This is the 36,000 BTU (3-ton) wall-mounted indoor air handler from HVAC Mirage's Polaris Cold-Climate Series — designed for contractors and homeowners who need a high-efficiency, R-454B-compatible indoor unit to pair with a compatible Polaris outdoor condenser. Outdoor unit and line set are sold separately. Professional installation required.
HVAC Mirage Polaris Cold-Climate Series — 36,000 BTU Wall Mounted Air Handler
The HVAC Mirage IPWH361C is a 3-ton (36,000 BTU) wall-mounted indoor air handler engineered for the Polaris Cold-Climate Series platform. Rated at 21 SEER2 and designed for R-454B low-GWP refrigerant, this unit is built to meet 2026 EPA AIM Act compliance requirements while delivering high-efficiency variable-speed comfort in residential and light commercial applications. It must be paired with a compatible Polaris Cold-Climate outdoor condenser — sold separately — and requires installation by a licensed HVAC professional.
What's Included
Indoor Air Handler
IPWH361C
+
Outdoor Condenser
Sold Separately
Wireless Remote Control
[NEEDS VERIFICATION]
Installation Requirements & Accessories
- Voltage: Requires a dedicated 208-230V / 60Hz / 1-Phase electrical circuit. Not compatible with 115V circuits.
- Circuit Breaker: Size per the matched outdoor condenser's MCA/MOP ratings — confirm with a licensed electrician. [NEEDS VERIFICATION — breaker size not specified in source data]
- Line Set (NOT included): Purchase a separate 3/8" liquid × 7/8" suction copper line set. Line set length and maximum allowable run are determined by the outdoor condenser model.
- Outdoor Condenser (NOT included): This listing covers the indoor air handler only. A compatible Polaris Cold-Climate Series outdoor condenser must be purchased separately.
- Mounting Bracket (NOT included): Wall mounting hardware must be sourced separately per installation requirements.
- Refrigerant (R-454B): An A2L mildly flammable refrigerant. Handling requires an EPA Section 608-certified technician. Must comply with ASHRAE 15 and local building codes.
- Professional Installation Required: This is not a DIY kit. No pre-charged line set is included. A licensed HVAC contractor must perform evacuation, flaring, and charging.
Pro-Installer Tip
[Technical Friction] When installing a 36,000 BTU wall-mounted head with R-454B, the most common field failure point is an improperly torqued flare connection at the line set service ports. Undertorqued flares on the 7/8" suction line are particularly prone to micro-leaks that surface weeks after commissioning, presenting as rising suction pressure and reduced cooling capacity rather than an obvious refrigerant loss.
[Long-Term Prevention] A properly torqued and leak-free flare connection eliminates the primary path for R-454B refrigerant loss, prevents gradual system undercharge that degrades SEER2 performance, and avoids the "E1" communication fault codes triggered when the system detects abnormal refrigerant pressure during low-ambient heating cycles.
[Expert Validation] Use a calibrated digital torque wrench set to the manufacturer's specified flare torque value for 3/8" and 7/8" connections (verify in the Polaris installation manual — typically 25–28 ft-lb for 7/8" on R-454B systems). Follow up with an electronic refrigerant leak detector rated for A2L refrigerants — standard R-22/R-410A detectors may not reliably sense R-454B.
[Professional Standard] R-454B is classified as A2L (mildly flammable) under ASHRAE 34. Per EPA Section 608, technicians must use certified recovery equipment rated for A2L refrigerants. Never vent R-454B to atmosphere. Proper vacuum below 500 microns, verified with an electronic micron gauge, is mandatory before opening the service valves.
Key Benefits
- 21 SEER2 Efficiency: Exceeds DOE 2023 minimum efficiency standards for the South and Southwest regions, reducing annual operating costs compared to standard 15-16 SEER2 systems.
- R-454B Low-GWP Refrigerant: Future-proofed for 2026 EPA AIM Act compliance with a GWP approximately 78% lower than R-410A, avoiding mid-life refrigerant transition costs.
- 3-Ton Capacity: 36,000 BTU output is appropriate for spaces typically ranging from 1,400 to 1,800 sq ft, depending on climate zone, insulation, and window load.
- Polaris Cold-Climate Platform: Engineered for low-ambient heating operation — confirm minimum operating temperature with the matched outdoor condenser's specification sheet.
- Wall Mounted Architecture: Surface-mounted installation does not require ceiling joist modification or drop-ceiling infrastructure, simplifying retrofit applications.
- 7-Year Compressor / 5-Year Parts Warranty: Above-average factory warranty coverage when installed and registered by a licensed HVAC professional.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | HVAC Mirage |
| Series | Polaris Cold-Climate Series |
| SKU / Model | IPWH361C |
| Product Type | Indoor Air Handler Unit — Wall Mounted |
| Cooling Capacity | 36,000 BTU/h (3.0 Ton) |
| SEER2 Rating | 21 SEER2 |
| Voltage | 220V (208-230V / 60Hz / 1-Phase) |
| Refrigerant | R-454B (Low-GWP, 2026 EPA AIM Act Compliant) |
| Line Set Size Required | 3/8" Liquid × 7/8" Suction (line set NOT included) |
| HSPF2 (Heating) | [NEEDS VERIFICATION] |
| Sound Level (Indoor) | [NEEDS VERIFICATION] |
| Breaker Size (MCA/MOP) | [NEEDS VERIFICATION — per matched outdoor condenser] |
| Operating Temperature Range (Heating) | [NEEDS VERIFICATION — confirm with Polaris outdoor unit spec sheet] |
| DIY Status | No — Professional Installation Required |
| Zone Count | 1 (Single-Zone Indoor Head) |
| Factory Warranty | 7-Year Compressor / 5-Year Parts Limited Warranty |
Compatibility & Fitment
- ✅ Compatible with: Dedicated 208-230V / 60Hz / 1-Phase electrical circuits.
- ✅ Compatible with: HVAC Mirage Polaris Cold-Climate Series outdoor condensers (AHRI-certified matched pairs only — verify model compatibility with HVAC Mirage before ordering).
- ✅ Compatible with: R-454B refrigerant systems. This unit is pre-designed for low-GWP R-454B and is NOT designed for R-410A or R-22.
- ✅ Line Set Fitment: Requires 3/8" liquid and 7/8" suction copper line set (purchased separately).
- ❌ NOT compatible with: 115V electrical circuits. A dedicated 208-230V single-phase circuit is mandatory.
- ❌ NOT compatible with: Non-Polaris-series outdoor condensers. Do not mix indoor heads from other HVAC Mirage product lines or other brands without verifying AHRI certification as a matched pair.
- ❌ NOT compatible with: R-410A or R-22 refrigerant. This unit is factory-configured for R-454B only.
- ❌ NOT included: Outdoor condenser, refrigerant line set, wall mounting bracket, electrical disconnect, communications wire, or installation hardware.
- ❌ NOT a complete system: This SKU (IPWH361C) is the indoor air handler only. A matched Polaris outdoor condenser must be purchased separately to form a complete mini split system.
Frequently Asked Questions
What breaker size do I need for this air handler?
This unit operates on 208-230V / 60Hz / 1-Phase power. The required circuit breaker size is [NEEDS VERIFICATION] — it must be determined from the matched Polaris Cold-Climate Series outdoor condenser's Minimum Circuit Ampacity (MCA) and Maximum Overcurrent Protection (MOP) ratings. Consult a licensed electrician. Do not use a 115V circuit — this unit is not compatible.
Is professional installation required, or is this a DIY kit?
Professional installation is required. This is not a pre-charged, no-vacuum DIY kit. R-454B refrigerant is an A2L (mildly flammable) refrigerant that requires an EPA Section 608-certified technician to handle legally. The 7-year compressor / 5-year parts warranty is valid only with installation performed by a licensed HVAC contractor.
Is the line set included, and if not, what size do I need to purchase?
The line set is not included. This listing covers the indoor air handler unit only. Purchase a separate copper line set sized to 3/8" liquid line and 7/8" suction line. Line set length should be determined by your installation layout; confirm the maximum allowable run length in the matched Polaris outdoor condenser's specification sheet before purchasing.
Is the outdoor condenser included with this purchase?
No. SKU IPWH361C is the indoor air handler unit only. The matching Polaris Cold-Climate Series outdoor condenser must be purchased separately. To maintain the rated 21 SEER2 performance and factory warranty, only use an AHRI-certified matched outdoor unit — confirm compatibility with HVAC Mirage before ordering.
What refrigerant does this system use, and is it compliant with 2025-2026 EPA regulations?
This unit uses R-454B, a low global warming potential refrigerant compliant with 2026 EPA AIM Act refrigerant transition requirements. R-454B carries an ASHRAE A2L (mildly flammable) safety classification. Installation must comply with local building codes, ASHRAE Standard 15, and all applicable EPA Section 608 regulations. Only EPA 608-certified technicians may purchase, handle, or recover R-454B.
Compliance & Warranty
- Factory Warranty: 7-Year Compressor Limited Warranty / 5-Year Parts Limited Warranty. Warranty is contingent on installation by a licensed HVAC professional and product registration with HVAC Mirage within the required registration window. [NEEDS VERIFICATION — confirm registration deadline and terms with HVAC Mirage]
- Refrigerant Compliance: R-454B is compliant with the EPA AIM Act 2026 HFC phasedown schedule. Handling requires EPA Section 608 technician certification.
- Efficiency Compliance: 21 SEER2 meets and exceeds DOE 2023 regional minimum efficiency standards for split-system air conditioners and heat pumps.
- Electrical Code: Installation must comply with NEC Article 440 (Air-Conditioning and Refrigerating Equipment) and all applicable local electrical codes.
4 Reviews Hide Reviews Show Reviews
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Smooth Installation & Fast Shipping
Arrived well packaged on a pallet. All components were clearly labeled. System started up immediately upon vacuum leak test and charge release.
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Great Value Direct from Manufacturer
Compared this model to higher priced brands and could not be happier. Clean aesthetic, high SEER2 efficiency, and clear submittal sheets. Fast order processing.
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Outstanding Heating Capacity in Cold Weather
We bought this unit for supplemental heating in our garage workspace. It ran flawlessly all winter through sub-zero temperatures. Great build quality and technical documentation.
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Extremely Quiet & Efficient Heat Pump
Installed this system in my home office. It is whisper quiet inside and cools the room down in under 5 minutes. Shipping from Mini Split Systems Direct was fast with liftgate delivery included.