This is the outdoor condenser (outdoor unit) only for a Carrier Performance 20 single-zone mini split heat pump system, size 36K. It's built for licensed HVAC contractors and property owners sourcing the outdoor half of a light commercial ductless system — the matching indoor unit, line set, and installation accessories are sold separately.
This 36K-size outdoor condenser is part of Carrier's Performance 20 light commercial single-zone mini split heat pump lineup, rated up to 20 SEER2 and 10.4 HSPF2 as a family (AHRI system ratings depend on the specific matched indoor unit, named together in Carrier's rating tables). It uses a variable-speed inverter-driven compressor and R-454B (Puron Advance™) refrigerant. 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
- Outdoor Condenser (Outdoor Unit): Carrier 37MBRAQ36AA3, 36K size, 208/230V single-phase, variable-speed compressor
- Indoor Unit: NOT included — sold separately; must be an AHRI-certified matched indoor unit from the compatible 37MBRA family lineup
Installation Requirements & Accessories
- Voltage: 208/230V; 1-Phase; 60Hz — this is a 208/230V product, not compatible with 115V-only circuits
- Refrigerant: R-454B (Puron Advance™), A2L classification — professional installation required
- Line Set: liquid line 3/8" (9.52 mm), suction line 3/4" (19 mm) — Line Set Sold Separately
- Standard piping length 24.6 ft (7.5 m); maximum total piping length per system 246 ft (75 m)
- Power connection wiring: 14 AWG, 2-wire + ground
- Not compatible with 115V-only circuits
- Not a listed match for indoor units outside the AHRI-certified 37MBRA family combinations
- Indoor unit, wall sleeve, mounting bracket, and disconnect NOT included
Pro-Installer Tip
Flare connections on R-454B systems are the most common source of slow refrigerant leaks and nuisance callbacks. Torque every flare fitting to the manufacturer's specification with a calibrated torque wrench rather than by feel — an under-torqued flare will weep refrigerant slowly enough to pass a soap-bubble check today and still trigger a low-charge fault months later. Pull the system down to a proper vacuum and confirm decay before charging; this is non-negotiable on A2L refrigerants where EPA Section 608 certification and handling procedures apply to anyone opening the refrigerant circuit. Document the vacuum and charge verification on the startup sheet — it's the difference between a callback and a clean commissioning.
Key Benefits
- Variable-speed inverter compressor for steadier temperature control versus single-speed compressors
- Outdoor sound pressure as low as 62.5 dBA for this 36K size
- Puron Advance™ (R-454B) refrigerant, described by the manufacturer as reducing global warming potential by 75% versus prior refrigerants
- Piping flexibility up to 246 ft (75 m) total system length for flexible outdoor unit placement
- Crankcase heater standard on all unit sizes for compressor protection
- Electronic expansion valve manages refrigerant flow to the connected indoor unit
| Spec | Value | Unit |
|---|---|---|
| Model | 37MBRAQ36AA3 | — |
| Cooling Capacity (Family) | 36 | K BTU/h nominal size |
| SEER2 (Family Max) | Up to 20 | SEER2 |
| HSPF2 (Family Max) | Up to 10.4 | HSPF2 |
| Voltage | 208/230 | V; 1-Ph; 60Hz |
| Refrigerant Type | R-454B | — |
| Refrigerant Oil | ESTER OIL | — |
| Charge Amount | 5.73 (2.6) | lb (kg) |
| Liquid Pipe Size | 3/8 (9.52) | in (mm) |
| Suction Pipe Size | 3/4 (19) | in (mm) |
| Outdoor Sound Pressure | 62.5 | dBA |
| Operating Weight | 162.48 (73.7) | lb (kg) |
| Outdoor Height | 31.84 (809) | in (mm) |
| Outdoor Width | 37.26 (946) | in (mm) |
| Outdoor Depth | 16.02 (407) | in (mm) |
| Standard Piping Length | 24.6 (7.5) | ft (m) |
| Max Total Piping Length Per System | 246 (75) | ft (m) |
| Power Connection Wiring | 14 AWG, 2-wire + Ground | — |
| Compressor Type | Variable-speed inverter | — |
| Outdoor Airflow | 2414.6 | CFM |
| MCA / MOCP (Breaker Sizing) | [NEEDS VERIFICATION] | — |
| Operating Range (Heating/Cooling, table values) | [NEEDS VERIFICATION] | — |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
- This listing is the outdoor condenser (outdoor unit) only — model 37MBRAQ36AA3, 36K size
- Must be paired with an AHRI-certified matched indoor unit from the compatible 37MBRA family lineup (indoor unit sold separately)
- Requires a dedicated 208/230V, 1-phase, 60Hz circuit — not compatible with 115V-only circuits
- Not a listed match for indoor units outside the AHRI-certified 37MBRA family combinations
- Line set, wall sleeve, mounting bracket, and disconnect are NOT included with this outdoor unit
FAQ
What breaker size do I need for this system?
MOCP (maximum overcurrent protection) and MCA (minimum circuit amps) values for the 37MBRAQ36AA3 specifically are [NEEDS VERIFICATION] in the provided source data. Power supply is confirmed as 208/230V, 1-Phase, 60Hz with 14 AWG, 2-wire + ground power connection wiring. Consult the manufacturer's electrical data table before sizing the circuit.
Is professional installation required to keep the warranty valid, or is this a true DIY kit?
This is not a DIY kit. This system uses R-454B (A2L mildly flammable) refrigerant and requires professional installation. Installation by a licensed HVAC professional is required to maintain the warranty.
Is the line set included, and if not, what size do I need to buy?
The line set is not included and is sold separately. This outdoor unit requires a 3/8 inch (9.52 mm) liquid line and a 3/4 inch (19 mm) suction line. Standard piping length is 24.6 ft (7.5 m); total maximum piping length per system is 246 ft (75 m).
Does this system work in cold climates (low-ambient heating)?
Per the manufacturer overview, this system is described as capable of heating in temperatures down to -13°F and cooling in temperatures up to 122°F. Confirm the exact published operating range table for the 37MBRAQ36AA3 model with your installer before relying on this for a specific low-ambient application.
Will this outdoor unit fit any indoor unit I choose?
No. This outdoor unit must be paired with an AHRI-certified matched indoor unit from the compatible Carrier lineup (indoor unit not included). It is not a listed match for indoor units outside the matched 37MBRA family combinations.
Compliance & Warranty
This outdoor unit uses R-454B (A2L, mildly flammable) refrigerant and must be installed by a licensed, EPA Section 608-certified HVAC professional in accordance with local and national electrical codes. Installation by a licensed HVAC professional is required to maintain warranty. Carrier's Consumer Choice Warranty, upon timely registration, offers on eligible equipment either a 10-year parts-only limited warranty or a 5-year parts plus 3-year labor limited warranty — confirm exact eligible terms in the manufacturer documentation under the Resources tab.
