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Thermal Zone heat pumps

35 certified models, ranked by seasonal cooling efficiency (SEER2), then heating efficiency (HSPF2), highest first.

Filters Thermal Zone
  1. 1 TZID36H520ZCThermal Zone
    24,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Central · 5°F 20,000 Btu/h · Cold output 70–83% · HSPF2 9.2 · 2 pairings

  2. 2 TZID60H520ZCThermal Zone
    48,000 Btu/hheating at 47°F 47,500 Btu/hcooling at 95°F

    48,000 Btu (4-ton) · Central · 5°F 34,200 Btu/h · Cold output 71–75% · HSPF2 8.8 · 2 pairings

  3. 3 TZPLV182PAThermal Zone
    19,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Central · 5°F 15,000 Btu/h · Cold output 79–87% · HSPF2 9.4 · 2 pairings

  4. 4 TZPLV242AAThermal Zone
    26,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Central · 5°F 19,400 Btu/h · Cold output 75% · HSPF2 9.2 · 1 pairing

  5. 5 TZID24H520ZCSThermal Zone
    24,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Central · 5°F 20,000 Btu/h · Cold output 76–88% · HSPF2 9.1 · 56 pairings

  6. 6 TZPLV242PAThermal Zone
    25,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Central · 5°F 20,000 Btu/h · Cold output 80–94% · HSPF2 9.8 · 3 pairings

  7. 7 TZID18H520ZCSThermal Zone
    18,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Central · 5°F 10,000 Btu/h · Cold output 53–62% · HSPF2 8.3 · 7 pairings

  8. 8 TZP15AZ60AJ2NThermal Zone
    57,000 Btu/hheating at 47°F 57,000 Btu/hcooling at 95°F

    54,000 Btu (4.5-ton) · Central · 5°F 30,600 Btu/h · Cold output 54% · HSPF2 8.1 · 1 pairing

  9. 9 TZID48H520ZCSThermal Zone
    44,000 Btu/hheating at 47°F 44,000 Btu/hcooling at 95°F

    42,000 Btu (3.5-ton) · Central · 5°F 39,000 Btu/h · Cold output 79–93% · HSPF2 8.3 · 37 pairings

  10. 10 TZID30H520ZCSThermal Zone
    29,000 Btu/hheating at 47°F 29,000 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Central · 5°F 18,000 Btu/h · Cold output 62–66% · HSPF2 8.2 · 15 pairings

  11. 11 TZPLV302PAThermal Zone
    33,000 Btu/hheating at 47°F 30,000 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Central · 5°F 24,000 Btu/h · Cold output 73–82% · HSPF2 9.3 · 2 pairings

  12. 12 TZID60H520ZCSThermal Zone
    47,000 Btu/hheating at 47°F 51,000 Btu/hcooling at 95°F

    48,000 Btu (4-ton) · Central · 5°F 38,000 Btu/h · Cold output 70–83% · HSPF2 8.4 · 9 pairings

  13. 13 TZPLAD1560AJNThermal Zone
    57,000 Btu/hheating at 47°F 57,000 Btu/hcooling at 95°F

    54,000 Btu (4.5-ton) · Central · 5°F 30,600 Btu/h · Cold output 54–59% · HSPF2 8.1 · 2 pairings

  14. 14 TZID36H520ZCSThermal Zone
    36,000 Btu/hheating at 47°F 35,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Central · 5°F 26,000 Btu/h · Cold output 72–75% · HSPF2 8.5 · 12 pairings

  15. 15 TZPLV362PAThermal Zone
    39,000 Btu/hheating at 47°F 35,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Central · 5°F 32,000 Btu/h · Cold output 82–86% · HSPF2 9.5 · 3 pairings

  16. 16 TZPLV482PAThermal Zone
    50,000 Btu/hheating at 47°F 47,000 Btu/hcooling at 95°F

    42,000 Btu (3.5-ton) · Central · 5°F 46,000 Btu/h · Cold output 85–92% · HSPF2 9.3 · 2 pairings

  17. 17 TZPLV602PAThermal Zone
    59,000 Btu/hheating at 47°F 55,000 Btu/hcooling at 95°F

    54,000 Btu (4.5-ton) · Central · 5°F 48,500 Btu/h · Cold output 82% · HSPF2 9.4 · 1 pairing

  18. 18 TZP15AZ48AJ2NThermal Zone
    45,000 Btu/hheating at 47°F 45,500 Btu/hcooling at 95°F

    48,000 Btu (4-ton) · Central · 5°F 24,200 Btu/h · Cold output 54% · HSPF2 8.1 · 1 pairing

  19. 19 TZPLAD1548AJNThermal Zone
    45,000 Btu/hheating at 47°F 45,500 Btu/hcooling at 95°F

    48,000 Btu (4-ton) · Central · 5°F 24,200 Btu/h · Cold output 54–60% · HSPF2 8.1 · 2 pairings

  20. 20 TZP15AZ42AJ2NThermal Zone
    39,500 Btu/hheating at 47°F 40,000 Btu/hcooling at 95°F

    42,000 Btu (3.5-ton) · Central · 5°F 20,400 Btu/h · Cold output 52% · HSPF2 8.1 · 1 pairing

  21. 21 TZP15AY42AJ2NThermal Zone
    40,000 Btu/hheating at 47°F 40,000 Btu/hcooling at 95°F

    42,000 Btu (3.5-ton) · Central · 5°F 18,900 Btu/h · Cold output 47–48% · HSPF2 8.1 · 56 pairings

  22. 22 TZP15AZ30AJ2NThermal Zone
    28,400 Btu/hheating at 47°F 28,400 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Central · 5°F 16,000 Btu/h · Cold output 55–57% · HSPF2 8.1 · 7 pairings

  23. 23 TZPLAD1530AJNThermal Zone
    28,400 Btu/hheating at 47°F 28,400 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Central · 5°F 15,900 Btu/h · Cold output 50–57% · HSPF2 8.1 · 8 pairings

  24. 24 TZP15AZ24AJ2NThermal Zone
    22,800 Btu/hheating at 47°F 22,800 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Central · 5°F 12,600 Btu/h · Cold output 52–55% · HSPF2 8.1 · 6 pairings

  25. 25 TZPLAD1524AJNThermal Zone
    22,800 Btu/hheating at 47°F 22,800 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Central · 5°F 12,600 Btu/h · Cold output 52–55% · HSPF2 8.1 · 7 pairings

  26. 26 TZP15AY18AJ2NThermal Zone
    17,100 Btu/hheating at 47°F 17,100 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Central · 5°F 8,600 Btu/h · Cold output 50% · HSPF2 8.1 · 1 pairing

  27. 27 TZPLAD1536AJNThermal Zone
    34,200 Btu/hheating at 47°F 34,200 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Central · 5°F 17,500 Btu/h · Cold output 51–57% · HSPF2 7.9 · 2 pairings

  28. 28 TZP15AY36AJ2NThermal Zone
    34,200 Btu/hheating at 47°F 34,200 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Central · 5°F 18,500 Btu/h · Cold output 54% · HSPF2 7.8 · 1 pairing

  29. 29 TZP15AZ36AJ2NThermal Zone
    34,200 Btu/hheating at 47°F 34,200 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Central · 5°F 17,500 Btu/h · Cold output 51% · HSPF2 7.8 · 1 pairing

  30. 30 TZP15AZ18AJ2NThermal Zone
    17,100 Btu/hheating at 47°F 17,100 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Central · 5°F 9,300 Btu/h · Cold output 54–55% · HSPF2 7.8 · 6 pairings

  31. 31 TZPLAD1518AJNThermal Zone
    17,100 Btu/hheating at 47°F 17,100 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Central · 5°F 9,300 Btu/h · Cold output 48–55% · HSPF2 7.8 · 7 pairings

  32. 32 RHPXYC060AJTFriedrich, Mainline + 5 more
    55,500 Btu/hheating at 47°F 57,000 Btu/hcooling at 95°F

    54,000 Btu (4.5-ton) · Central · 5°F 25,000 Btu/h · Cold output 45% · HSPF2 7.2 · 7 pairings

  33. 33 RHPXYC048AJTFriedrich, Mainline + 5 more
    45,500 Btu/hheating at 47°F 45,500 Btu/hcooling at 95°F

    48,000 Btu (4-ton) · Central · 5°F 18,000 Btu/h · Cold output 40% · HSPF2 7.2 · 7 pairings

  34. 34 RHPXYC024AJTDuraSTAR, Friedrich + 7 more
    32,000 Btu/hheating at 47°F 22,800 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Central · 5°F 14,000 Btu/h · Cold output 44% · HSPF2 7.2 · 9 pairings

  35. 35 RHPXYC036AJTFriedrich, Mainline + 5 more
    34,200 Btu/hheating at 47°F 34,200 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Central · 5°F 13,800 Btu/h · Cold output 40% · HSPF2 7.2 · 7 pairings

Thermal Zone heat pumps, ranked by seasonal cooling efficiency (SEER2), then heating efficiency (HSPF2)
# Model Brands Type Size At 5°FBtu/h · heating At 47°FBtu/h · heating At 95°FBtu/h · cooling Cold output% of 47°F rating COP 5°Ffull speed SEER2median pairing HSPF2Btu/Wh · median pairing Compressor Refrigerant Market Pairings
1 TZID36H520ZC Thermal Zone Central 24,000 Btu (2-ton)20,000 24,000 24,000 70–83% 2.10 19.3 9.2 Variable R-454B US 2
2 TZID60H520ZC Thermal Zone Central 48,000 Btu (4-ton)34,200 48,000 47,500 71–75% 2.10 17.3 8.8 Variable R-454B US 2
3 TZPLV182PA Thermal Zone Central 18,000 Btu (1.5-ton)15,000 19,000 18,000 79–87% 2.12 17.1 9.4 Variable R-410A US CA 2
4 TZPLV242AA Thermal Zone Central 24,000 Btu (2-ton)19,400 26,000 24,000 75% 2.10 17.0 9.2 Variable R-410A US CA 1
5 TZID24H520ZCS Thermal Zone Central 24,000 Btu (2-ton)20,000 24,000 24,000 76–88% 1.80 16.6 9.1 Variable R-454B US CA 56
6 TZPLV242PA Thermal Zone Central 24,000 Btu (2-ton)20,000 25,000 24,000 80–94% 1.95 16.5 9.8 Variable R-410A US CA 3
7 TZID18H520ZCS Thermal Zone Central 18,000 Btu (1.5-ton)10,000 18,000 18,000 53–62% 1.90 16.4 8.3 Variable R-454B US CA 7
8 TZP15AZ60AJ2N Thermal Zone Central 54,000 Btu (4.5-ton)30,600 57,000 57,000 54% 2.30 16.0 8.1 2-stage R-410A US CA 1
9 TZID48H520ZCS Thermal Zone Central 42,000 Btu (3.5-ton)39,000 44,000 44,000 79–93% 1.80 15.9 8.3 Variable R-454B US CA 37
10 TZID30H520ZCS Thermal Zone Central 30,000 Btu (2.5-ton)18,000 29,000 29,000 62–66% 1.80 15.9 8.2 Variable R-454B US CA 15
11 TZPLV302PA Thermal Zone Central 30,000 Btu (2.5-ton)24,000 33,000 30,000 73–82% 1.83 15.9 9.3 Variable R-410A US CA 2
12 TZID60H520ZCS Thermal Zone Central 48,000 Btu (4-ton)38,000 47,000 51,000 70–83% 1.80 15.7 8.4 Variable R-454B US CA 9
13 TZPLAD1560AJN Thermal Zone Central 54,000 Btu (4.5-ton)30,600 57,000 57,000 54–59% 2.40 15.6 8.1 2-stage R-410A US CA 2
14 TZID36H520ZCS Thermal Zone Central 36,000 Btu (3-ton)26,000 36,000 35,000 72–75% 1.80 15.6 8.5 Variable R-454B US CA 12
15 TZPLV362PA Thermal Zone Central 36,000 Btu (3-ton)32,000 39,000 35,000 82–86% 1.97 15.5 9.5 Variable R-410A US CA 3
16 TZPLV482PA Thermal Zone Central 42,000 Btu (3.5-ton)46,000 50,000 47,000 85–92% 1.85 15.4 9.3 Variable R-410A US CA 2
17 TZPLV602PA Thermal Zone Central 54,000 Btu (4.5-ton)48,500 59,000 55,000 82% 1.91 15.3 9.4 Variable R-410A US CA 1
18 TZP15AZ48AJ2N Thermal Zone Central 48,000 Btu (4-ton)24,200 45,000 45,500 54% 2.20 15.2 8.1 2-stage R-410A US CA 1
19 TZPLAD1548AJN Thermal Zone Central 48,000 Btu (4-ton)24,200 45,000 45,500 54–60% 2.35 15.2 8.1 2-stage R-410A US CA 2
20 TZP15AZ42AJ2N Thermal Zone Central 42,000 Btu (3.5-ton)20,400 39,500 40,000 52% 2.10 15.2 8.1 2-stage R-410A US CA 1
21 TZP15AY42AJ2N Thermal Zone Central 42,000 Btu (3.5-ton)18,900 40,000 40,000 47–48% 2.00 15.2 8.1 2-stage R-454B US 56
22 TZP15AZ30AJ2N Thermal Zone Central 30,000 Btu (2.5-ton)16,000 28,400 28,400 55–57% 2.10 15.2 8.1 2-stage R-410A US CA 7
23 TZPLAD1530AJN Thermal Zone Central 30,000 Btu (2.5-ton)15,900 28,400 28,400 50–57% 2.10 15.2 8.1 2-stage R-410A US CA 8
24 TZP15AZ24AJ2N Thermal Zone Central 24,000 Btu (2-ton)12,600 22,800 22,800 52–55% 2.20 15.2 8.1 2-stage R-410A US CA 6
25 TZPLAD1524AJN Thermal Zone Central 24,000 Btu (2-ton)12,600 22,800 22,800 52–55% 2.20 15.2 8.1 2-stage R-410A US CA 7
26 TZP15AY18AJ2N Thermal Zone Central 18,000 Btu (1.5-ton)8,600 17,100 17,100 50% 2.00 15.2 8.1 2-stage R-454B US 1
27 TZPLAD1536AJN Thermal Zone Central 36,000 Btu (3-ton)17,500 34,200 34,200 51–57% 2.15 15.2 7.9 2-stage R-410A US CA 2
28 TZP15AY36AJ2N Thermal Zone Central 36,000 Btu (3-ton)18,500 34,200 34,200 54% 2.00 15.2 7.8 2-stage R-454B US 1
29 TZP15AZ36AJ2N Thermal Zone Central 36,000 Btu (3-ton)17,500 34,200 34,200 51% 2.00 15.2 7.8 2-stage R-410A US CA 1
30 TZP15AZ18AJ2N Thermal Zone Central 18,000 Btu (1.5-ton)9,300 17,100 17,100 54–55% 2.10 15.2 7.8 2-stage R-410A US CA 6
31 TZPLAD1518AJN Thermal Zone Central 18,000 Btu (1.5-ton)9,300 17,100 17,100 48–55% 2.10 15.2 7.8 2-stage R-410A US CA 7
32 RHPXYC060AJT Friedrich, Mainline + 5 more Central 54,000 Btu (4.5-ton)25,000 55,500 57,000 45% 1.60 15.2 7.2 2-stage R-454B US CA 7
33 RHPXYC048AJT Friedrich, Mainline + 5 more Central 48,000 Btu (4-ton)18,000 45,500 45,500 40% 1.44 15.2 7.2 2-stage R-454B US CA 7
34 RHPXYC024AJT DuraSTAR, Friedrich + 7 more Central 24,000 Btu (2-ton)14,000 32,000 22,800 44% 1.70 15.2 7.2 2-stage R-454B US CA 9
35 RHPXYC036AJT Friedrich, Mainline + 5 more Central 36,000 Btu (3-ton)13,800 34,200 34,200 40% 1.80 15.2 7.2 2-stage R-454B US CA 7

The share is heat output at 5°F divided by the 47°F rating. Tests use different compressor speeds.

35 of 35 units

Other sizes

Every size class, with how many units it holds and its median heat output at 5°F