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Zero heat pumps

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

Filters Zero
  1. 1 ZMSB-09HV-USHHCZero
    12,000 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 11,000 Btu/h · Cold output 92% · HSPF2 11.6 · 1 pairing

  2. 2 ZMSB-09HV-USHHC-OZero
    12,000 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 11,000 Btu/h · Cold output 92% · HSPF2 11.6 · 1 pairing

  3. 3 ZMSB-09HV-USHHCR2-OZero
    12,000 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 11,500 Btu/h · Cold output 96% · HSPF2 12.5 · 1 pairing

  4. 4 ZMSB-12HVT-USHHCR2Zero
    12,000 Btu/hheating at 47°F 12,000 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 12,000 Btu/h · Cold output 100% · HSPF2 10.5 · 1 pairing

  5. 5 ZMSB-09HVT-USHHCR2Zero
    9,000 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 9,100 Btu/h · Cold output 101% · HSPF2 10.5 · 1 pairing

  6. 6 Z2SOV-18HDTA-US-OZero
    18,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 14,000 Btu/h · Cold output 78% · HSPF2 10.0 · 1 pairing

  7. 7 ZMSB-09HV-USHHR2-OZero
    10,000 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 8,200 Btu/h · Cold output 82–83% · HSPF2 13.0 · 3 pairings

  8. 8 ZMSB-09HV-USHHZero
    10,000 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 7,500 Btu/h · Cold output 75% · HSPF2 11.6 · 1 pairing

  9. 9 ZMSB-18HV-USHHR2-OZero
    18,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 13,000 Btu/h · Cold output 71–72% · HSPF2 11.1 · 3 pairings

  10. 10 ZMSB-18HV-USHHZero
    18,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 12,800 Btu/h · Cold output 71% · HSPF2 10.5 · 1 pairing

  11. 11 ZMSB-12HV-USHHCR2-OZero
    12,000 Btu/hheating at 47°F 12,000 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 11,500 Btu/h · Cold output 96% · HSPF2 10.5 · 1 pairing

  12. 12 Z5SOV-42HDTA-US-OZero
    42,000 Btu/hheating at 47°F 42,000 Btu/hcooling at 95°F

    42,000 Btu (3.5-ton) · Mini-split · 5°F 31,000 Btu/h · Cold output 74% · HSPF2 10.0 · 1 pairing

  13. 13 ZMSB-18HVT-USR1-S24-OZero
    18,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 15,000 Btu/h · Cold output 83% · HSPF2 10.0 · 1 pairing

  14. 14 ZMSB-12HVT-USR1-S24-OZero
    12,000 Btu/hheating at 47°F 12,000 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 10,000 Btu/h · Cold output 83% · HSPF2 10.0 · 1 pairing

  15. 15 ZMSB-12HVT110-USR1-S24-OZero
    12,000 Btu/hheating at 47°F 12,000 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 10,000 Btu/h · Cold output 83% · HSPF2 10.0 · 1 pairing

  16. 16 ZMSB-12HVT-USHHR2Zero
    12,600 Btu/hheating at 47°F 12,000 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 9,100 Btu/h · Cold output 72% · HSPF2 10.0 · 1 pairing

  17. 17 ZMSB-18HVT-USHHCR2Zero
    18,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 17,800 Btu/h · Cold output 99% · HSPF2 10.0 · 2 pairings

  18. 18 ZMSB-24HV-USHHR2-OZero
    25,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 17,800 Btu/h · Cold output 71–74% · HSPF2 10.0 · 3 pairings

  19. 19 ZMSB-12HV110-USHHR2-OZero
    12,000 Btu/hheating at 47°F 12,000 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 7,300 Btu/h · Cold output 61% · HSPF2 10.4 · 1 pairing

  20. 20 ZMSB-12HV-USHHR2-OZero
    12,000 Btu/hheating at 47°F 12,000 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 8,600 Btu/h · Cold output 70–72% · HSPF2 11.5 · 3 pairings

  21. 21 ZMSB-12HV-USHHZero
    12,000 Btu/hheating at 47°F 12,000 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 8,400 Btu/h · Cold output 70% · HSPF2 10.8 · 1 pairing

  22. 22 ZMSB-12HV-USHHCZero
    12,000 Btu/hheating at 47°F 12,000 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 11,000 Btu/h · Cold output 92% · HSPF2 10.5 · 1 pairing

  23. 23 ZMSB-12HV-USHHC-OZero
    12,000 Btu/hheating at 47°F 12,000 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 11,000 Btu/h · Cold output 92% · HSPF2 10.5 · 1 pairing

  24. 24 Z4SOV-36HDTA-US-OZero
    42,000 Btu/hheating at 47°F 38,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Mini-split · 5°F 31,000 Btu/h · Cold output 74% · HSPF2 10.0 · 1 pairing

  25. 25 ZMSB-24HVT-USR1-S23-OZero
    24,000 Btu/hheating at 47°F 23,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 17,500 Btu/h · Cold output 73% · HSPF2 10.0 · 1 pairing

  26. 26 ZMSB-18HVT-USHHR2Zero
    19,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 13,600 Btu/h · Cold output 72% · HSPF2 10.0 · 1 pairing

  27. 27 ZMSB-12HVT110-USHHR2Zero
    12,400 Btu/hheating at 47°F 12,000 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 8,900 Btu/h · Cold output 72% · HSPF2 10.0 · 1 pairing

  28. 28 ZMSB-09HVT110-USR1-S23-OZero
    9,000 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 8,000 Btu/h · Cold output 89% · HSPF2 10.0 · 1 pairing

  29. 29 ZMSB-24HVT-USHHR2Zero
    25,000 Btu/hheating at 47°F 23,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 18,600 Btu/h · Cold output 74% · HSPF2 9.5 · 1 pairing

  30. 30 ZMSB-09HVT-USR1-S23-OZero
    9,000 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 8,000 Btu/h · Cold output 89% · HSPF2 9.5 · 1 pairing

  31. 31 ZMSB-09HVT-USHHR2Zero
    10,000 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 7,100 Btu/h · Cold output 71% · HSPF2 9.5 · 1 pairing

  32. 32 ZMSB-09HVT110-USHHR2Zero
    10,000 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 7,100 Btu/h · Cold output 71% · HSPF2 9.5 · 1 pairing

  33. 33 ZMSB-24HVT-USHHCR2Zero
    24,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 22,400 Btu/h · Cold output 93% · HSPF2 10.0 · 1 pairing

  34. 34 Z3SOV-27HDTB-USZero
    27,000 Btu/hheating at 47°F 27,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 18,900 Btu/h · Cold output 70–71% · HSPF2 9.8 · 2 pairings

  35. 35 ZMSB-24HV-USHHCR2-OZero
    26,000 Btu/hheating at 47°F 23,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 24,000 Btu/h · Cold output 92% · HSPF2 13.3 · 1 pairing

  36. 36 ZMSB-24HV-USHHCZero
    26,000 Btu/hheating at 47°F 23,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 23,000 Btu/h · Cold output 88% · HSPF2 10.3 · 1 pairing

  37. 37 ZMSB-24HV-USHHC-OZero
    26,000 Btu/hheating at 47°F 23,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 23,000 Btu/h · Cold output 88% · HSPF2 10.3 · 1 pairing

  38. 38 ZMSB-30HV-USR2-OZero
    30,000 Btu/hheating at 47°F 30,000 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Mini-split · 5°F 20,000 Btu/h · Cold output 67% · HSPF2 9.0 · 1 pairing

  39. 39 Z3SOV-27HDM-USZero
    28,000 Btu/hheating at 47°F 27,400 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Mini-split · 5°F 18,800 Btu/h · Cold output 67–68% · HSPF2 9.2 · 3 pairings

  40. 40 ZMSB-18HV-USHHCZero
    18,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 17,200 Btu/h · Cold output 96% · HSPF2 10.6 · 1 pairing

  41. 41 ZMSB-18HV-USHHC-OZero
    18,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 17,200 Btu/h · Cold output 96% · HSPF2 10.6 · 1 pairing

  42. 42 Z3SOV-27HDTA-US-OZero
    28,000 Btu/hheating at 47°F 28,000 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Mini-split · 5°F 21,000 Btu/h · Cold output 75% · HSPF2 10.0 · 1 pairing

  43. 43 Z2SOV-18HDTB-USZero
    19,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 15,000 Btu/h · Cold output 79–80% · HSPF2 9.8 · 2 pairings

  44. 44 Z4SOV-27HDMB-USZero
    26,800 Btu/hheating at 47°F 26,200 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 18,900 Btu/h · Cold output 70–71% · HSPF2 9.3 · 3 pairings

  45. 45 ZMSB-18HV-USHHCR2-OZero
    18,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 18,000 Btu/h · Cold output 100% · HSPF2 10.8 · 1 pairing

  46. 46 ZMSB-09HVD-USZero
    10,000 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 7,000 Btu/h · Cold output 70% · HSPF2 9.4 · 1 pairing

  47. 47 ZMSB-09HV-USR2-OZero
    10,000 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 7,000 Btu/h · Cold output 70% · HSPF2 9.4 · 1 pairing

  48. 48 Z4SOV-36HDMB-USZero
    37,000 Btu/hheating at 47°F 35,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Mini-split · 5°F 26,000 Btu/h · Cold output 70% · HSPF2 9.6 · 3 pairings

  49. 49 Z5SOV-36HDMB-USZero
    37,000 Btu/hheating at 47°F 35,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Mini-split · 5°F 26,000 Btu/h · Cold output 70% · HSPF2 9.6 · 3 pairings

  50. 50 Z4SOV-36HDTB-USZero
    35,000 Btu/hheating at 47°F 34,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Mini-split · 5°F 25,000 Btu/h · Cold output 71–72% · HSPF2 10.3 · 2 pairings

  51. 51 Z3SOV-18HDMB-USZero
    19,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 14,000 Btu/h · Cold output 71–77% · HSPF2 10.0 · 3 pairings

  52. 52 Z4SOV-18HDMB-USZero
    19,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 14,000 Btu/h · Cold output 71–77% · HSPF2 10.0 · 3 pairings

  53. 53 ZMSB-09HVD110-USZero
    10,000 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 7,000 Btu/h · Cold output 70% · HSPF2 9.1 · 1 pairing

  54. 54 ZMSB-09HV110-USR2-OZero
    10,000 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 7,000 Btu/h · Cold output 70% · HSPF2 9.0 · 1 pairing

  55. 55 Z5SOV-48HDM-USZero
    49,000 Btu/hheating at 47°F 47,500 Btu/hcooling at 95°F

    48,000 Btu (4-ton) · Mini-split · 5°F 43,500 Btu/h · Cold output 87–92% · HSPF2 9.4 · 3 pairings

  56. 56 ZMSB-24HV-USHHZero
    26,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 16,700 Btu/h · Cold output 64% · HSPF2 8.5 · 1 pairing

  57. 57 ZMSB-30HVD-USZero
    30,000 Btu/hheating at 47°F 30,000 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Mini-split · 5°F 18,400 Btu/h · Cold output 61% · HSPF2 8.2 · 1 pairing

  58. 58 Z4SOV-48HDMB-USZero
    47,500 Btu/hheating at 47°F 45,000 Btu/hcooling at 95°F

    42,000 Btu (3.5-ton) · Mini-split · 5°F 37,000 Btu/h · Cold output 75–81% · HSPF2 10.3 · 3 pairings

  59. 59 Z6SOV-48HDMB-USZero
    47,500 Btu/hheating at 47°F 45,000 Btu/hcooling at 95°F

    42,000 Btu (3.5-ton) · Mini-split · 5°F 37,000 Btu/h · Cold output 75–81% · HSPF2 10.3 · 3 pairings

  60. 60 Z4SOV-48HDMB-USHHZero
    48,000 Btu/hheating at 47°F 47,000 Btu/hcooling at 95°F

    48,000 Btu (4-ton) · Mini-split · 5°F 48,000 Btu/h · Cold output 98–100% · HSPF2 10.6 · 3 pairings

  61. 61 Z5SOV-42HDTB-USZero
    42,000 Btu/hheating at 47°F 42,000 Btu/hcooling at 95°F

    42,000 Btu (3.5-ton) · Mini-split · 5°F 30,000 Btu/h · Cold output 71–79% · HSPF2 9.5 · 2 pairings

  62. 62 Z4SOV-53HDMB-USHHZero
    55,000 Btu/hheating at 47°F 51,000 Btu/hcooling at 95°F

    54,000 Btu (4.5-ton) · Mini-split · 5°F 48,000 Btu/h · Cold output 87% · HSPF2 10.7 · 3 pairings

  63. 63 Z4SOV-18HDMB-USHHZero
    20,000 Btu/hheating at 47°F 19,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 18,000 Btu/h · Cold output 90% · HSPF2 10.0 · 3 pairings

  64. 64 Z4SOV-36HDMB-USHHZero
    36,000 Btu/hheating at 47°F 36,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Mini-split · 5°F 37,400 Btu/h · Cold output 103–106% · HSPF2 10.9 · 3 pairings

  65. 65 ZMSB-18HV-USR2-OZero
    18,800 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 11,500 Btu/h · Cold output 61% · HSPF2 9.1 · 1 pairing

  66. 66 ZMSB-33HV-USHHCR2-OZero
    36,000 Btu/hheating at 47°F 33,000 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Mini-split · 5°F 34,600 Btu/h · Cold output 96% · HSPF2 10.5 · 2 pairings

  67. 67 Z3SOV-18HDM-USZero
    19,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 12,900 Btu/h · Cold output 66–70% · HSPF2 10.0 · 3 pairings

  68. 68 Z4SOV-27HDMB-USHHZero
    27,000 Btu/hheating at 47°F 27,000 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Mini-split · 5°F 27,000 Btu/h · Cold output 96–100% · HSPF2 9.8 · 3 pairings

  69. 69 Z4SOV-36HDM-USZero
    37,000 Btu/hheating at 47°F 36,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Mini-split · 5°F 24,000 Btu/h · Cold output 65% · HSPF2 9.2 · 1 pairing

  70. 70 ZMSB-18HV-US-OZero
    18,800 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 11,700 Btu/h · Cold output 62% · HSPF2 8.7 · 1 pairing

  71. 71 ZMSB-18HVD-USZero
    18,800 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 11,700 Btu/h · Cold output 62% · HSPF2 8.7 · 1 pairing

  72. 72 ZSOV-24HDM-USZero
    24,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 18,200 Btu/h · Cold output 56–80% · HSPF2 10.3 · 3 pairings

  73. 73 ZSOVA-18HDMB-USHHZero
    19,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Central · 5°F 18,000 Btu/h · Cold output 95% · HSPF2 9.7 · 1 pairing

  74. 74 ZOV-36HDTBZero
    34,000 Btu/hheating at 47°F 34,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Central · 5°F 26,000 Btu/h · Cold output 76% · HSPF2 9.0 · 1 pairing

  75. 75 ZSOV-48HDM-USZero
    50,000 Btu/hheating at 47°F 48,000 Btu/hcooling at 95°F

    48,000 Btu (4-ton) · Mini-split · 5°F 35,000 Btu/h · Cold output 70% · HSPF2 10.0 · 1 pairing

  76. 76 ZSOVA-18HDMB-USZero
    18,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Central · 5°F 11,200 Btu/h · Cold output 62% · HSPF2 9.1 · 1 pairing

  77. 77 ZMSB-24HV-USR2-OZero
    24,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 17,000 Btu/h · Cold output 71% · HSPF2 9.0 · 1 pairing

  78. 78 ZSOVA-24HDMB-USHHZero
    24,000 Btu/hheating at 47°F 23,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Central · 5°F 21,600 Btu/h · Cold output 90% · HSPF2 10.0 · 1 pairing

  79. 79 ZSOVA-24HDMB-USZero
    26,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Central · 5°F 21,600 Btu/h · Cold output 83% · HSPF2 9.7 · 1 pairing

  80. 80 ZOV-24HDTBZero
    24,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Central · 5°F 18,000 Btu/h · Cold output 75% · HSPF2 9.0 · 1 pairing

  81. 81 ZOV-48HDTBZero
    47,000 Btu/hheating at 47°F 47,000 Btu/hcooling at 95°F

    48,000 Btu (4-ton) · Central · 5°F 33,000 Btu/h · Cold output 70% · HSPF2 8.5 · 1 pairing

  82. 82 ZSOU-24HDG-HYPERZero
    25,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Central · 5°F 14,000 Btu/h · Cold output 56% · HSPF2 8.1 · 1 pairing

  83. 83 ZSOVA-36HDMB-USHHZero
    37,000 Btu/hheating at 47°F 36,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Central · 5°F 39,000 Btu/h · Cold output 105% · HSPF2 10.3 · 1 pairing

  84. 84 ZOV-60HDTBZero
    53,000 Btu/hheating at 47°F 53,000 Btu/hcooling at 95°F

    54,000 Btu (4.5-ton) · Central · 5°F 38,000 Btu/h · Cold output 72% · HSPF2 8.2 · 1 pairing

  85. 85 ZSOVA-30HDMB-USHHZero
    34,000 Btu/hheating at 47°F 30,000 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Central · 5°F 32,600 Btu/h · Cold output 96% · HSPF2 10.0 · 1 pairing

  86. 86 ZSOVA-48HDMB-USHHZero
    50,000 Btu/hheating at 47°F 48,000 Btu/hcooling at 95°F

    48,000 Btu (4-ton) · Central · 5°F 46,000 Btu/h · Cold output 92% · HSPF2 9.5 · 1 pairing

  87. 87 ZSOVA-36HDMB-USZero
    36,000 Btu/hheating at 47°F 36,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Central · 5°F 27,000 Btu/h · Cold output 75% · HSPF2 8.7 · 1 pairing

  88. 88 ZSOVA-60HDMB-USHHZero
    56,000 Btu/hheating at 47°F 54,000 Btu/hcooling at 95°F

    54,000 Btu (4.5-ton) · Central · 5°F 52,000 Btu/h · Cold output 93% · HSPF2 9.0 · 1 pairing

  89. 89 ZSOVA-48HDMB-USZero
    48,000 Btu/hheating at 47°F 48,000 Btu/hcooling at 95°F

    48,000 Btu (4-ton) · Central · 5°F 38,000 Btu/h · Cold output 79% · HSPF2 8.5 · 1 pairing

  90. 90 ZSOVA-60HDMB-USZero
    54,000 Btu/hheating at 47°F 54,000 Btu/hcooling at 95°F

    54,000 Btu (4.5-ton) · Central · 5°F 38,000 Btu/h · Cold output 70% · HSPF2 8.4 · 1 pairing

Zero 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 ZMSB-09HV-USHHC Zero Mini-split 9,000 Btu11,000 12,000 9,000 92% 1.85 26.4 11.6 Variable R-410A US CA 1
2 ZMSB-09HV-USHHC-O Zero Mini-split 9,000 Btu11,000 12,000 9,000 92% 1.85 26.4 11.6 Variable R-410A US CA 1
3 ZMSB-09HV-USHHCR2-O Zero Mini-split 9,000 Btu11,500 12,000 9,000 96% 1.80 26.0 12.5 Variable R-454B US CA 1
4 ZMSB-12HVT-USHHCR2 Zero Mini-split 12,000 Btu (1-ton)12,000 12,000 12,000 100% 1.80 25.0 10.5 Variable R-454B US CA 1
5 ZMSB-09HVT-USHHCR2 Zero Mini-split 9,000 Btu9,100 9,000 9,000 101% 1.80 25.0 10.5 Variable R-454B US CA 1
6 Z2SOV-18HDTA-US-O Zero Mini-split 18,000 Btu (1.5-ton)14,000 18,000 18,000 78% 2.00 25.0 10.0 Variable R-32 US CA 1
7 ZMSB-09HV-USHHR2-O Zero Mini-split 9,000 Btu8,200 10,000 9,000 82–83% 2.33 24.6 13.0 Variable R-454B US CA 3
8 ZMSB-09HV-USHH Zero Mini-split 9,000 Btu7,500 10,000 9,000 75% 2.25 24.0 11.6 Variable R-410A US CA 1
9 ZMSB-18HV-USHHR2-O Zero Mini-split 18,000 Btu (1.5-ton)13,000 18,000 18,000 71–72% 2.35 24.0 11.1 Variable R-454B US CA 3
10 ZMSB-18HV-USHH Zero Mini-split 18,000 Btu (1.5-ton)12,800 18,000 18,000 71% 2.44 24.0 10.5 Variable R-410A US CA 1
11 ZMSB-12HV-USHHCR2-O Zero Mini-split 12,000 Btu (1-ton)11,500 12,000 12,000 96% 1.80 24.0 10.5 Variable R-454B US CA 1
12 Z5SOV-42HDTA-US-O Zero Mini-split 42,000 Btu (3.5-ton)31,000 42,000 42,000 74% 2.00 24.0 10.0 Variable R-32 US CA 1
13 ZMSB-18HVT-USR1-S24-O Zero Mini-split 18,000 Btu (1.5-ton)15,000 18,000 18,000 83% 1.80 24.0 10.0 Variable R-32 US CA 1
14 ZMSB-12HVT-USR1-S24-O Zero Mini-split 12,000 Btu (1-ton)10,000 12,000 12,000 83% 1.80 24.0 10.0 Variable R-32 US CA 1
15 ZMSB-12HVT110-USR1-S24-O Zero Mini-split 12,000 Btu (1-ton)10,000 12,000 12,000 83% 1.80 24.0 10.0 Variable R-32 US CA 1
16 ZMSB-12HVT-USHHR2 Zero Mini-split 12,000 Btu (1-ton)9,100 12,600 12,000 72% 2.10 24.0 10.0 Variable R-454B US CA 1
17 ZMSB-18HVT-USHHCR2 Zero Mini-split 18,000 Btu (1.5-ton)17,800 18,000 18,000 99% 1.80 23.5 10.0 Variable R-454B US CA 2
18 ZMSB-24HV-USHHR2-O Zero Mini-split 24,000 Btu (2-ton)17,800 25,000 24,000 71–74% 2.15 23.5 10.0 Variable R-454B US CA 3
19 ZMSB-12HV110-USHHR2-O Zero Mini-split 12,000 Btu (1-ton)7,300 12,000 12,000 61% 2.20 23.2 10.4 Variable R-454B US CA 1
20 ZMSB-12HV-USHHR2-O Zero Mini-split 12,000 Btu (1-ton)8,600 12,000 12,000 70–72% 2.35 23.1 11.5 Variable R-454B US CA 3
21 ZMSB-12HV-USHH Zero Mini-split 12,000 Btu (1-ton)8,400 12,000 12,000 70% 2.41 23.1 10.8 Variable R-410A US CA 1
22 ZMSB-12HV-USHHC Zero Mini-split 12,000 Btu (1-ton)11,000 12,000 12,000 92% 1.88 23.1 10.5 Variable R-410A US CA 1
23 ZMSB-12HV-USHHC-O Zero Mini-split 12,000 Btu (1-ton)11,000 12,000 12,000 92% 1.88 23.1 10.5 Variable R-410A US CA 1
24 Z4SOV-36HDTA-US-O Zero Mini-split 36,000 Btu (3-ton)31,000 42,000 38,000 74% 2.00 23.0 10.0 Variable R-32 US CA 1
25 ZMSB-24HVT-USR1-S23-O Zero Mini-split 24,000 Btu (2-ton)17,500 24,000 23,000 73% 2.10 23.0 10.0 Variable R-32 US CA 1
26 ZMSB-18HVT-USHHR2 Zero Mini-split 18,000 Btu (1.5-ton)13,600 19,000 18,000 72% 1.80 23.0 10.0 Variable R-454B US CA 1
27 ZMSB-12HVT110-USHHR2 Zero Mini-split 12,000 Btu (1-ton)8,900 12,400 12,000 72% 2.10 23.0 10.0 Variable R-454B US CA 1
28 ZMSB-09HVT110-USR1-S23-O Zero Mini-split 9,000 Btu8,000 9,000 9,000 89% 1.80 23.0 10.0 Variable R-32 US CA 1
29 ZMSB-24HVT-USHHR2 Zero Mini-split 24,000 Btu (2-ton)18,600 25,000 23,000 74% 1.80 23.0 9.5 Variable R-454B US CA 1
30 ZMSB-09HVT-USR1-S23-O Zero Mini-split 9,000 Btu8,000 9,000 9,000 89% 1.80 23.0 9.5 Variable R-32 US CA 1
31 ZMSB-09HVT-USHHR2 Zero Mini-split 9,000 Btu7,100 10,000 9,000 71% 1.90 23.0 9.5 Variable R-454B US CA 1
32 ZMSB-09HVT110-USHHR2 Zero Mini-split 9,000 Btu7,100 10,000 9,000 71% 1.90 23.0 9.5 Variable R-454B US CA 1
33 ZMSB-24HVT-USHHCR2 Zero Mini-split 24,000 Btu (2-ton)22,400 24,000 24,000 93% 1.80 22.5 10.0 Variable R-454B US CA 1
34 Z3SOV-27HDTB-US Zero Mini-split 24,000 Btu (2-ton)18,900 27,000 27,000 70–71% 1.90 22.5 9.8 Variable R-454B US CA 2
35 ZMSB-24HV-USHHCR2-O Zero Mini-split 24,000 Btu (2-ton)24,000 26,000 23,000 92% 2.00 22.3 13.3 Variable R-454B US CA 1
36 ZMSB-24HV-USHHC Zero Mini-split 24,000 Btu (2-ton)23,000 26,000 23,000 88% 1.80 22.3 10.3 Variable R-410A US CA 1
37 ZMSB-24HV-USHHC-O Zero Mini-split 24,000 Btu (2-ton)23,000 26,000 23,000 88% 1.80 22.3 10.3 Variable R-410A US CA 1
38 ZMSB-30HV-USR2-O Zero Mini-split 30,000 Btu (2.5-ton)20,000 30,000 30,000 67% 1.94 22.3 9.0 Variable R-454B US CA 1
39 Z3SOV-27HDM-US Zero Mini-split 30,000 Btu (2.5-ton)18,800 28,000 27,400 67–68% 2.00 22.3 9.2 Variable R-410A US CA 3
40 ZMSB-18HV-USHHC Zero Mini-split 18,000 Btu (1.5-ton)17,200 18,000 18,000 96% 1.89 22.0 10.6 Variable R-410A US CA 1
41 ZMSB-18HV-USHHC-O Zero Mini-split 18,000 Btu (1.5-ton)17,200 18,000 18,000 96% 1.89 22.0 10.6 Variable R-410A US CA 1
42 Z3SOV-27HDTA-US-O Zero Mini-split 30,000 Btu (2.5-ton)21,000 28,000 28,000 75% 2.00 22.0 10.0 Variable R-32 US CA 1
43 Z2SOV-18HDTB-US Zero Mini-split 18,000 Btu (1.5-ton)15,000 19,000 18,000 79–80% 1.95 22.0 9.8 Variable R-454B US CA 2
44 Z4SOV-27HDMB-US Zero Mini-split 24,000 Btu (2-ton)18,900 26,800 26,200 70–71% 2.00 22.0 9.3 Variable R-454B US CA 3
45 ZMSB-18HV-USHHCR2-O Zero Mini-split 18,000 Btu (1.5-ton)18,000 18,000 18,000 100% 2.00 21.7 10.8 Variable R-454B US CA 1
46 ZMSB-09HVD-US Zero Mini-split 9,000 Btu7,000 10,000 9,000 70% 2.00 21.7 9.4 Variable R-410A US CA 1
47 ZMSB-09HV-USR2-O Zero Mini-split 9,000 Btu7,000 10,000 9,000 70% 2.00 21.6 9.4 Variable R-454B US CA 1
48 Z4SOV-36HDMB-US Zero Mini-split 36,000 Btu (3-ton)26,000 37,000 35,000 70% 2.00 21.6 9.6 Variable R-454B US CA 3
49 Z5SOV-36HDMB-US Zero Mini-split 36,000 Btu (3-ton)26,000 37,000 35,000 70% 2.00 21.6 9.6 Variable R-454B US CA 3
50 Z4SOV-36HDTB-US Zero Mini-split 36,000 Btu (3-ton)25,000 35,000 34,000 71–72% 1.90 21.5 10.3 Variable R-454B US CA 2
51 Z3SOV-18HDMB-US Zero Mini-split 18,000 Btu (1.5-ton)14,000 19,000 18,000 71–77% 2.25 21.5 10.0 Variable R-454B US CA 3
52 Z4SOV-18HDMB-US Zero Mini-split 18,000 Btu (1.5-ton)14,000 19,000 18,000 71–77% 2.25 21.5 10.0 Variable R-454B US CA 3
53 ZMSB-09HVD110-US Zero Mini-split 9,000 Btu7,000 10,000 9,000 70% 2.16 21.5 9.1 Variable R-410A US CA 1
54 ZMSB-09HV110-USR2-O Zero Mini-split 9,000 Btu7,000 10,000 9,000 70% 1.95 21.5 9.0 Variable R-454B US CA 1
55 Z5SOV-48HDM-US Zero Mini-split 48,000 Btu (4-ton)43,500 49,000 47,500 87–92% 2.00 21.1 9.4 Variable R-410A US CA 3
56 ZMSB-24HV-USHH Zero Mini-split 24,000 Btu (2-ton)16,700 26,000 24,000 64% 1.90 21.0 8.5 Variable R-410A US CA 1
57 ZMSB-30HVD-US Zero Mini-split 30,000 Btu (2.5-ton)18,400 30,000 30,000 61% 1.86 21.0 8.2 Variable R-410A US CA 1
58 Z4SOV-48HDMB-US Zero Mini-split 42,000 Btu (3.5-ton)37,000 47,500 45,000 75–81% 2.10 20.9 10.3 Variable R-454B US CA 3
59 Z6SOV-48HDMB-US Zero Mini-split 42,000 Btu (3.5-ton)37,000 47,500 45,000 75–81% 2.10 20.9 10.3 Variable R-454B US CA 3
60 Z4SOV-48HDMB-USHH Zero Mini-split 48,000 Btu (4-ton)48,000 48,000 47,000 98–100% 2.00 20.8 10.6 Variable R-454B US CA 3
61 Z5SOV-42HDTB-US Zero Mini-split 42,000 Btu (3.5-ton)30,000 42,000 42,000 71–79% 1.95 20.8 9.5 Variable R-454B US CA 2
62 Z4SOV-53HDMB-USHH Zero Mini-split 54,000 Btu (4.5-ton)48,000 55,000 51,000 87% 2.05 20.7 10.7 Variable R-454B US CA 3
63 Z4SOV-18HDMB-USHH Zero Mini-split 18,000 Btu (1.5-ton)18,000 20,000 19,000 90% 2.00 20.5 10.0 Variable R-454B US CA 3
64 Z4SOV-36HDMB-USHH Zero Mini-split 36,000 Btu (3-ton)37,400 36,000 36,000 103–106% 1.95 20.5 10.9 Variable R-454B US CA 3
65 ZMSB-18HV-USR2-O Zero Mini-split 18,000 Btu (1.5-ton)11,500 18,800 18,000 61% 2.00 20.2 9.1 Variable R-454B US CA 1
66 ZMSB-33HV-USHHCR2-O Zero Mini-split 30,000 Btu (2.5-ton)34,600 36,000 33,000 96% 1.91 20.0 10.5 Variable R-454B US CA 2
67 Z3SOV-18HDM-US Zero Mini-split 18,000 Btu (1.5-ton)12,900 19,000 18,000 66–70% 2.00 20.0 10.0 Variable R-410A US CA 3
68 Z4SOV-27HDMB-USHH Zero Mini-split 30,000 Btu (2.5-ton)27,000 27,000 27,000 96–100% 1.95 20.0 9.8 Variable R-454B US CA 3
69 Z4SOV-36HDM-US Zero Mini-split 36,000 Btu (3-ton)24,000 37,000 36,000 65% 1.68 20.0 9.2 Variable R-410A US CA 1
70 ZMSB-18HV-US-O Zero Mini-split 18,000 Btu (1.5-ton)11,700 18,800 18,000 62% 2.06 19.5 8.7 Variable R-410A US CA 1
71 ZMSB-18HVD-US Zero Mini-split 18,000 Btu (1.5-ton)11,700 18,800 18,000 62% 2.06 19.5 8.7 Variable R-410A US CA 1
72 ZSOV-24HDM-US Zero Mini-split 24,000 Btu (2-ton)18,200 24,000 24,000 56–80% 2.20 19.0 10.3 Variable R-410A US CA 3
73 ZSOVA-18HDMB-USHH Zero Central 18,000 Btu (1.5-ton)18,000 19,000 18,000 95% 2.00 19.0 9.7 Variable R-454B US CA 1
74 ZOV-36HDTB Zero Central 36,000 Btu (3-ton)26,000 34,000 34,000 76% 1.90 19.0 9.0 Variable R-454B US CA 1
75 ZSOV-48HDM-US Zero Mini-split 48,000 Btu (4-ton)35,000 50,000 48,000 70% 1.85 18.9 10.0 Variable R-410A US CA 1
76 ZSOVA-18HDMB-US Zero Central 18,000 Btu (1.5-ton)11,200 18,000 18,000 62% 2.00 18.8 9.1 Variable R-454B US CA 1
77 ZMSB-24HV-USR2-O Zero Mini-split 24,000 Btu (2-ton)17,000 24,000 24,000 71% 2.11 18.5 9.0 Variable R-454B US CA 1
78 ZSOVA-24HDMB-USHH Zero Central 24,000 Btu (2-ton)21,600 24,000 23,000 90% 1.87 18.3 10.0 Variable R-454B US CA 1
79 ZSOVA-24HDMB-US Zero Central 24,000 Btu (2-ton)21,600 26,000 24,000 83% 1.87 18.1 9.7 Variable R-454B US CA 1
80 ZOV-24HDTB Zero Central 24,000 Btu (2-ton)18,000 24,000 24,000 75% 1.80 18.0 9.0 Variable R-454B US CA 1
81 ZOV-48HDTB Zero Central 48,000 Btu (4-ton)33,000 47,000 47,000 70% 1.80 18.0 8.5 Variable R-454B US CA 1
82 ZSOU-24HDG-HYPER Zero Central 24,000 Btu (2-ton)14,000 25,000 24,000 56% 1.90 18.0 8.1 Variable R-410A US CA 1
83 ZSOVA-36HDMB-USHH Zero Central 36,000 Btu (3-ton)39,000 37,000 36,000 105% 1.90 17.4 10.3 Variable R-454B US CA 1
84 ZOV-60HDTB Zero Central 54,000 Btu (4.5-ton)38,000 53,000 53,000 72% 1.80 17.0 8.2 Variable R-454B US CA 1
85 ZSOVA-30HDMB-USHH Zero Central 30,000 Btu (2.5-ton)32,600 34,000 30,000 96% 1.96 16.8 10.0 Variable R-454B US CA 1
86 ZSOVA-48HDMB-USHH Zero Central 48,000 Btu (4-ton)46,000 50,000 48,000 92% 1.90 16.5 9.5 Variable R-454B US CA 1
87 ZSOVA-36HDMB-US Zero Central 36,000 Btu (3-ton)27,000 36,000 36,000 75% 2.00 16.1 8.7 Variable R-454B US CA 1
88 ZSOVA-60HDMB-USHH Zero Central 54,000 Btu (4.5-ton)52,000 56,000 54,000 93% 1.80 16.0 9.0 Variable R-454B US CA 1
89 ZSOVA-48HDMB-US Zero Central 48,000 Btu (4-ton)38,000 48,000 48,000 79% 1.85 16.0 8.5 Variable R-454B US CA 1
90 ZSOVA-60HDMB-US Zero Central 54,000 Btu (4.5-ton)38,000 54,000 54,000 70% 1.80 15.2 8.4 Variable R-454B US CA 1

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

90 of 90 units

Other sizes

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