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Gridless heat pumps

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

Filters Gridless
  1. 1 GRID09OHHVGridless
    12,200 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 12,200 Btu/h · Cold output 100% · HSPF2 11.8 · 1 pairing

  2. 2 GRID12OHHVGridless
    12,200 Btu/hheating at 47°F 12,000 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 12,200 Btu/h · Cold output 100% · HSPF2 11.8 · 1 pairing

  3. 3 GRID15OHHVGridless
    15,200 Btu/hheating at 47°F 15,000 Btu/hcooling at 95°F

    15,000 Btu · Mini-split · 5°F 12,200 Btu/h · Cold output 80% · HSPF2 11.1 · 1 pairing

  4. 4 O-AYD09SD-1Gridless
    9,000 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 78% · HSPF2 10.5 · 1 pairing

  5. 5 GRID09OHVGridless
    9,000 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 9,000 Btu/h · Cold output 100% · HSPF2 11.0 · 1 pairing

  6. 6 O-AYD12SD-1Gridless
    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 9.5 · 1 pairing

  7. 7 GRID24OM3Gridless
    27,000 Btu/hheating at 47°F 27,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 27,000 Btu/h · Cold output 100% · HSPF2 10.0 · 1 pairing

  8. 8 GRID12OHVGridless
    12,000 Btu/hheating at 47°F 12,000 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 10,600 Btu/h · Cold output 88% · HSPF2 9.5 · 1 pairing

  9. 9 GRID24OHVGridless
    24,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 19,200 Btu/h · Cold output 80% · HSPF2 9.5 · 1 pairing

  10. 10 GRID36OM4Gridless
    36,000 Btu/hheating at 47°F 36,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Mini-split · 5°F 36,000 Btu/h · Cold output 100% · HSPF2 10.0 · 1 pairing

  11. 11 GRID18OM2Gridless
    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 10.0 · 1 pairing

  12. 12 GRID48OM5Gridless
    48,000 Btu/hheating at 47°F 42,000 Btu/hcooling at 95°F

    42,000 Btu (3.5-ton) · Mini-split · 5°F 36,000 Btu/h · Cold output 75% · HSPF2 9.5 · 1 pairing

  13. 13 O-AYD24SD-3Gridless
    24,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 24,000 Btu/h · Cold output 100% · HSPF2 9.1 · 1 pairing

  14. 14 O-AYD24SD-1Gridless
    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 76% · HSPF2 10.0 · 1 pairing

  15. 15 GRID18OHVGridless
    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 9.5 · 1 pairing

  16. 16 O-AYD18SD-2Gridless
    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 9.5 · 1 pairing

  17. 17 O-AYD36SD-4Gridless
    32,000 Btu/hheating at 47°F 32,000 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Mini-split · 5°F 36,000 Btu/h · Cold output 113% · HSPF2 9.0 · 1 pairing

  18. 18 O-AYD18SD-1Gridless
    18,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 13,300 Btu/h · Cold output 74% · HSPF2 9.5 · 1 pairing

  19. 19 O-AYD42SD-5Gridless
    42,000 Btu/hheating at 47°F 42,000 Btu/hcooling at 95°F

    42,000 Btu (3.5-ton) · Mini-split · 5°F 36,000 Btu/h · Cold output 86% · HSPF2 9.0 · 1 pairing

  20. 20 GRID36OCGridless
    34,000 Btu/hheating at 47°F 34,000 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Central · 5°F 27,000 Btu/h · Cold output 79–97% · HSPF2 9.4 · 2 pairings

  21. 21 GRID24OCGridless
    24,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Central · 5°F 20,800 Btu/h · Cold output 87–88% · HSPF2 9.1 · 2 pairings

  22. 22 GRID48OCGridless
    48,000 Btu/hheating at 47°F 48,000 Btu/hcooling at 95°F

    48,000 Btu (4-ton) · Central · 5°F 34,000 Btu/h · Cold output 71–77% · HSPF2 8.7 · 2 pairings

  23. 23 GRID60OCGridless
    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 70–74% · HSPF2 8.6 · 2 pairings

  24. 24 O-AYC48SD-1Gridless
    47,000 Btu/hheating at 47°F 48,000 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

  25. 25 O-AYC24SD-1Gridless
    22,000 Btu/hheating at 47°F 22,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Central · 5°F 16,900 Btu/h · Cold output 77% · HSPF2 9.0 · 1 pairing

Gridless 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 GRID09OHHV Gridless Mini-split 9,000 Btu12,200 12,200 9,000 100% 2.25 32.0 11.8 Variable R-454B CA 1
2 GRID12OHHV Gridless Mini-split 12,000 Btu (1-ton)12,200 12,200 12,000 100% 2.25 30.0 11.8 Variable R-454B CA 1
3 GRID15OHHV Gridless Mini-split 15,000 Btu12,200 15,200 15,000 80% 2.25 25.6 11.1 Variable R-454B CA 1
4 O-AYD09SD-1 Gridless Mini-split 9,000 Btu7,000 9,000 9,000 78% 2.05 25.5 10.5 Variable R-410A CA 1
5 GRID09OHV Gridless Mini-split 9,000 Btu9,000 9,000 9,000 100% 2.10 25.0 11.0 Variable R-454B CA 1
6 O-AYD12SD-1 Gridless Mini-split 12,000 Btu (1-ton)8,400 12,000 12,000 70% 2.05 23.5 9.5 Variable R-410A CA 1
7 GRID24OM3 Gridless Mini-split 24,000 Btu (2-ton)27,000 27,000 27,000 100% 1.82 23.0 10.0 Variable R-454B CA 1
8 GRID12OHV Gridless Mini-split 12,000 Btu (1-ton)10,600 12,000 12,000 88% 2.00 23.0 9.5 Variable R-454B CA 1
9 GRID24OHV Gridless Mini-split 24,000 Btu (2-ton)19,200 24,000 24,000 80% 2.00 22.5 9.5 Variable R-454B CA 1
10 GRID36OM4 Gridless Mini-split 36,000 Btu (3-ton)36,000 36,000 36,000 100% 1.92 22.0 10.0 Variable R-454B CA 1
11 GRID18OM2 Gridless Mini-split 18,000 Btu (1.5-ton)18,000 18,000 18,000 100% 1.99 22.0 10.0 Variable R-454B CA 1
12 GRID48OM5 Gridless Mini-split 42,000 Btu (3.5-ton)36,000 48,000 42,000 75% 1.92 22.0 9.5 Variable R-454B CA 1
13 O-AYD24SD-3 Gridless Mini-split 24,000 Btu (2-ton)24,000 24,000 24,000 100% 1.84 22.0 9.1 Variable R-410A CA 1
14 O-AYD24SD-1 Gridless Mini-split 24,000 Btu (2-ton)18,200 24,000 24,000 76% 1.75 21.0 10.0 Variable R-410A CA 1
15 GRID18OHV Gridless Mini-split 18,000 Btu (1.5-ton)18,000 18,000 18,000 100% 1.90 21.0 9.5 Variable R-454B CA 1
16 O-AYD18SD-2 Gridless Mini-split 18,000 Btu (1.5-ton)18,000 18,000 18,000 100% 1.84 21.0 9.5 Variable R-410A CA 1
17 O-AYD36SD-4 Gridless Mini-split 30,000 Btu (2.5-ton)36,000 32,000 32,000 113% 1.84 21.0 9.0 Variable R-410A CA 1
18 O-AYD18SD-1 Gridless Mini-split 18,000 Btu (1.5-ton)13,300 18,000 18,000 74% 1.80 20.5 9.5 Variable R-410A CA 1
19 O-AYD42SD-5 Gridless Mini-split 42,000 Btu (3.5-ton)36,000 42,000 42,000 86% 1.84 20.0 9.0 Variable R-410A CA 1
20 GRID36OC Gridless Central 30,000 Btu (2.5-ton)27,000 34,000 34,000 79–97% 1.98 18.0 9.4 Variable R-454B CA 2
21 GRID24OC Gridless Central 24,000 Btu (2-ton)20,800 24,000 24,000 87–88% 2.13 18.0 9.1 Variable R-454B CA 2
22 GRID48OC Gridless Central 48,000 Btu (4-ton)34,000 48,000 48,000 71–77% 2.21 17.8 8.7 Variable R-454B CA 2
23 GRID60OC Gridless Central 54,000 Btu (4.5-ton)38,000 54,000 54,000 70–74% 2.23 17.7 8.6 Variable R-454B CA 2
24 O-AYC48SD-1 Gridless Central 48,000 Btu (4-ton)33,000 47,000 48,000 70% 1.90 17.5 8.5 Variable R-410A CA 1
25 O-AYC24SD-1 Gridless Central 24,000 Btu (2-ton)16,900 22,000 22,000 77% 2.05 16.5 9.0 Variable R-410A CA 1

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

25 of 25 units

Other sizes

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