Heat pump model directory / page 483
Browse air-source heat pump outdoor models listed for the US market. Compare SEER2 and HSPF2 source ratings, listed component combinations and documented coverage on each model page.
Before comparing ratings: how matched systems work.
11,881 models · Source-backed US equipment index
A model may have several rated combinations.WellsWSA Series
Air-source heat pumpWSA-33HFMO
20SEER2
10HSPF2
1 record View configuration
WellsWSB Series
Air-source heat pumpWSB-09HFBO
21.5SEER2
9.1HSPF2
1 record View configuration
WellsWSB Series
Air-source heat pumpWSB-09HFMO
21.7SEER2
9.4HSPF2
1 record View configuration
WellsWSB Series
Air-source heat pumpWSB-18HFMO
19.5SEER2
8.7HSPF2
1 record View configuration
WellsWSB Series
Air-source heat pumpWSB-30HFMO
21SEER2
9.1HSPF2
1 record View configuration
WellsWUA Series
Air-source heat pumpWUCA-24HFMO
16.1–17.4SEER2
9.8–10HSPF2
2 records View configuration
WellsWUA Series
Air-source heat pumpWUCA-30HFMO
15.2–16.2SEER2
8.5–9.7HSPF2
3 records View configuration
WellsWUA Series
Air-source heat pumpWUCA-36HFMO
15.2–16SEER2
8.6–10HSPF2
3 records View configuration
WellsWUA Series
Air-source heat pumpWUCA-48HFMO
15.6SEER2
9.4HSPF2
1 record View configuration
WellsWUA Series
Air-source heat pumpWUCA-60HFMO
15.3SEER2
9.4HSPF2
1 record View configuration
WellsWUA Series
Air-source heat pumpWUCB-36HFMO
15.2–16.3SEER2
8.5–9.5HSPF2
3 records View configuration
WestinghouseWH ULTRA HD-COIL
Air-source heat pumpWHM48SZA21S
15.55SEER2
8.55HSPF2
1 record View configuration
WestinghouseHi UNI
Air-source heat pumpWHP09SZA21S
22SEER2
9HSPF2
1 record View configuration
WestinghouseHi MULTI Xtreme
19–21SEER2
9.4–9.5HSPF2
2 records Check rating scope
WestinghouseHi UNI
Air-source heat pumpWHP18SZA21S
22.5SEER2
8.6HSPF2
1 record View configuration
WestinghouseHi MULTI Xtreme
21–22SEER2
8.6–9.05HSPF2
2 records Check rating scope
WestinghouseHi UNI
Air-source heat pumpWHP24SZA21S
20.5SEER2
8.6HSPF2
1 record View configuration
WestinghouseHi MULTI Xtreme
19.5–21SEER2
8.9–9HSPF2
2 records Check rating scope
WestinghouseHi MULTI Xtreme
18–20SEER2
8.8–8.95HSPF2
2 records Check rating scope
WestinghouseS**SZB2
Air-source heat pumpWHS09SZB21S
22.5SEER2
9HSPF2
1 record View configuration
WestinghouseS**SZB2
Air-source heat pumpWHS18SZB21S
20SEER2
9.8HSPF2
1 record View configuration
WestinghouseS**SZB2
Air-source heat pumpWHS30SZB21S
19SEER2
8HSPF2
1 record View configuration
WestinghouseHi UNI
Air-source heat pumpWHU09SZA21S
18–20.5SEER2
9–10HSPF2
2 records View configuration
WestinghouseHi UNI
Air-source heat pumpWHU12SZA21S
20.5SEER2
9.5HSPF2
1 record View configuration