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Classic heat pumps

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

Filters Classic
  1. 1 MC4VHC18SClassic
    20,000 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 65% · HSPF2 10.0 · 1 pairing

  2. 2 MMRSHC27AS3Classic
    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

  3. 3 GRH32IC18ASClassic
    18,500 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 70% · HSPF2 8.5 · 1 pairing

  4. 4 GRH32IC12ASClassic
    12,000 Btu/hheating at 47°F 12,000 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 9,400 Btu/h · Cold output 78% · HSPF2 8.5 · 1 pairing

  5. 5 GRH32IC12ASAClassic
    12,000 Btu/hheating at 47°F 12,000 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 8,500 Btu/h · Cold output 71% · HSPF2 8.5 · 1 pairing

  6. 6 MRSVHC24ASClassic
    25,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 18,500 Btu/h · Cold output 74–80% · HSPF2 10.3 · 3 pairings

  7. 7 MMRSHC48AS5Classic
    48,000 Btu/hheating at 47°F 48,000 Btu/hcooling at 95°F

    48,000 Btu (4-ton) · Mini-split · 5°F 33,000 Btu/h · Cold output 69% · HSPF2 9.5 · 1 pairing

  8. 8 GRH32IC36ASClassic
    34,000 Btu/hheating at 47°F 33,600 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Mini-split · 5°F 23,400 Btu/h · Cold output 69–72% · HSPF2 8.5 · 2 pairings

  9. 9 MRPOC30ASClassic
    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 · 2 pairings

  10. 10 MRSVHC18ASClassic
    20,000 Btu/hheating at 47°F 17,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 13,000 Btu/h · Cold output 65–67% · HSPF2 10.6 · 3 pairings

  11. 11 MMRSHC18AS2Classic
    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

  12. 12 MMRSHC36AS4Classic
    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

  13. 13 MRSVHC12ASClassic
    12,000 Btu/hheating at 47°F 11,500 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 8,400 Btu/h · Cold output 67–70% · HSPF2 10.3 · 3 pairings

  14. 14 GMRSHC42AS5Classic
    42,000 Btu/hheating at 47°F 42,000 Btu/hcooling at 95°F

    42,000 Btu (3.5-ton) · Mini-split · 5°F 37,000 Btu/h · Cold output 86–90% · HSPF2 9.0 · 3 pairings

  15. 15 GMRSHC36AS4Classic
    36,000 Btu/hheating at 47°F 36,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Mini-split · 5°F 34,000 Btu/h · Cold output 92–100% · HSPF2 9.0 · 3 pairings

  16. 16 GMRSHC24AS3Classic
    24,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 21,600 Btu/h · Cold output 90% · HSPF2 9.0 · 3 pairings

  17. 17 GMRSHC18AS2Classic
    18,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 13,700 Btu/h · Cold output 76–77% · HSPF2 9.0 · 3 pairings

  18. 18 MRSVHC48ASClassic
    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

Classic 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 MC4VHC18S Classic Mini-split 18,000 Btu (1.5-ton)13,000 20,000 18,000 65% 2.08 23.0 10.0 Variable R-410A US CA 1
2 MMRSHC27AS3 Classic 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
3 GRH32IC18AS Classic Mini-split 18,000 Btu (1.5-ton)13,000 18,500 18,000 70% 1.90 21.5 8.5 Variable R-32 US CA 1
4 GRH32IC12AS Classic Mini-split 12,000 Btu (1-ton)9,400 12,000 12,000 78% 1.90 21.5 8.5 Variable R-32 US CA 1
5 GRH32IC12ASA Classic Mini-split 12,000 Btu (1-ton)8,500 12,000 12,000 71% 1.90 21.5 8.5 Variable R-32 US CA 1
6 MRSVHC24AS Classic Mini-split 24,000 Btu (2-ton)18,500 25,000 24,000 74–80% 2.20 21.2 10.3 Variable R-410A US CA 3
7 MMRSHC48AS5 Classic Mini-split 48,000 Btu (4-ton)33,000 48,000 48,000 69% 1.80 21.1 9.5 Variable R-410A US CA 1
8 GRH32IC36AS Classic Mini-split 36,000 Btu (3-ton)23,400 34,000 33,600 69–72% 1.85 21.0 8.5 Variable R-32 US CA 2
9 MRPOC30AS Classic 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 2
10 MRSVHC18AS Classic Mini-split 18,000 Btu (1.5-ton)13,000 20,000 17,000 65–67% 2.40 20.0 10.6 Variable R-410A US CA 3
11 MMRSHC18AS2 Classic 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
12 MMRSHC36AS4 Classic 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
13 MRSVHC12AS Classic Mini-split 12,000 Btu (1-ton)8,400 12,000 11,500 67–70% 2.26 19.0 10.3 Variable R-410A US CA 3
14 GMRSHC42AS5 Classic Mini-split 42,000 Btu (3.5-ton)37,000 42,000 42,000 86–90% 1.90 19.0 9.0 Variable R-32 US CA 3
15 GMRSHC36AS4 Classic Mini-split 36,000 Btu (3-ton)34,000 36,000 36,000 92–100% 1.90 19.0 9.0 Variable R-32 US CA 3
16 GMRSHC24AS3 Classic Mini-split 24,000 Btu (2-ton)21,600 24,000 24,000 90% 1.86 19.0 9.0 Variable R-32 US CA 3
17 GMRSHC18AS2 Classic Mini-split 18,000 Btu (1.5-ton)13,700 18,000 18,000 76–77% 1.86 19.0 9.0 Variable R-32 US CA 3
18 MRSVHC48AS Classic 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

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

18 of 18 units

Other sizes

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