This is the outdoor condenser (outdoor unit) only for a Carrier Performance 20 single-zone light commercial mini split heat pump system — model 37MBRAQ58AA3, a 58K-size unit from the 37MBRA family. It's built for contractors and property owners matching a new or replacement outdoor unit to a compatible indoor fan coil in a single-zone application; it does not include an indoor head, line set, or mounting accessories.
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.
The Carrier Performance 20 outdoor condenser (37MBRAQ58AA3) is engineered for single-zone light commercial and residential ductless applications, pairing with a matched Carrier indoor fan coil listed under AHRI system-rated combinations. This is a component listing — MSSD lists the outdoor unit and matching indoor units separately so you can build the exact combination your space requires. The variable-speed inverter compressor and Puron Advance (R-454B) refrigerant are engineered for reduced global warming potential relative to older refrigerant types.
System Components
- Outdoor Unit (included in this listing): Carrier 37MBRAQ58AA3, 58K size, 37MBRA family, variable-speed inverter-driven compressor.
- Indoor Unit: NOT included. Requires a separately purchased, AHRI-matched Carrier indoor fan coil compatible with the 37MBRA outdoor family.
Installation Requirements & Accessories
- Voltage: 208/230V; 1-Phase; 60Hz. Not compatible with 115V-only circuits.
- Refrigerant: R-454B (A2L mildly flammable classification) — professional installation required.
- Liquid line size: 3/8 in (9.52 mm). Suction line size: 3/4 in (19 mm).
- Standard piping length: 24.6 ft; minimum piping length: 10 ft; total maximum system piping length: 246 ft (75 m).
- Power connection wiring: 14 AWG, 2-wire plus ground.
- Line Set Sold Separately. Not included with this outdoor unit.
- Not Included: Indoor fan coil/indoor unit, wall sleeve, mounting bracket, line set, and grille accessories.
- Not Compatible With: 115V-only circuits.
Pro-Installer Tip
Flare connections on R-454B systems are unforgiving of shortcuts — an under-torqued or scored flare on the 3/8" liquid line will leak slowly and show up months later as a communication or low-charge fault rather than an immediate failure. Torque every flare joint to the connection manufacturer's spec with a calibrated Digital Torque Wrench, and pull the system down to the vacuum level specified in the installation manual before charging — [NEEDS VERIFICATION] on the specific micron target for this model, since the source documentation provided does not state one. Anyone handling R-454B refrigerant on this job must hold current EPA Section 608 certification; skipping proper evacuation procedure both wastes refrigerant and undercuts the efficiency this unit is rated for.
Key Benefits
- Variable-speed inverter compressor for steadier temperature control than fixed-speed equipment.
- Rated up to 20 SEER2 and up to 10.4 HSPF2 at the system level (matched indoor unit required for AHRI rating).
- Outdoor sound pressure as low as 63.5 dB(A) at this size.
- Heating capability down to -13°F and cooling capability up to 122°F ambient, per manufacturer overview.
- Puron Advance (R-454B) refrigerant, rated by the manufacturer as reducing global warming potential by 75% versus traditional refrigerants.
- Long-line piping flexibility up to 246 ft (75 m) total system piping length.
Technical Table
| Spec | Value | Unit |
|---|---|---|
| Model | 37MBRAQ58AA3 | — |
| Component Role | Outdoor Condenser (Outdoor Unit) Only | — |
| Cooling Efficiency (System, up to) | 20 | SEER2 |
| Heating Efficiency (System, up to) | 10.4 | HSPF2 |
| Voltage | 208/230; 1-Phase; 60 | V / Ph / Hz |
| Refrigerant Type | R-454B (Puron Advance) | — |
| Refrigerant Charge Amount | 9.04 | lb |
| Outdoor Sound Pressure | 63.5 | dBA |
| Operating Weight | 209.44 | lb |
| Liquid Pipe Size | 3/8 (9.52) | in (mm) |
| Suction Pipe Size | 3/4 (19) | in (mm) |
| Standard Piping Length | 24.6 | ft |
| Min Piping Length | 10 | ft |
| Max Piping Length (no additional refrigerant) | 24.6 | ft |
| Total Maximum Piping Length per System | 246 | ft |
| Outdoor Airflow | 4240.3 | CFM |
| Unit Height | 52.5 (1333) | in (mm) |
| Unit Width | 37.5 (952) | in (mm) |
| Unit Depth | 16.3 (415) | in (mm) |
| Power Connection Wiring | 14 AWG, 2-wire + Ground | — |
| Metering Device | Electronic Expansion Valve | — |
| Operating Range (min/max) | [NEEDS VERIFICATION] | °F |
| MCA / MOCP | [NEEDS VERIFICATION] | A |
| DIY Status | No — Professional Installation Required | — |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
- This listing is the 37MBRAQ58AA3 outdoor condenser only — it is not a complete system, wall-mounted unit, cassette unit, or ducted kit.
- Requires pairing with an AHRI-matched Carrier indoor fan coil from a compatible family; specific matched indoor model numbers are not listed in the provided source data — confirm against Carrier's AHRI directory or the system manual before ordering.
- Compatible with dedicated 208/230V, single-phase, 60Hz circuits only.
- Not compatible with 115V-only circuits.
- Indoor unit, line set, wall sleeve, mounting bracket, and grille accessories are NOT included and must be purchased separately.
- Uses R-454B (A2L mildly flammable) refrigerant — installation must follow applicable local and national electrical and mechanical codes.
FAQ
What breaker size do I need for this system?
[NEEDS VERIFICATION] — the manufacturer text provided does not state a specific MCA/MOCP or breaker amperage figure for the 37MBRAQ58AA3. Power connection wiring is listed as 14 AWG, 2-wire plus ground on a 208/230V, 1-phase, 60Hz supply. Confirm exact MCA/MOCP with the installation manual before wiring.
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 and requires professional installation. Carrier's Consumer Choice Warranty offers, upon timely registration, either a 10-year parts-only limited warranty or a 5-year parts plus 3-year labor limited warranty on eligible equipment.
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 liquid line and a 3/4 inch suction line. Standard piping length is 24.6 ft, with a total maximum system piping length of 246 ft (75 m) and a minimum run of 10 ft.
Does this system work in cold climates (low-ambient heating)?
Yes. Per manufacturer overview text, this system is built to deliver heating capability in outdoor temperatures down to -13°F and cooling capability in outdoor temperatures up to 122°F. Exact minimum/maximum operating range table values for this specific model were not confirmed in the provided data.
What is the sound level of this outdoor unit?
The 37MBRAQ58AA3 outdoor unit has a rated outdoor sound pressure of 63.5 dB(A).
Compliance & Warranty
Installation by a licensed HVAC professional is required to maintain warranty. This unit uses R-454B (A2L) refrigerant; handling and charging must be performed by an EPA Section 608 certified technician in accordance with applicable codes. Upon timely registration, Carrier's Consumer Choice Warranty 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 warranty terms and registration requirements in the manufacturer documentation referenced above.
