WeatherKing heat pumps

20 ENERGY STAR certified WeatherKing outdoor units (16 central, 4 packaged). The most efficient is the WP15AY48AJ2N at 16.0 SEER2 and 8.1 HSPF2; 9 models are rated for cold climates.

Some of these units are also certified under Ruud, Fujitsu, Rheem, RUSSELL, Sure, Friedrich.

ENERGY STAR data, updated October 12, 2026

20 models, ranked by SEER2 (cooling efficiency), then HSPF2.

#		Type						Cold
1	WeatherKing WP15AY48AJ2NW Series	Central	4-ton	16.0	11.7	8.1	23,400	Yes	8
2	WeatherKing WP15AZ60AJ2NW Series	Central	5-ton	16.0	11.7	8.1	30,600	Yes	8
3	WeatherKing WP15AY42AJ2NVERSUS	Central	3.5-ton	16.0	11.7	8.1	21,000	Yes	328
4	WeatherKing WP15AZ18AJ2NW Series	Central	1.5-ton	16.0	11.7	8.1	9,500	Yes	55
5	WeatherKing WP15AZ24AJ2NW Series	Central	2-ton	16.0	11.7	8.1	13,200	Yes	78
6	WeatherKing WP15AZ30AJ2NW Series	Central	2.5-ton	16.0	11.7	8.1	16,100	Yes	82
7	WeatherKing WP15AY36AJ2NW Series	Central	3-ton	16.0	12.0	7.8	18,900	No	311
8	WeatherKing WP15AY18AJ2NVERSUS	Central	1.5-ton	15.2	11.7	8.1	8,600	Yes	12
9	WeatherKing WP15AZ42AJ2NW Series	Central	3.5-ton	15.2	11.7	8.1	20,400	Yes	10
10	WeatherKing WP15AZ48AJ2NW Series	Central	4-ton	15.2	11.7	8.1	24,200	Yes	10
11	WeatherKing WP15AZ36AJ2NW Series	Central	3-ton	15.2	11.7	8.1	19,600	No	14
12	WeatherKing WP15AY24AJ2NW Series	Central	2-ton	15.2	11.7	7.8	11,200	No	11
13	WeatherKing WP15AY30AJ2NVERSUS	Central	2.5-ton	15.2	11.7	7.8	14,600	No	8
14	WeatherKing WP14AY42AJ2NVERSUS	Central	3.5-ton	15.2	11.7	7.8	19,900	No	28
15	WeatherKing WP14AY60AJ2NVERSUS	Central	5-ton	15.2	11.7	7.8	27,800	No	43
16	WeatherKing WP15AY60AJ2NW Series	Central	5-ton	15.2	11.7	7.8	-	No	35
17	WeatherKing RHPXZS024AJTRHPXZS	Packaged	2-ton	15.2	11.5	7.2	-	No	6
18	WeatherKing RHPXZS036AJTRHPXZS	Packaged	3-ton	15.2	11.5	7.2	-	No	6
19	WeatherKing RHPXZS048AJTRHPXZS	Packaged	4-ton	15.2	11.5	7.2	-	No	6
20	WeatherKing RHPXZS060AJTRHPXZS	Packaged	5-ton	15.2	11.5	7.2	-	No	6