Grandaire / AIR-SOURCE HEAT PUMP

W5H5S31*K*AAA*

15 SEER2 HP

15 published source records · source checked Sep 21, 2026

SEER2 range15.2–16BTU/Wh
HSPF2 range7.8–8BTU/Wh
Cooling capacity27,400–29,400BTU/h

Each efficiency range summarizes published EPA records for W5H5S31*K*AAA*. 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 15 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/Wh15.2–1615 / 15
EER2 · BTU/Wh12–1315 / 15
HSPF2 · BTU/Wh7.8–815 / 15
Cooling capacity · BTU/h27,400–29,40015 / 15
Heating capacity at 47°F / 8.3°C · BTU/h29,400–30,60015 / 15
Heating capacity at 17°F / −8.3°C · BTU/h17,500–18,10015 / 15
Heating capacity at 5°F / −15°C · BTU/h13,400–14,00015 / 15
COP at 5°F / −15°C2–2.0615 / 15
Equipment / loop typeHP - Split System15 / 15
Refrigerant / source-reported GWPR-454B (GWP:470 | Lower GWP)15 / 15
Compressor stagingSingle stage15 / 15
Connected capabilityNo15 / 15

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
WCHL425*C*AHRI reference: 21768339716.008.00134002.05EPA 4506018
FM(C,U)5Z36**AL*AHRI reference: 21768352516.008.00134002.00EPA 4506136
FM(C,U)5Z30**AL*AHRI reference: 21768349316.008.00134002.00EPA 4506710
FMA5X30**AL*AHRI reference: 21768362116.008.00137002.00EPA 4506726
FMA5X36**AL*AHRI reference: 21768365316.008.00137002.00EPA 4506758
WCHL305*B*AHRI reference: 21768326915.507.80134002.00EPA 4505669
W5A*43M21XA*+ furnace: WFEU080C060B*AHRI reference: 21769224815.508.00140002.06EPA 4506772
W5A*43M21XA*+ furnace: WFAX100C060B*AHRI reference: 21769276515.508.00140002.06EPA 4507179
W5A*43M21XA*+ furnace: WFE*110C060C*AHRI reference: 21769208715.508.00140002.04EPA 4507246
W5A*43M21XA*+ furnace: WFEU060B048B*AHRI reference: 21769222115.508.00140002.06EPA 4507311
FEVA0036**+NAVA53601CKAHRI reference: 21770218215.507.80134002.00EPA 4508842
FEVB0036**+NAVA53601CKAHRI reference: 21770220915.507.80134002.00EPA 4508881
FM(C,U)5S36**AL*AHRI reference: 21845250615.508.00135002.00EPA 4624303
FM(C,U)5S30**AL*AHRI reference: 21845248715.508.00135002.00EPA 4624322
FMA5L30**AL*AHRI reference: 21768355715.208.00138002.00EPA 4506168

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 →