WEATHERMAKER / AIR-SOURCE HEAT PUMP

37MBHAQ58AA3

45M Series

3 published source records · source checked Sep 21, 2026

SEER2 range15.4–18.1BTU/Wh
HSPF2 range9.2–10.7BTU/Wh
Cooling capacity54,000–55,000BTU/h

Each efficiency range summarizes published EPA records for 37MBHAQ58AA3. The highest SEER2 and HSPF2 may belong to different combinations. Open a source record below to see its ratings and the scope of its component information.

Model patterns and component strings are preserved exactly. How to read model patterns and combinations →

Heating performance & equipment details

Ranges include the 3 published source records for this model. Values in different rows may describe different configurations. Open an individual record to compare values from the same test configuration.

Reported fieldValue / rangeRecords supplying it
SEER2 · BTU/Wh15.4–18.13 / 3
EER2 · BTU/Wh9–10.23 / 3
HSPF2 · BTU/Wh9.2–10.73 / 3
Cooling capacity · BTU/h54,000–55,0003 / 3
Heating capacity at 47°F / 8.3°C · BTU/h59,000–60,0003 / 3
Heating capacity at 17°F / −8.3°C · BTU/h41,000–45,0003 / 3
Heating capacity at 5°F / −15°C · BTU/h53,000–54,0003 / 3
COP at 5°F / −15°C1.91–2.13 / 3
Equipment / loop typeHP - Mini or Multi Split · HP - Split System3 / 3
Refrigerant / source-reported GWPR-454B (GWP:470 | Lower GWP)3 / 3
Compressor stagingContinuously variable3 / 3
Connected capabilityNo3 / 3

47°F = 8.3°C; 17°F = −8.3°C; 5°F = −15°C. COP is dimensionless. These are reported rating points, not a prediction of a particular home’s heat demand or operating limit.

Matched systems

Each row is one source record. The component column distinguishes listed combinations from outdoor-model ratings without an indoor configuration.

Indoor unit / required furnaceSEER2BTU/WhHSPF2BTU/WhHeating capacity at 5°F / −15°CBTU/hCOP at 5°F / −15°CRecord & comparison
45MCFAQ58XA3Cold climate designationAHRI reference: 21532403118.1010.70540001.91EPA 3555988
45MBDAQ58XH3Cold climate designationAHRI reference: 21532403215.9010.40535002.10EPA 3555989
45MBAAQ60XA3Cold climate designationAHRI reference: 21531885515.409.20530002.00EPA 3560703

Sources and documentation

The table uses public EPA ENERGY STAR data. AHRI references are reported by EPA and have not been independently checked with AHRI. Source records do not establish availability, installation suitability or rebate eligibility.

No manufacturer manual has been matched to this model.

Collection method, revision history and known limitations →