This is the outdoor condenser (outdoor unit) only for a Carrier Performance 25 multi-zone ductless heat pump system β model 37MGRAQ30EA3, size 30K BTU. It's built for homeowners who want to pair one outdoor unit with multiple indoor heads (up to 6, depending on combination) to condition several rooms without ductwork. Indoor units, line sets, and mounting accessories are sold separately.
This 37MGRAQ30EA3 outdoor condenser is the outdoor half of a Carrier Performance 25 multi-zone ductless heat pump system, rated 30K BTU. It uses a variable-speed (inverter-driven) compressor and Puron Advance (R-454B) refrigerant, and is designed for AHRI-certified pairing with compatible Carrier indoor heads β sold separately β to serve multiple rooms from a single outdoor unit. 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: Carrier 37MGRAQ30EA3 (30K BTU, multi-zone, variable-speed compressor)
- Indoor unit(s): NOT included β select compatible indoor heads separately based on your zone plan
Installation Requirements & Accessories
- Voltage: 208/230V, single-phase
- Minimum Circuit Ampacity (MCA): 30.5A
- Maximum Overcurrent Protection (MOCP): 35A
- Liquid pipe connection: 5 x 1/4 in
- Suction pipe connection: 3 x 3/8 in + 2 x 1/2 in
- Refrigerant: R-454B (Puron Advance), A2L classification β professional handling required
- Line set is NOT included β must be purchased separately, sized to the connections above
- Indoor unit(s), wall sleeve, and mounting bracket are NOT included
- Not compatible with 115V-only circuits
- Not a listed match for indoor units outside Carrier's AHRI-certified 37MGRA family combinations
- Professional installation is required β this is not a DIY unit
Pro-Installer Tip
On multi-zone R-454B systems, flare connections at both the outdoor unit and each indoor head are the most common source of long-term refrigerant loss and communication faults if a joint slowly weeps charge. Torque every flare joint with a calibrated digital torque wrench to the manufacturer's spec rather than by feel, and pull the system down below the target vacuum with a micron gauge before opening service valves β do not estimate this step. Because this unit runs A2L refrigerant, only an EPA Section 608 certified technician should handle recovery, evacuation, and charging, and that certification is what keeps the Consumer Choice Warranty's labor coverage intact.
Key Benefits
- Variable-speed (inverter-driven) compressor for closer temperature control across connected zones
- Up to 25 SEER2 cooling efficiency and 10 HSPF2 (Region IV) heating efficiency at this size
- Outdoor sound pressure level of 64.5 dB(A) at this size
- Rated heating operation down to -13Β°F ambient, with published heating capacity data at 5Β°F and 17Β°F
- Puron Advance (R-454B) refrigerant, rated by the manufacturer as reducing global warming potential by 75% versus prior refrigerants
- Supports multiple indoor zones from one outdoor condenser for tailored room-by-room comfort
| Spec | Value | Unit |
|---|---|---|
| Cooling Capacity (Rated) | 30000 | BTU/h |
| Heating Capacity (Rated) | 25000 | BTU/h |
| SEER2 | 25 | SEER2 |
| EER2 | 13 | EER2 |
| HSPF2 (Region IV) | 10 | HSPF2 |
| HSPF2 (Region V) | 8 | HSPF2 |
| Voltage | 208/230 | V |
| Minimum Circuit Ampacity (MCA) | 30.5 | A |
| Maximum Overcurrent Protection (MOCP) | 35 | A |
| Outdoor Sound Pressure Level | 64.5 | dBA |
| Operating Range | -13 to 75 | Β°F |
| Refrigerant Type | R-454B | β |
| Liquid Pipe Size | 5 x 1/4 | in |
| Suction Pipe Size | 3 x 3/8 + 2 x 1/2 | in |
| Net Weight | 168.87 | lbs |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
- Compatible with dedicated 208/230V single-phase circuits sized to 30.5A MCA / 35A MOCP
- Designed for AHRI-certified pairing with compatible Carrier 37MGRA-family indoor heads (indoor units sold separately)
- Not compatible with 115V-only circuits
- Not a listed match for indoor unit families outside the certified 37MGRA combination charts
- Line set is NOT included β must be sized and purchased to match the liquid/suction connections listed above
- Wall sleeve, mounting bracket, and grille are NOT included
FAQ
What breaker size do I need for this system?
The 37MGRAQ30EA3 outdoor unit has a Minimum Circuit Ampacity (MCA) of 30.5A and a Maximum Overcurrent Protection (MOCP) rating of 35A. A licensed electrician should size the breaker and wire gauge to these values and local code.
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 (A2L) refrigerant and requires a licensed HVAC professional for installation, evacuation, and charging. Installation by a licensed HVAC professional is required to maintain warranty.
Is the line set included, and if not, what size do I need to buy?
Line sets are sold separately. For this outdoor unit, the manufacturer specifies a liquid line size of 5 x 1/4 in and a suction line size of 3 x 3/8 in + 2 x 1/2 in across the connection ports for this size unit.
Does this system work in cold climates (low-ambient heating)?
Yes. The published operating range for this outdoor unit is -13Β°F to 75Β°F, and heating capacity at 5Β°F is listed at 26000 Btu/h for this size.
How many indoor units can this outdoor unit support?
This outdoor unit is part of the multi-zone 37MGRA family, which supports pairing with up to six compatible indoor units depending on combination and total capacity. Exact zone counts and matched indoor models must be selected from Carrier's AHRI-certified combination charts.
Compliance & Warranty
This unit uses R-454B (A2L) refrigerant and requires handling by an EPA Section 608 certified technician. Installation by a licensed HVAC professional is required to maintain warranty. Carrier's Consumer Choice Warranty offers, upon timely registration on eligible equipment, either a 10-year parts-only limited warranty or a 5-year parts plus 3-year labor limited warranty β refer to the "Resources (System Manuals and Warranty)" Tab above for full registration terms and eligibility.
