Thermal Zone heat pumps

35 ENERGY STAR certified Thermal Zone outdoor units (31 central, 4 packaged). The most efficient is the TZID36H520ZC at 20.0 SEER2 and 9.4 HSPF2; 27 models are rated for cold climates.

Some of these units are also certified under Wells, Pioneer, GCHV, MOOVAIR, TRUST AIR CONDITIONERS, DIRECT AIR, CanAir, Elios.

ENERGY STAR data, updated October 12, 2026

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

#		Type						Cold
1	Thermal Zone TZID36H520ZCGT4	Central	3-ton	20.0	13.3	9.4	24,000	Yes	2
2	Thermal Zone TZID18H520ZCSTZID Series	Central	1.5-ton	18.8	11.0	9.1	11,200	No	7
3	Thermal Zone TZID24H520ZCSTZID Series	Central	2-ton	18.4	10.8	9.9	21,600	Yes	56
4	Thermal Zone TZPLV182PABMAH series	Central	1.5-ton	18.0	12.4	9.5	16,500	Yes	2
5	Thermal Zone TZID60H520ZCGT4	Central	5-ton	17.5	11.3	9.0	42,500	Yes	2
6	Thermal Zone TZPLV242PABMAH series	Central	2-ton	17.4	11.7	10.0	22,600	Yes	3
7	Thermal Zone TZID30H520ZCSTZ Series	Central	2.5-ton	17.1	11.0	8.4	19,000	No	15
8	Thermal Zone TZPLV242AAAU Series	Central	2-ton	17.0	10.5	9.2	19,400	Yes	1
9	Thermal Zone TZID48H520ZCSTZID Series	Central	3.5-ton	16.7	10.3	9.0	42,000	Yes	37
10	Thermal Zone TZPLV302PACU series	Central	2.5-ton	16.2	10.0	9.7	27,000	Yes	2
11	Thermal Zone TZID60H520ZCSDRU Series	Central	4-ton	16.2	8.9	8.6	40,000	Yes	9
12	Thermal Zone TZID36H520ZCSTZID Series	Central	3-ton	16.1	10.0	8.7	27,000	Yes	12
13	Thermal Zone TZPLV362PABMAH series	Central	3-ton	16.0	10.0	10.0	34,400	Yes	3
14	Thermal Zone TZP15AZ60AJ2NPerformance	Central	5-ton	16.0	11.7	8.1	30,600	Yes	1
15	Thermal Zone TZP15AY42AJ2NPerformance	Central	3.5-ton	16.0	11.7	8.1	19,300	Yes	56
16	Thermal Zone TZPLAD1518AJNSeries	Central	1.5-ton	16.0	11.7	8.1	9,400	Yes	7
17	Thermal Zone TZPLAD1524AJNCLASSIC PLUS/ACHIEVER PLUS	Central	2-ton	16.0	11.7	8.1	12,600	Yes	7
18	Thermal Zone TZPLAD1530AJNSeries	Central	2.5-ton	16.0	11.7	8.1	16,100	Yes	8
19	Thermal Zone TZPLAD1560AJNSeries	Central	5-ton	16.0	11.7	8.1	33,600	Yes	2
20	Thermal Zone TZPLV482PATZP Series	Central	4-ton	15.6	8.2	9.4	46,500	Yes	2
21	Thermal Zone TZPLV602PACU series	Central	5-ton	15.3	8.8	9.4	48,500	Yes	1
22	Thermal Zone TZP15AZ48AJ2NF-SERIES PLUS	Central	4-ton	15.2	11.7	8.1	24,200	Yes	1
23	Thermal Zone TZPLAD1536AJNF Series	Central	3-ton	15.2	11.7	8.1	19,400	Yes	2
24	Thermal Zone TZPLAD1548AJNF Series	Central	4-ton	15.2	11.7	8.1	27,200	Yes	2
25	Thermal Zone TZP15AY18AJ2NElite	Central	1.5-ton	15.2	11.7	8.1	8,600	Yes	1
26	Thermal Zone TZP15AZ42AJ2NPerformance	Central	3.5-ton	15.2	11.7	8.1	20,400	Yes	1
27	Thermal Zone TZP15AZ18AJ2NSeries	Central	1.5-ton	15.2	11.7	8.1	9,400	Yes	6
28	Thermal Zone TZP15AZ24AJ2NSeries	Central	2-ton	15.2	11.7	8.1	12,600	Yes	6
29	Thermal Zone TZP15AZ30AJ2NSeries	Central	2.5-ton	15.2	11.7	8.1	16,100	Yes	7
30	Thermal Zone TZP15AY36AJ2NElite	Central	3-ton	15.2	11.7	7.8	18,500	No	1
31	Thermal Zone TZP15AZ36AJ2NPerformance	Central	3-ton	15.2	11.7	7.8	17,500	No	1
32	Thermal Zone RHPXYC036AJTRHPXYC	Packaged	3-ton	15.2	11.5	7.2	13,800	No	7
33	Thermal Zone RHPXYC048AJTRHPXYC	Packaged	4-ton	15.2	11.5	7.2	18,000	No	7
34	Thermal Zone RHPXYC060AJTRHPXYC	Packaged	5-ton	15.2	11.5	7.2	25,000	No	7
35	Thermal Zone RHPXYC024AJTRHPXYC	Packaged	2-ton	15.2	11.5	7.2	14,000	No	9