This is the outdoor condenser (outdoor unit) only for a Carrier Performance 26 single-zone ductless mini split heat pump. It is sold separately from the indoor head, line set, and mounting accessories. This listing is for homeowners or installers who already have a matched indoor unit specified, or who are replacing an existing 37MARA outdoor unit.
Overview
The Carrier Performance 26 outdoor condenser is the outdoor component of a single-zone ductless mini split heat pump system. It is built for pairing with a matched indoor unit (wall-mounted, cassette, ducted, or floor console — sold separately) using Puron Advance™ R-454B refrigerant. AHRI-certified performance is rated at the system level with the matched indoor unit, and exact SEER2/HSPF2 ratings for this specific 24K outdoor-indoor combination are not confirmed in the data provided here [NEEDS VERIFICATION]. Note: If you would like to review the manufacturer Product Specifications, Warranty, Brochure, etc., for this system, please refer to the "Resources (System Manuals and Warranty)" Tab above on this page.
System Components (This Listing)
- Outdoor condenser unit, model 37MARAQ24AA3 (family 37MARA, size 24), inverter-driven (variable-speed) compressor
- Refrigerant: Puron Advance™ R-454B, factory charge 4.41 lb (2.0 kg)
- Indoor unit NOT included — must be purchased separately and matched to this outdoor model per AHRI-certified combination tables
Installation Requirements & Accessories
- Electrical: 208/230V; 1-Phase; 60Hz
- Minimum Circuit Ampacity (MCA): 24A; Maximum Overcurrent Protection (MOP): 25A — size breaker per NEC and local code
- Liquid line: 3/8 in (9.52mm); Suction line: 5/8 in (15.9mm) — line set sold separately
- Refrigerant lines should not be buried in the ground
- Professional installation required — R-454B (mildly flammable A2L classification) refrigerant handling requires EPA Section 608 certification
- NOT compatible with 115V-only circuits
- NOT included: indoor unit, line set, wall sleeve, mounting bracket, communication wire, disconnect
Pro-Installer Tip
Flare connections on R-454B systems are unforgiving of shortcuts. A poorly seated or under-torqued flare on the 3/8 in liquid or 5/8 in suction line is the most common source of slow refrigerant leaks and nuisance low-charge faults down the road. Torque flare nuts to the connection size using a calibrated digital torque wrench rather than a "feel" method, and pull the system down to the vacuum level specified in the installation manual before opening service valves. This protects the factory charge, prevents long-term capacity loss, and is required under EPA Section 608 refrigerant handling regulations for any technician working on this A2L system.
Key Benefits
- Inverter-driven (variable-speed) compressor for smoother temperature control versus single-speed units
- Outdoor sound level as low as 58 dBA at this size
- Low-ambient heating capability down to -13°F (-25°C) per published operating range
- Puron Advance™ R-454B refrigerant with reduced global warming potential versus legacy refrigerants
- Compatible with a range of matched indoor unit styles (wall, cassette, ducted, floor console) sold separately
Technical Table
| Spec | Value | Unit |
|---|---|---|
| Model | 37MARAQ24AA3 | — |
| Component Role | Outdoor Condenser (Outdoor Unit Only) | — |
| Cooling Rated Capacity | 25000 | BTU/h |
| Heating Rated Capacity | 18800 | BTU/h |
| Voltage | 208/230;1;60 | V;Ph;Hz |
| Minimum Circuit Ampacity (MCA) | 24 | A |
| Maximum Overcurrent Protection (MOP) | 25 | A |
| Outdoor Sound Level | 58 | dBA |
| Refrigerant Type | R454B | — |
| Refrigerant Charge Amount | 4.41 (2.0) | lb (kg) |
| Liquid Pipe Size | 3/8 (9.52) | in (mm) |
| Suction Pipe Size | 5/8 (15.9) | in (mm) |
| Net Weight | 122.14 | lb |
| Gross Weight | 142.86 | lb |
| Operating Range - Cooling | -13 to 122 (-25 to 50) | °F (°C) |
| Operating Range - Heating | -13 to 75 (-25 to 24) | °F (°C) |
| SEER2 | [NEEDS VERIFICATION] | — |
| HSPF2 | [NEEDS VERIFICATION] | — |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
- Compatible with 208/230V single-phase, 60Hz dedicated circuits sized to 24A MCA / 25A MOP
- Designed to pair with a matched indoor unit from the 37MARA-compatible AHRI combination list (wall, cassette, ducted, floor console options exist in manufacturer data)
- NOT compatible with 115V-only circuits
- NOT a listed match for indoor units outside the AHRI-certified 37MARAQ24AA3 combinations — verify exact indoor pairing before purchase
- Line set (3/8 in liquid / 5/8 in suction) is NOT included
- Wall sleeve, mounting bracket, and communication wiring are NOT included
FAQ
What breaker size do I need for this system?
For the 37MARAQ24AA3 outdoor unit, Minimum Circuit Ampacity (MCA) is 24A and Maximum Overcurrent Protection (MOP) is 25A. Use these values with the National Electrical Code and local codes to size the breaker; do not rely on family-wide figures.
Is professional installation required to keep the warranty valid, or is this a true DIY kit?
This is not a DIY kit. It uses R-454B refrigerant with flare or brazed connections and requires professional installation, including EPA Section 608 certified refrigerant handling.
Is the line set included, and if not, what size do I need to buy?
No line set is included. This 24K outdoor unit requires a 3/8 in (9.52mm) liquid line and a 5/8 in (15.9mm) suction line, sized and purchased separately by your installer.
Does this system work in cold climates (low-ambient heating)?
The published heating operating range for this outdoor unit is -13 to 75°F (-25 to 24°C), so it is rated to operate in cold-climate low-ambient conditions within that range.
Which indoor unit does this outdoor condenser pair with?
AHRI-matched indoor units named alongside 37MARAQ24AA3 in manufacturer data include 615AHAQ24XA3 (wall unit family) and duct/cassette/floor-console options listed under the 37MARA family tables; confirm exact matched pairing before ordering. Indoor unit is sold separately from this listing.
Compliance & Warranty
Installation by a licensed HVAC professional is required to maintain warranty. This outdoor unit uses R-454B (A2L classification) refrigerant; installation and service must be performed by an EPA Section 608 certified technician. Upon timely registration on eligible equipment, Carrier's Consumer Choice Warranty offers either a 10-year parts-only limited warranty or a 5-year parts plus 3-year labor limited warranty — refer to the "Resources (System Manuals and Warranty)" Tab above for full terms.
