ECOTEMP / AIR-SOURCE HEAT PUMP

W5H8T36*K*AAA*

2-STAGE 18 SEER HP

69 published source records · source checked Sep 21, 2026

SEER2 range15.2–17BTU/Wh
HSPF2 range7.8–8.5BTU/Wh
Cooling capacity33,800–38,000BTU/h

Each efficiency range summarizes published EPA records for W5H8T36*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 69 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/Wh15.2–1769 / 69
EER2 · BTU/Wh11.7–1369 / 69
HSPF2 · BTU/Wh7.8–8.569 / 69
Cooling capacity · BTU/h33,800–38,00069 / 69
Heating capacity at 47°F / 8.3°C · BTU/h37,200–39,00069 / 69
Heating capacity at 17°F / −8.3°C · BTU/h23,000–24,20069 / 69
Heating capacity at 5°F / −15°C · BTU/h17,500–19,60069 / 69
COP at 5°F / −15°C1.78–2.4869 / 69
Equipment / loop typeHP - Split System69 / 69
Refrigerant / source-reported GWPR-454B (GWP:470 | Lower GWP)69 / 69
Compressor stagingTwo-stage69 / 69
Connected capabilityNo69 / 69

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
WCGL605*D*AHRI reference: 21562896017.008.50186002.48EPA 3950959
WCGL485*C*AHRI reference: 21562890616.508.10187002.30EPA 3950444
QFVA5D4821X*AHRI reference: 21869542116.508.10184002.24EPA 4683406
W5VM48M21XA*+ furnace: WFEU080C060B*AHRI reference: 21561955016.008.00175001.90EPA 3946345
W5VM49M21XA*+ furnace: WFEU080C060B*AHRI reference: 21561991416.008.00177001.95EPA 3946571
W5VM49M21XA*+ furnace: WFST100C060A*AHRI reference: 21562009316.008.00179001.90EPA 3946686
W5VC38M17XA*+ furnace: WFEU040B036B*AHRI reference: 21562133916.008.00176001.85EPA 3946889
W5VC38M17XA*+ furnace: WFEU060B048B*AHRI reference: 21562135816.008.00176001.90EPA 3946907
W5VC38M17XA*+ furnace: WFET090B048A*AHRI reference: 21562145016.008.00176001.90EPA 3946976
W5A*43M21XA*+ furnace: WFEU060B048B*AHRI reference: 21563778316.008.10193002.26EPA 3955543
W5A*43M21XA*+ furnace: WFEU080C060B*AHRI reference: 21563781216.008.50191002.40EPA 3955568
W5A*48M21XA*+ furnace: WFEU080C060B*AHRI reference: 21563890616.008.10190002.40EPA 3956135
W5VM49M21XA*+ furnace: WFJT100C060A*AHRI reference: 21571631116.008.00179001.90EPA 3997655
QFVA5D3617X*AHRI reference: 21869540416.008.10183002.20EPA 4683423
W5VM48M21XA*+ furnace: WFEU060B048B*AHRI reference: 21561953115.507.80177001.78EPA 3946327
W5VM48M21XA*+ furnace: WFST100C060A*AHRI reference: 21561985615.507.80178001.78EPA 3946512
W5VM49M21XA*+ furnace: WFET090B048A*AHRI reference: 21561996815.507.80180001.78EPA 3946623
W5VC37M21XA*+ furnace: WFEU060B048B*AHRI reference: 21562095815.507.80177001.78EPA 3946803
W5VC38M17XA*+ furnace: WFSU060B048B*AHRI reference: 21562153715.507.80178001.78EPA 3947035
W5VC38M17XA*+ furnace: WFST080B048A*AHRI reference: 21562159115.507.80179001.80EPA 3947088

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 →