MRCOOL® Universal Series 3 Ton 36,000 BTU 18 SEER2 Central Heat Pump Inverter Split System - R-454B - Multi-position
Introducing the New & Improved MRCOOL® Universal® Split System
Say hello to the all-new MRCOOL® Universal® Split System—a smarter way to heat and cool your home. With an efficiency rating of 18 SEER2, this system helps lower your energy costs without sacrificing performance.
Designed for year-round comfort, it delivers powerful cooling in the summer and reliable heating in the winter—all in one advanced, easy-to-install unit. The upgraded blower and innovative M-Coil work together to provide strong, consistent airflow and enhanced temperature control throughout your home
Why You'll Love It
Installer-Friendly: Quick-connect panels and No-Vac® Quick Connect® line set compatibility means faster installs and fewer callbacks
Flexible Power: Adaptive Multi-Voltage - 115V OR 208/230V, one product fits multiple job sites.
Highly Efficiency: ENERGY STAR Most Efficient 2025, SEER2 up to 18 & HSPF2 up to 10.
Smart Ready: Works seamlessly with the smart thermostat you already own.
Five Sizes, Endless Possibilities
Available in 2, 2.5, 3, 4, and 5 Ton configurations, the Universal® can scale to meet the demands of homes up to 3,000 square feet (1,500 - 1,800 Sq Ft for the 3 Ton Model) - giving you the flexibility to meet the needs of your home or business across a wide range of projects.
Operating Range:
Cooling: -22℉ ~ 122℉
Heating: -22℉ ~75℉
100% heat output at -13℉
Chassis heater and crankcase heater equipped as standard
1x MRCOOL® Universal Series UHP18036-O 3 Ton 36,000 BTU Heat Pump Inverter Condenser - R-454B
The MRCOOL® Universal® Series 36K DC Inverter Heat Pump Condenser is designed to deliver dependable, high-efficiency heating and cooling—even in the most extreme weather conditions. Whether you're facing sweltering summer heat or freezing winter temperatures, this unit ensures steady, year-round comfort. With an impressive 18 SEER2 efficiency rating, it offers substantial energy savings without compromising performance, making it an ideal replacement for outdated, energy-hungry systems. Engineered for flexibility and convenience, the 36K Universal® condenser features a compact footprint that allows for installation in space-constrained areas. Its smaller size makes it an excellent fit for homes with limited outdoor clearance while still delivering powerful, whole-home comfort. Installation is quick and hassle-free—especially when paired with the optional MRCOOL® NO-VAC® Quick Connect® line set (sold separately). This innovative, pre-charged line set eliminates the need for traditional vacuuming, flaring, or refrigerant handling, reducing installation time, labor costs, and complexity. At the heart of the system is advanced DC inverter technology, which allows the compressor to continuously modulate output based on your home’s real-time temperature demands. Unlike traditional systems that cycle on and off, this inverter-driven condenser maintains more consistent temperatures, reduces power consumption, minimizes component wear, and keeps noise levels to a minimum. Whether you're upgrading an aging system or installing a new HVAC solution, the MRCOOL® Universal® Series 36K Heat Pump Condenser offers a winning combination of efficiency, performance, and quiet operation. To ensure long-lasting confidence, it’s backed by a 10-year parts warranty and a 2-year limited labor warranty.
1x MRCOOL® Universal Series UAH18036-O 3 Ton 36,000 BTU Air Handler - R-454B - Multi-Position
The MRCOOL® Universal® Series 36K Air Handler offers a high-efficiency, performance-driven solution for year-round indoor comfort. Designed to meet the needs of modern homeowners, it’s the perfect upgrade for those looking to reduce energy costs without sacrificing heating and cooling performance. Built for flexibility, the air handler features a multi-position design that allows for vertical, horizontal, or downflow installation. This makes it adaptable to a wide range of home layouts and ideal for tight or limited spaces. Its compact footprint simplifies placement, while compatibility with the MRCOOL® NO-VAC® Quick Connect® line set (sold separately) makes installation even easier. This innovative line set comes pre-charged and sealed, eliminating the need for vacuuming, flaring, or handling refrigerant—saving both time and installation cost. For enhanced functionality, the air handler supports optional Universal® Series Heat Kits, which can boost heating capacity during cold weather or serve as emergency backup heat during unexpected temperature drops. Inside, the system features an advanced M-shaped evaporator coil that increases the surface area for better heat exchange, improved airflow, and higher energy efficiency. Quiet operation ensures it blends seamlessly into your home environment, producing sound levels comparable to everyday conversation or a running dishwasher. The coil is constructed from 100% aluminum for superior corrosion resistance and long-term durability. Backed by a 10-year parts warranty and a 2-year limited labor warranty, the MRCOOL® Universal® 36K Air Handler delivers reliable performance and peace of mind.
MRCOOL® Universal Series UHP18036-O 3 Ton 36,000 BTU Heat Pump Inverter Condenser - R-454B Specifications:
BRAND NAME
MRCOOL
SERIES
Universal R-454B
MODEL
UHP18036-O
GTIN
00840255587891
UPC
840255587891
UNIT TYPE
Universal Series Heat Pump
SHORT DESCRIPTION
Universal Series Heat Pump Inverter Condenser
LONG DESCRIPTION
The MRCOOL® Universal® Series 36K DC Inverter Heat Pump Condenser is designed to deliver dependable, high-efficiency heating and cooling—even in the most extreme weather conditions. Whether you're facing sweltering summer heat or freezing winter temperatures, this unit ensures steady, year-round comfort. With an impressive 18 SEER2 efficiency rating, it offers substantial energy savings without compromising performance, making it an ideal replacement for outdated, energy-hungry systems. Engineered for flexibility and convenience, the 36K Universal® condenser features a compact footprint that allows for installation in space-constrained areas. Its smaller size makes it an excellent fit for homes with limited outdoor clearance while still delivering powerful, whole-home comfort. Installation is quick and hassle-free—especially when paired with the optional MRCOOL® NO-VAC® Quick Connect® line set (sold separately). This innovative, pre-charged line set eliminates the need for traditional vacuuming, flaring, or refrigerant handling, reducing installation time, labor costs, and complexity. At the heart of the system is advanced DC inverter technology, which allows the compressor to continuously modulate output based on your home’s real-time temperature demands. Unlike traditional systems that cycle on and off, this inverter-driven condenser maintains more consistent temperatures, reduces power consumption, minimizes component wear, and keeps noise levels to a minimum. Whether you're upgrading an aging system or installing a new HVAC solution, the MRCOOL® Universal® Series 36K Heat Pump Condenser offers a winning combination of efficiency, performance, and quiet operation. To ensure long-lasting confidence, it’s backed by a 10-year parts warranty and a 2-year limited labor warranty.
MRCOOL® Universal Series UAH18036-O 3 Ton 36,000 BTU Air Handler - R-454B - Multi-Position Specifications:
BRAND NAME
MRCOOL
SERIES
Universal R-454B
MODEL
UAH18036-O
GTIN
00840255587846
UPC
840255587846
UNIT TYPE
Universal Series Air Handler
SHORT DESCRIPTION
Universal Series 36,000 BTU Air Handler
LONG DESCRIPTION
The MRCOOL® Universal® Series 36K Air Handler offers a high-efficiency, performance-driven solution for year-round indoor comfort. Designed to meet the needs of modern homeowners, it’s the perfect upgrade for those looking to reduce energy costs without sacrificing heating and cooling performance. Built for flexibility, the air handler features a multi-position design that allows for vertical, horizontal, or downflow installation. This makes it adaptable to a wide range of home layouts and ideal for tight or limited spaces. Its compact footprint simplifies placement, while compatibility with the MRCOOL® NO-VAC® Quick Connect® line set (sold separately) makes installation even easier. This innovative line set comes pre-charged and sealed, eliminating the need for vacuuming, flaring, or handling refrigerant—saving both time and installation cost. For enhanced functionality, the air handler supports optional Universal® Series Heat Kits, which can boost heating capacity during cold weather or serve as emergency backup heat during unexpected temperature drops. Inside, the system features an advanced M-shaped evaporator coil that increases the surface area for better heat exchange, improved airflow, and higher energy efficiency. Quiet operation ensures it blends seamlessly into your home environment, producing sound levels comparable to everyday conversation or a running dishwasher. The coil is constructed from 100% aluminum for superior corrosion resistance and long-term durability. Backed by a 10-year parts warranty and a 2-year limited labor warranty, the MRCOOL® Universal® 36K Air Handler delivers reliable performance and peace of mind.
Thank you for visiting and shopping at Mini Split Systems Direct. Following are the terms and conditions that constitute our Shipping Policy.
Domestic Shipping Policy
Shipment processing time
All orders made before 2:00 PM EST are processed within 2-3 business days. Items ordered on weekends (Saturday or Sunday) start to process and ship as early as the following business day.
If we are experiencing a high volume of orders, shipments may be delayed by a few days. Please allow additional days in transit for delivery. If there will be a significant delay in shipment of your order, we will contact you via email or telephone.
Shipping rates & delivery estimates
We offer standard free shipping via UPS Ground, FedEx Ground, and Freight for all orders in the United States. We do not currently ship to international locations.
Destination
Shipping method
Processing Time
Estimated Delivery Time
Shipment cost
United States
Free Shipping
2 - 3 business days
3 - 7 days
Free
Delivery delays can occasionally occur.
Shipment confirmation & Order tracking
You will receive a Shipment Confirmation email once your order has shipped containing your tracking number(s). The tracking number will be active within 24 hours.
Customs, Duties and Taxes
Mini Split Systems Direct is not responsible for any customs and taxes applied to your order. All fees imposed during or after shipping are the responsibility of the customer (tariffs, taxes, etc.).
Damages & Missing Items
Please inspect all packages for damaged or missing items before accepting your shipment. If any of the items are missing or appear to have any type of damage; Mark the Receipt Damaged and/or missing (write which items are missing, or damaged and describe the damage).
Only refuse the items that are damaged, keep and sign for the items that are in good condition and be sure to notate the items that are being refused for damages clearly on the delivery receipt. You must contact our Customer Service Department at info@minisplitsystemsdirect.com to report which product(s) were missing and/or refused for damages and which product(s) were accepted at the time of delivery. After our Shipping Department receives confirmation from the Freight LTL Company we will promptly ship out the replacement product(s) to you.
Although Mini Split Systems Direct is NOT responsible for shipping damage, if your item(s) do arrive damaged, please send photos to info@minisplitsystemsdirect.com and we can assist with filing a claim against the shipping carrier to cover the cost of damages.
Any damages or missing items have to be noted on the delivery receipt prior to signing for and accepting your shipment in order to file a claim. Do not let the delivery driver rush you. It is your right to inspect each and every item.
Pre-Orders, Backorders, and Out-of-Stock Items:
Mini Split Systems Direct is dedicated to sourcing any item you may need and getting it to you as quickly as possible. Any items that are out of stock, or available for Pre-Order will be noted on the product page. You are welcome to place an order for Pre-Order items, backorder items, and for items that are out of stock, and will ship them the second they become available from the manufacturer, ensuring you get the item before anyone else. If you have questions about lead times, please refer to the product page or contact us at info@minisplitsystemsdirect.com or give a call or text at 1-800-315-4345
Returns
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused and in its original packaging.
All returns are subjectto a 15% restocking fee, and the purchaser is responsible for the cost of return shipping.
To start a return, you can contact us atinfo@minisplitsystemsdirect.com or call us at 1-800-315-4345. If your return is accepted, we will either schedule a pickup or send you a return shipping label, as well as instructions on how and where to send your package. Items sent back without first requesting a return will not be accepted.
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method.A 15% restocking fee and the cost of return shipping will be deducted from the refund. Please allow up to 10 business days for your bank or credit card company to process and post the refund to your account. If you have any questions regarding your refund, please contact us at info@minisplitsystemsdirect.com or call us at 1-800-315-4345.
Cancellations
All orders canceled after 24 hours are subject to a 5% administration fee,If your order has not been shipped yet, this is the only fee you will incur. This is a fee that covers administrative and personnel fees.
If your order has been shipped, you will not be charged a 5% administration fee, the standard return procedures will apply and youwill be responsible for the cost of return shipping, and a 15% restocking fee will be ducted from your refund. Refunds will only be issued to the original payment methodthat you used when placing your order.
Damages and issues
Please inspect all packages for damaged or missing items before accepting your shipment. If any of the items are missing or appear to have any type of damage; Mark the Receipt Damaged and/or missing (write which items are missing, or damaged and describe the damage).
Only refuse the items that are damaged, keep and sign for the items that are in good condition and be sure to notate the items that are being refused for damages clearly on the delivery receipt. You must contact our Customer Service Department at info@minisplitsystemsdirect.comto report which product(s) were missing and/or refused for damages and which product(s) were accepted at the time of delivery. After our Shipping Department receives confirmation from the Freight LTL Company we will promptly ship out the replacement product(s) to you.
Although Mini Split Systems Direct is NOT responsible for shipping damage, if your item(s) do arrive damaged, please send photos to info@minisplitsystemsdirect.comand we can assist with filing a claim against the shipping carrier to cover the cost of damages.
Any damages or missing items have to be noted on the delivery receipt prior to signing for and accepting your shipment in order to file a claim. Do not let the delivery driver rush you. It is your right to inspect each and every item.
Exchanges
The fastest way to ensure you get what you want is to return the item you have (see return process above), and once the return is accepted, make a separate purchase for the new item.
Our goal is to consistently provide the best pricing in the marketplace online and we work very diligently to do so. If you happen to see another online shop that offers a lower price than us within six months of your date please let us know and we’ll be happy to refund the difference on your original payment method. Moreover, because we are consistently working with our suppliers to get better rates we know that you can feel very comfortable and confident that you are seeing the best prices that can be provided for the products listed on our site.
Moving forward if you find the same item that we carry on another website that has a lower price please submit that to us within six months of your purchase date and we will refund you the difference.
If it is a case of seeing a lower price on another website and we need to send a partial refund simply email us the link to the exact product and brand from our site and also the link from our competitors site so we can inspect the pricing. Again this needs to be within six months from the date of your order and we will review your submission and apply a credit if necessary.
Our Price Match Policy has some limitations:
The item must have already been purchased from our site prior to asking for this to be reviewed and submitted.
This does not include rebate programs or specific retailer programs such as buy three get one free type offers or any combination such as that are not eligible.
The item will need to be in stock from the competitors site that you’re submitting the information from.
The competitor must be an online store, they may not have a retail location, warehouse, showroom, or physical location.
The website cannot be a wholesaler, liquidator, distributor, or auction website. Examples are eBay, Liquadation.com, Via Trading, Overstock, Wayfair, Amazon, Home Depot, Lowes, etc.
The competitor must also be someone who has been authorized by the supplier and/or manufacturer to resell the product you are inquiring about.
The price match will include the product listing price, but will exclude any sales tax.
Can I add a discount code to my order post-purchase?
Unfortunately were unable to add a discount code to your order after you've checked out, but, were happy to provide you with discount for your next purchase.
Can I add items to my order?
Yes, please contact us a soon as possible if you need to make changes to your order and will send an invoice for the remaining amount due. Please note this may result in you receiving your order in multiple packages, and yes, you will receive a tracking number for each package.
Can I change or modify my order?
Yes, you can change or modify your order within the first 24 hours after placing your order, after that, it will depend on the status of your order. If you need to change or modify your order, please contact us as soon as possible at info@minisplitsystemsdirect.com. If your order has already been processed and shipped, then we may be unable to change or modify your order.
Can I place my order to be delivered outside the United States?
At this time we do not ship internationally, but please contact us we may be able to accommodate you.
How can I remove items from my order?
If you need to remove items from your order, please contact us at info@minisplitsystemsdirect.com within the first 24 hours after you placed your order. After 24 hours, you are subject to a 5% fee for the item that is cancelled to cover incurred credit card processing fees. If your order has not been shipped yet, this is the only fee you will incur.
If your order has been shipped, you will not be charged a 5% administration fee, the standard return procedures will apply and you will be responsible for the cost of return shipping, and a 15% restocking fee will be ducted from your refund. Refunds will only be issued to the original payment method that you used when placing your order. For more information, please see our return & refund policy here.
Do all the products you carry come with a warranty?
Yes, every product we carry includes a manufacturer warranty. If you need help with a warranty claim, please contact us at info@minisplitsystemsdirect.com and will help you resolve any issues you are experiencing with your product.
Do you have a storefront?
At this time we do not have a storefront, we're an online only Authorized Dealer for all the brand we carry. We do have plans to open a storefront in the future.
How do I check the status of my order?
After placing your order you'll receive a confirmation email, and after a Shipment Confirmation email once your order has shipped which will contain your tracking number(s). The tracking number will be active within 24 hours. If you have any other questions regarding the status of your order please contact us at info@minisplitsystemsdirect.com or message us by live chat.
How long is shipping and delivery?
All orders made before 2:00 PM EST are processed within 2 - 3 business days. Items ordered on weekends (Saturday or Sunday) start to process and ship as early as the following business day. Estimated delivery time is 3 - 7 days.
If we are experiencing a high volume of orders, shipments may be delayed by a few days. Please allow additional days in transit for delivery. If there will be a significant delay in shipment of your order, we will contact you via email or telephone.
Who do you ship with?
We offer standard free shipping via UPS Ground, FedEx Ground, and Freight for all orders in the United States.
How long will it take to receive my refund?
Please allow up to 10 business days for your bank or credit card company to process and post the refund to your account. If you have any questions regarding your refund, please contact us at info@minisplitsystemsdirect.com or call us at 1-800-315-4345.
What is your return policy?
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused and in its original packaging.
All returns are subjectto a 15% restocking fee, and the purchaser is responsible for the cost of return shipping.
To start a return, you can contact us atinfo@minisplitsystemsdirect.com or call us at 1-800-315-4345. If your return is accepted, we will either schedule a pickup or send you a return shipping label, as well as instructions on how and where to send your package. Items sent back without first requesting a return will not be accepted. Please see our full return & refund policy here.
What forms of payment do you accept?
We accept all credit cards, PayPal, Apple Pay, and you can pay in installments with Sezzle at checkout.
What should I do if my order is damaged or I'm missing items?
Please contact us within 48 hours of receiving your order at info@minisplitsystemsdirect.com and we'll resolve the issue ASAP.
What should I do if my order was marked as delivered but I haven't received it?
Although we cannot control what happens once your order leaves the warehouse and is in the hands of the shipping carrier, we will do everything we can to make sure you receive your order. If you have not received your order, please contact us at info@minisplitsystemsdirect.com with your order number, and provide us with any details that may help and rest assured, we will resolve the issue.
I’m having trouble tracking my order. What should I do?
If your order has just been shipped, please wait 24 hours for your tracking number to be updated properly with your latest tracking information. If after 24 hours your tracking information is not populating, please contact us at info@minisplitsystemsdirect.com and we will be more than happy to assist you.
Description
MRCOOL® Universal Series 3 Ton 36,000 BTU 18 SEER2 Central Heat Pump Inverter Split System - R-454B - Multi-position
Introducing the New & Improved MRCOOL® Universal® Split System
Say hello to the all-new MRCOOL® Universal® Split System—a smarter way to heat and cool your home. With an efficiency rating of 18 SEER2, this system helps lower your energy costs without sacrificing performance.
Designed for year-round comfort, it delivers powerful cooling in the summer and reliable heating in the winter—all in one advanced, easy-to-install unit. The upgraded blower and innovative M-Coil work together to provide strong, consistent airflow and enhanced temperature control throughout your home
Why You'll Love It
Installer-Friendly: Quick-connect panels and No-Vac® Quick Connect® line set compatibility means faster installs and fewer callbacks
Flexible Power: Adaptive Multi-Voltage - 115V OR 208/230V, one product fits multiple job sites.
Highly Efficiency: ENERGY STAR Most Efficient 2025, SEER2 up to 18 & HSPF2 up to 10.
Smart Ready: Works seamlessly with the smart thermostat you already own.
Five Sizes, Endless Possibilities
Available in 2, 2.5, 3, 4, and 5 Ton configurations, the Universal® can scale to meet the demands of homes up to 3,000 square feet (1,500 - 1,800 Sq Ft for the 3 Ton Model) - giving you the flexibility to meet the needs of your home or business across a wide range of projects.
Operating Range:
Cooling: -22℉ ~ 122℉
Heating: -22℉ ~75℉
100% heat output at -13℉
Chassis heater and crankcase heater equipped as standard
1x MRCOOL® Universal Series UHP18036-O 3 Ton 36,000 BTU Heat Pump Inverter Condenser - R-454B
The MRCOOL® Universal® Series 36K DC Inverter Heat Pump Condenser is designed to deliver dependable, high-efficiency heating and cooling—even in the most extreme weather conditions. Whether you're facing sweltering summer heat or freezing winter temperatures, this unit ensures steady, year-round comfort. With an impressive 18 SEER2 efficiency rating, it offers substantial energy savings without compromising performance, making it an ideal replacement for outdated, energy-hungry systems. Engineered for flexibility and convenience, the 36K Universal® condenser features a compact footprint that allows for installation in space-constrained areas. Its smaller size makes it an excellent fit for homes with limited outdoor clearance while still delivering powerful, whole-home comfort. Installation is quick and hassle-free—especially when paired with the optional MRCOOL® NO-VAC® Quick Connect® line set (sold separately). This innovative, pre-charged line set eliminates the need for traditional vacuuming, flaring, or refrigerant handling, reducing installation time, labor costs, and complexity. At the heart of the system is advanced DC inverter technology, which allows the compressor to continuously modulate output based on your home’s real-time temperature demands. Unlike traditional systems that cycle on and off, this inverter-driven condenser maintains more consistent temperatures, reduces power consumption, minimizes component wear, and keeps noise levels to a minimum. Whether you're upgrading an aging system or installing a new HVAC solution, the MRCOOL® Universal® Series 36K Heat Pump Condenser offers a winning combination of efficiency, performance, and quiet operation. To ensure long-lasting confidence, it’s backed by a 10-year parts warranty and a 2-year limited labor warranty.
1x MRCOOL® Universal Series UAH18036-O 3 Ton 36,000 BTU Air Handler - R-454B - Multi-Position
The MRCOOL® Universal® Series 36K Air Handler offers a high-efficiency, performance-driven solution for year-round indoor comfort. Designed to meet the needs of modern homeowners, it’s the perfect upgrade for those looking to reduce energy costs without sacrificing heating and cooling performance. Built for flexibility, the air handler features a multi-position design that allows for vertical, horizontal, or downflow installation. This makes it adaptable to a wide range of home layouts and ideal for tight or limited spaces. Its compact footprint simplifies placement, while compatibility with the MRCOOL® NO-VAC® Quick Connect® line set (sold separately) makes installation even easier. This innovative line set comes pre-charged and sealed, eliminating the need for vacuuming, flaring, or handling refrigerant—saving both time and installation cost. For enhanced functionality, the air handler supports optional Universal® Series Heat Kits, which can boost heating capacity during cold weather or serve as emergency backup heat during unexpected temperature drops. Inside, the system features an advanced M-shaped evaporator coil that increases the surface area for better heat exchange, improved airflow, and higher energy efficiency. Quiet operation ensures it blends seamlessly into your home environment, producing sound levels comparable to everyday conversation or a running dishwasher. The coil is constructed from 100% aluminum for superior corrosion resistance and long-term durability. Backed by a 10-year parts warranty and a 2-year limited labor warranty, the MRCOOL® Universal® 36K Air Handler delivers reliable performance and peace of mind.
MRCOOL® Universal Series UHP18036-O 3 Ton 36,000 BTU Heat Pump Inverter Condenser - R-454B Specifications:
BRAND NAME
MRCOOL
SERIES
Universal R-454B
MODEL
UHP18036-O
GTIN
00840255587891
UPC
840255587891
UNIT TYPE
Universal Series Heat Pump
SHORT DESCRIPTION
Universal Series Heat Pump Inverter Condenser
LONG DESCRIPTION
The MRCOOL® Universal® Series 36K DC Inverter Heat Pump Condenser is designed to deliver dependable, high-efficiency heating and cooling—even in the most extreme weather conditions. Whether you're facing sweltering summer heat or freezing winter temperatures, this unit ensures steady, year-round comfort. With an impressive 18 SEER2 efficiency rating, it offers substantial energy savings without compromising performance, making it an ideal replacement for outdated, energy-hungry systems. Engineered for flexibility and convenience, the 36K Universal® condenser features a compact footprint that allows for installation in space-constrained areas. Its smaller size makes it an excellent fit for homes with limited outdoor clearance while still delivering powerful, whole-home comfort. Installation is quick and hassle-free—especially when paired with the optional MRCOOL® NO-VAC® Quick Connect® line set (sold separately). This innovative, pre-charged line set eliminates the need for traditional vacuuming, flaring, or refrigerant handling, reducing installation time, labor costs, and complexity. At the heart of the system is advanced DC inverter technology, which allows the compressor to continuously modulate output based on your home’s real-time temperature demands. Unlike traditional systems that cycle on and off, this inverter-driven condenser maintains more consistent temperatures, reduces power consumption, minimizes component wear, and keeps noise levels to a minimum. Whether you're upgrading an aging system or installing a new HVAC solution, the MRCOOL® Universal® Series 36K Heat Pump Condenser offers a winning combination of efficiency, performance, and quiet operation. To ensure long-lasting confidence, it’s backed by a 10-year parts warranty and a 2-year limited labor warranty.
MRCOOL® Universal Series UAH18036-O 3 Ton 36,000 BTU Air Handler - R-454B - Multi-Position Specifications:
BRAND NAME
MRCOOL
SERIES
Universal R-454B
MODEL
UAH18036-O
GTIN
00840255587846
UPC
840255587846
UNIT TYPE
Universal Series Air Handler
SHORT DESCRIPTION
Universal Series 36,000 BTU Air Handler
LONG DESCRIPTION
The MRCOOL® Universal® Series 36K Air Handler offers a high-efficiency, performance-driven solution for year-round indoor comfort. Designed to meet the needs of modern homeowners, it’s the perfect upgrade for those looking to reduce energy costs without sacrificing heating and cooling performance. Built for flexibility, the air handler features a multi-position design that allows for vertical, horizontal, or downflow installation. This makes it adaptable to a wide range of home layouts and ideal for tight or limited spaces. Its compact footprint simplifies placement, while compatibility with the MRCOOL® NO-VAC® Quick Connect® line set (sold separately) makes installation even easier. This innovative line set comes pre-charged and sealed, eliminating the need for vacuuming, flaring, or handling refrigerant—saving both time and installation cost. For enhanced functionality, the air handler supports optional Universal® Series Heat Kits, which can boost heating capacity during cold weather or serve as emergency backup heat during unexpected temperature drops. Inside, the system features an advanced M-shaped evaporator coil that increases the surface area for better heat exchange, improved airflow, and higher energy efficiency. Quiet operation ensures it blends seamlessly into your home environment, producing sound levels comparable to everyday conversation or a running dishwasher. The coil is constructed from 100% aluminum for superior corrosion resistance and long-term durability. Backed by a 10-year parts warranty and a 2-year limited labor warranty, the MRCOOL® Universal® 36K Air Handler delivers reliable performance and peace of mind.
Thank you for visiting and shopping at Mini Split Systems Direct. Following are the terms and conditions that constitute our Shipping Policy.
Domestic Shipping Policy
Shipment processing time
All orders made before 2:00 PM EST are processed within 2-3 business days. Items ordered on weekends (Saturday or Sunday) start to process and ship as early as the following business day.
If we are experiencing a high volume of orders, shipments may be delayed by a few days. Please allow additional days in transit for delivery. If there will be a significant delay in shipment of your order, we will contact you via email or telephone.
Shipping rates & delivery estimates
We offer standard free shipping via UPS Ground, FedEx Ground, and Freight for all orders in the United States. We do not currently ship to international locations.
Destination
Shipping method
Processing Time
Estimated Delivery Time
Shipment cost
United States
Free Shipping
2 - 3 business days
3 - 7 days
Free
Delivery delays can occasionally occur.
Shipment confirmation & Order tracking
You will receive a Shipment Confirmation email once your order has shipped containing your tracking number(s). The tracking number will be active within 24 hours.
Customs, Duties and Taxes
Mini Split Systems Direct is not responsible for any customs and taxes applied to your order. All fees imposed during or after shipping are the responsibility of the customer (tariffs, taxes, etc.).
Damages & Missing Items
Please inspect all packages for damaged or missing items before accepting your shipment. If any of the items are missing or appear to have any type of damage; Mark the Receipt Damaged and/or missing (write which items are missing, or damaged and describe the damage).
Only refuse the items that are damaged, keep and sign for the items that are in good condition and be sure to notate the items that are being refused for damages clearly on the delivery receipt. You must contact our Customer Service Department at info@minisplitsystemsdirect.com to report which product(s) were missing and/or refused for damages and which product(s) were accepted at the time of delivery. After our Shipping Department receives confirmation from the Freight LTL Company we will promptly ship out the replacement product(s) to you.
Although Mini Split Systems Direct is NOT responsible for shipping damage, if your item(s) do arrive damaged, please send photos to info@minisplitsystemsdirect.com and we can assist with filing a claim against the shipping carrier to cover the cost of damages.
Any damages or missing items have to be noted on the delivery receipt prior to signing for and accepting your shipment in order to file a claim. Do not let the delivery driver rush you. It is your right to inspect each and every item.
Pre-Orders, Backorders, and Out-of-Stock Items:
Mini Split Systems Direct is dedicated to sourcing any item you may need and getting it to you as quickly as possible. Any items that are out of stock, or available for Pre-Order will be noted on the product page. You are welcome to place an order for Pre-Order items, backorder items, and for items that are out of stock, and will ship them the second they become available from the manufacturer, ensuring you get the item before anyone else. If you have questions about lead times, please refer to the product page or contact us at info@minisplitsystemsdirect.com or give a call or text at 1-800-315-4345
Return and Refund Policy
Returns
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused and in its original packaging.
All returns are subjectto a 15% restocking fee, and the purchaser is responsible for the cost of return shipping.
To start a return, you can contact us atinfo@minisplitsystemsdirect.com or call us at 1-800-315-4345. If your return is accepted, we will either schedule a pickup or send you a return shipping label, as well as instructions on how and where to send your package. Items sent back without first requesting a return will not be accepted.
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method.A 15% restocking fee and the cost of return shipping will be deducted from the refund. Please allow up to 10 business days for your bank or credit card company to process and post the refund to your account. If you have any questions regarding your refund, please contact us at info@minisplitsystemsdirect.com or call us at 1-800-315-4345.
Cancellations
All orders canceled after 24 hours are subject to a 5% administration fee,If your order has not been shipped yet, this is the only fee you will incur. This is a fee that covers administrative and personnel fees.
If your order has been shipped, you will not be charged a 5% administration fee, the standard return procedures will apply and youwill be responsible for the cost of return shipping, and a 15% restocking fee will be ducted from your refund. Refunds will only be issued to the original payment methodthat you used when placing your order.
Damages and issues
Please inspect all packages for damaged or missing items before accepting your shipment. If any of the items are missing or appear to have any type of damage; Mark the Receipt Damaged and/or missing (write which items are missing, or damaged and describe the damage).
Only refuse the items that are damaged, keep and sign for the items that are in good condition and be sure to notate the items that are being refused for damages clearly on the delivery receipt. You must contact our Customer Service Department at info@minisplitsystemsdirect.comto report which product(s) were missing and/or refused for damages and which product(s) were accepted at the time of delivery. After our Shipping Department receives confirmation from the Freight LTL Company we will promptly ship out the replacement product(s) to you.
Although Mini Split Systems Direct is NOT responsible for shipping damage, if your item(s) do arrive damaged, please send photos to info@minisplitsystemsdirect.comand we can assist with filing a claim against the shipping carrier to cover the cost of damages.
Any damages or missing items have to be noted on the delivery receipt prior to signing for and accepting your shipment in order to file a claim. Do not let the delivery driver rush you. It is your right to inspect each and every item.
Exchanges
The fastest way to ensure you get what you want is to return the item you have (see return process above), and once the return is accepted, make a separate purchase for the new item.
Price Match Policy
Our goal is to consistently provide the best pricing in the marketplace online and we work very diligently to do so. If you happen to see another online shop that offers a lower price than us within six months of your date please let us know and we’ll be happy to refund the difference on your original payment method. Moreover, because we are consistently working with our suppliers to get better rates we know that you can feel very comfortable and confident that you are seeing the best prices that can be provided for the products listed on our site.
Moving forward if you find the same item that we carry on another website that has a lower price please submit that to us within six months of your purchase date and we will refund you the difference.
If it is a case of seeing a lower price on another website and we need to send a partial refund simply email us the link to the exact product and brand from our site and also the link from our competitors site so we can inspect the pricing. Again this needs to be within six months from the date of your order and we will review your submission and apply a credit if necessary.
Our Price Match Policy has some limitations:
The item must have already been purchased from our site prior to asking for this to be reviewed and submitted.
This does not include rebate programs or specific retailer programs such as buy three get one free type offers or any combination such as that are not eligible.
The item will need to be in stock from the competitors site that you’re submitting the information from.
The competitor must be an online store, they may not have a retail location, warehouse, showroom, or physical location.
The website cannot be a wholesaler, liquidator, distributor, or auction website. Examples are eBay, Liquadation.com, Via Trading, Overstock, Wayfair, Amazon, Home Depot, Lowes, etc.
The competitor must also be someone who has been authorized by the supplier and/or manufacturer to resell the product you are inquiring about.
The price match will include the product listing price, but will exclude any sales tax.
FAQ
Can I add a discount code to my order post-purchase?
Unfortunately were unable to add a discount code to your order after you've checked out, but, were happy to provide you with discount for your next purchase.
Can I add items to my order?
Yes, please contact us a soon as possible if you need to make changes to your order and will send an invoice for the remaining amount due. Please note this may result in you receiving your order in multiple packages, and yes, you will receive a tracking number for each package.
Can I change or modify my order?
Yes, you can change or modify your order within the first 24 hours after placing your order, after that, it will depend on the status of your order. If you need to change or modify your order, please contact us as soon as possible at info@minisplitsystemsdirect.com. If your order has already been processed and shipped, then we may be unable to change or modify your order.
Can I place my order to be delivered outside the United States?
At this time we do not ship internationally, but please contact us we may be able to accommodate you.
How can I remove items from my order?
If you need to remove items from your order, please contact us at info@minisplitsystemsdirect.com within the first 24 hours after you placed your order. After 24 hours, you are subject to a 5% fee for the item that is cancelled to cover incurred credit card processing fees. If your order has not been shipped yet, this is the only fee you will incur.
If your order has been shipped, you will not be charged a 5% administration fee, the standard return procedures will apply and you will be responsible for the cost of return shipping, and a 15% restocking fee will be ducted from your refund. Refunds will only be issued to the original payment method that you used when placing your order. For more information, please see our return & refund policy here.
Do all the products you carry come with a warranty?
Yes, every product we carry includes a manufacturer warranty. If you need help with a warranty claim, please contact us at info@minisplitsystemsdirect.com and will help you resolve any issues you are experiencing with your product.
Do you have a storefront?
At this time we do not have a storefront, we're an online only Authorized Dealer for all the brand we carry. We do have plans to open a storefront in the future.
How do I check the status of my order?
After placing your order you'll receive a confirmation email, and after a Shipment Confirmation email once your order has shipped which will contain your tracking number(s). The tracking number will be active within 24 hours. If you have any other questions regarding the status of your order please contact us at info@minisplitsystemsdirect.com or message us by live chat.
How long is shipping and delivery?
All orders made before 2:00 PM EST are processed within 2 - 3 business days. Items ordered on weekends (Saturday or Sunday) start to process and ship as early as the following business day. Estimated delivery time is 3 - 7 days.
If we are experiencing a high volume of orders, shipments may be delayed by a few days. Please allow additional days in transit for delivery. If there will be a significant delay in shipment of your order, we will contact you via email or telephone.
Who do you ship with?
We offer standard free shipping via UPS Ground, FedEx Ground, and Freight for all orders in the United States.
How long will it take to receive my refund?
Please allow up to 10 business days for your bank or credit card company to process and post the refund to your account. If you have any questions regarding your refund, please contact us at info@minisplitsystemsdirect.com or call us at 1-800-315-4345.
What is your return policy?
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused and in its original packaging.
All returns are subjectto a 15% restocking fee, and the purchaser is responsible for the cost of return shipping.
To start a return, you can contact us atinfo@minisplitsystemsdirect.com or call us at 1-800-315-4345. If your return is accepted, we will either schedule a pickup or send you a return shipping label, as well as instructions on how and where to send your package. Items sent back without first requesting a return will not be accepted. Please see our full return & refund policy here.
What forms of payment do you accept?
We accept all credit cards, PayPal, Apple Pay, and you can pay in installments with Sezzle at checkout.
What should I do if my order is damaged or I'm missing items?
Please contact us within 48 hours of receiving your order at info@minisplitsystemsdirect.com and we'll resolve the issue ASAP.
What should I do if my order was marked as delivered but I haven't received it?
Although we cannot control what happens once your order leaves the warehouse and is in the hands of the shipping carrier, we will do everything we can to make sure you receive your order. If you have not received your order, please contact us at info@minisplitsystemsdirect.com with your order number, and provide us with any details that may help and rest assured, we will resolve the issue.
I’m having trouble tracking my order. What should I do?
If your order has just been shipped, please wait 24 hours for your tracking number to be updated properly with your latest tracking information. If after 24 hours your tracking information is not populating, please contact us at info@minisplitsystemsdirect.com and we will be more than happy to assist you.
So far so good, from first contact to home delivery, this system comes with a great warranty to
Very helpful, and super fast shipping! Haven’t installed the unit yet but from what I’ve experienced so far I’m sure Mini Split Systems Direct will assist if needed.
E
Everett
Good Value
Fast shipping. This is one very nice modern central A/C unit, which upgraded my home comfort. This is the best price on the internet. Great communication. Overall, very happy I purchased this unit from these guys. Shipped out fast, and arrived as promised. Great company
M
Matt - Electrician
This unit is running less than half as much as...
I bought this because an HVAC tech friend of mine suggested it. He’s the best tech I’ve ever worked around. This unit is running less than half as much as my second unit and it is set at a lower temperature, which means less running up my electricity bill. This seems to be a great choice. I can’t wait to replace my other unit.
A
Antonio
Excellent DIY System
Bought this to replace an old furnace and A/C unit. I self installed everything; it wasn't all that hard. As I type this, here in GA it is 9 degrees, a temperature I've only seen one other time locally in my entire life. The unit is working perfectly and my entire home is comfy-cozy... save my old drafty windows. I was very skeptical at first and was very nervous about the extreme cold temps, however this system has performed brilliantly!
S
Savannah Branton
Cools, heats, great little unit!
Has worked great so far! Worked with our nest thermostat, pay attention to the wires for sure.
Very easy to install, and with a little trouble shooting with help from tech. it was very quietly putting out ice cold air... Had a bad fuse in my disconnect....
MRCOOL® DIY 5th Gen Multi-Zone 2-Zone 18,000 BTU 23.9 SEER2 (9K + 9K) Ductless Mini-Split Air Conditioner and Heat Pump
10/20/2025
Daniel Castillo
We have these in our apartment
This is a good air conditioner for the price. Our apartment living room and kitchen have been kept nice and cool. The complex we moved into actually already had these installed but I have been so happy with the performance I purchased one for my mom who lives in a tiny home, I'm an HVAC tech and it was about time to replace her HVAC. Yes, I recommend this.
Olimpia Splendid Maestro PRO Inverter 12 HP (12,000 BTUH – 115V - R32) Inverter Compressor & Variable Speed Motor, Wi-Fi Ready, Includes Condensate Base Pan Heater - Model 2452
08/10/2025
Nicole
Hotel cold at home 🤭
We have zero regrets! No wait, one. That we didn’t get them sooner! We (my husband, self and 19yr old son) work outside noon-8am several days a week in Texas. It doesn’t matter how low you set your AC unit it’s just never enough and it just runs it into the ground. We finally decided to pull the plug. In my 40 years I’ve never slept so good. It’s like hotel good but in your own bed!!! Install was super easy because I watched him do it, LOL. I kid. I’ll ask for his install input and update but seriously he installed all 4 (3 bedrooms and 1 living room) in 2 days. Probably wouldn’t have taken so long if he didn’t have to pour a pad for them but it was well worth it! Last pic is from the Nest. They were installed Friday. Compare usage from Sat & Sun to before we got them! Insane!!!
Della Umbra Series 12000 BTU SEER2 17 Mini-Split Heat Pump AC - Up to 550 Sq.Ft.
07/17/2025
Michael Estes
I love it
This was best investment I've ever made. I put this on the wall on my porch that I've converted to a sun room. This extra space that I enclosed with plexiglass and wood and sealed with insulation stayed about 20 degrees different from out side. With a window unit and heaters. Now with the split unit it stays what ever temp I want it to be. The della split unit is so quite I have to put my ear on it to hear it run sometimes the out side unit is even quite. If you mount on outside wall that is a little thin and only a few inches thick it might give a little bit of a hum but so slight you have to want to hear it. Turbo cool or heat will cool or heat super fast. The system is perfect 👌 👍 🥰. I love it.
Della Umbra Series 12000 BTU SEER2 17 Mini-Split Heat Pump AC - Up to 550 Sq.Ft.
07/17/2025
Vereak Say
WORKS GREAT IN THE FLORIDA HEAT!!
I live in Florida and our summers are brutal. I installed this in my garage.
It wasn’t a hard install but it took my dad and I about 8 hours. He ran the electrical.
Around this time of the year, my garage is around 82 degrees and +70% humidity, the air is very wet.
This morning it was 74” and 52% humidity.
The indoor and outdoor units are remarkably quieter compared to our house’s HVAC system.
Della Umbra Series 12000 BTU SEER2 17 Mini-Split Heat Pump AC - Up to 550 Sq.Ft.
07/17/2025
FrenchieofrobbinsNC
Just great! Extremely satisfied!
I bought and installed 2 of the della mini splits in the last 8 months, one for my double wide 1800 sqf that I am remodeling little by little, and another for my daughters craftsman home. What an improvement! So silent! So efficient! So easy of operating. For the last 10+ years, we have been using windows AC units and radiant heaters after our central heat and air system broke. The suffering is over. We are saving $100 a month on the power bill and enjoying ourselves inside now. Our Great Pyrenees friends are enjoying the AC's too during the scorching hot summer days. They are pretty easy to install. Follow the instructions on the book and watch some videos on YouTube. On the second install, I made an electrical mistake and purchased the wrong breaker. I am only a landscaper by the way. No problem! I called the technical support number and a very nice tech called me back after just a few hours and figured it out by phone within 5 minutes. It is all great! We just keep it simple by using the remotes. I love the delay timer option. Now that the weather is cooling down (80's max), I set the timer so it doesn't come ON automatically before 12 pm. By the time the girls come from school, 75°f is back as set. GREAT PRODUCT, GREAT TECHNICAL SUPPORT
DELLA Vario Series 36000 BTU Quad Zone Mini Split AC 9K+9K+9K+12K Up to 1750 Sq.Ft.
07/17/2025
Jim Cook
I can hang meat
Installation was a breeze. Unit is working flawlessly. I love that it connected to my Alexa and I can voice control or use the Della app. I am going to purchase a second Della for our guest home.
DELLA Vario Series 36000 BTU Quad Zone Mini Split AC 9K+9K+9K+12K Up to 1750 Sq.Ft.
07/17/2025
Louise
Good quality, so it is a little heavy for me
Got these panels for my backyard as the wall for the Composting area. Black is good for absorbing the heat of the sun and is easy to hide the ugly things. It is a good quality product. The foot support is stainless steel and long enough to bind the ground and the panels. As it is with a good quality, it is just a little heavy, which may require two people to move around or install it.
Costway Air Conditioner Fence 48-Inch Privacy Screen 2-Panel for Trash Can with Metal Stakes
06/19/2025
Charlie G.
Solid and easy. Good product
Solid plastic material. Assembly was easy with a power screwdriver. Looks better than an ugly air conditioner unit.
Costway Air Conditioner Fence 48-Inch Privacy Screen 2-Panel for Trash Can with Metal Stakes
06/19/2025
Anonymous
Nice air conditioner fences
Great value and just the right size. Note that if you want to place them in a straight line, you will need to use an electric screwdriver to tighten the screws.
Costway Air Conditioner Fence 48-Inch Privacy Screen 2-Panel for Trash Can with Metal Stakes
06/19/2025
Danny
High quality
Made from good quality materials. Very easy to install and assemble. Looks great to hide the trash bins. Would buy more for AC.
Costway Air Conditioner Fence 48-Inch Privacy Screen 2-Panel for Trash Can with Metal Stakes
06/19/2025
MJ
This way you won't see the dirty exterior of the trash can. Highly recommended.
I use it to cover the trash can. It is very practical. This way you can't see the dirty surface of the trash can. I strongly recommend it.
Costway Air Conditioner Fence 48-Inch Privacy Screen 2-Panel for Trash Can with Metal Stakes
06/19/2025
Troy Hopkins
Pre charged line set
Great product. Installation was very easy
MRCOOL® 25 ft Pre-Charged No-Vac Quick Connect Line set - NV25-3834-O
04/07/2025
Troy Hopkins
Great product
Instalation was easy and everything worked as it should
MRCOOL® Central Ducted Hyper Heat 4 Ton 16.5 SEER2 DC Inverter Heat Pump Split System with Smart Wi-Fi Thermostat and Wireless Remote Control - Multiposition - CENTRAL-48-HP-230B00-O
04/02/2025
Dwinding
Works well
May personal experience, used this product on 2 installations of Pioneer Mini Splits on my home. Following the directions I prepared both units, one can each unit, and also checked for leaks afterwards. No leaks detected and both systems have been operating properly. Follow-up check several weeks later to re inspect for leaks showed no leaks and pressure readings were excellent. In my case, the product worked as advertised and I am satisfied.
KWIK-E-VAC Line Set Flushing Kit Installation Simplifier for Mini Split Air Conditioning Systems
01/25/2025
What customers think about the store
Customers generally had positive experiences with this store, praising the quality of products, reasonable prices, efficient delivery, and helpful customer service. Many found the systems easy to install themselves with the guidance provided, though some prefe...Customers generally had positive experiences with this store, praising the quality of products, reasonable prices, efficient delivery, and helpful customer service. Many found the systems easy to install themselves with the guidance provided, though some preferred professional installation. The store seems to excel at responsive technical support, clearly explaining solutions to any issues. Customers highlighted the quiet operation, high efficiency, and good value of the heating/cooling systems compared to brand name alternatives. Overall, the store appears to offer good quality products at affordable prices backed by strong customer support.