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Ortech heat pumps

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

Filters Ortech
  1. 1 OAH-MZ36K-208-CH-OOrtech
    36,000 Btu/hheating at 47°F 36,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Mini-split · 5°F 33,000 Btu/h · Cold output 92% · HSPF2 11.0 · 1 pairing

  2. 2 OAH-MZ42K-208-CH-OOrtech
    42,000 Btu/hheating at 47°F 42,000 Btu/hcooling at 95°F

    42,000 Btu (3.5-ton) · Mini-split · 5°F 34,000 Btu/h · Cold output 81% · HSPF2 10.5 · 1 pairing

  3. 3 OAH-MZ24K-208-CH-OOrtech
    24,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 26,000 Btu/h · Cold output 108% · HSPF2 10.5 · 1 pairing

  4. 4 OAH-MZ18K-208-CH-OOrtech
    18,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 21,800 Btu/h · Cold output 121% · HSPF2 11.0 · 1 pairing

  5. 5 OAH-MZ36K-208-PR-OOrtech
    36,000 Btu/hheating at 47°F 36,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Mini-split · 5°F 25,600 Btu/h · Cold output 71% · HSPF2 10.0 · 1 pairing

  6. 6 OAH-MZ24K-208-PR-OOrtech
    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 10.0 · 1 pairing

  7. 7 OAH-MZ42K-208-PR-OOrtech
    37,000 Btu/hheating at 47°F 37,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Mini-split · 5°F 32,400 Btu/h · Cold output 88% · HSPF2 10.0 · 1 pairing

  8. 8 OAH-SZ24K-208-PR-OOrtech
    24,000 Btu/hheating at 47°F 23,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 20,800 Btu/h · Cold output 87% · HSPF2 10.0 · 1 pairing

  9. 9 OAH-MZ18K-208-PR-OOrtech
    18,000 Btu/hheating at 47°F 17,700 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 14,500 Btu/h · Cold output 81% · HSPF2 10.0 · 1 pairing

  10. 10 OAH-SZ18K-208-PR-OOrtech
    18,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 13,500 Btu/h · Cold output 75% · HSPF2 9.5 · 1 pairing

  11. 11 OAH-SZ12K-115-PR-OOrtech
    12,300 Btu/hheating at 47°F 12,000 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 9,200 Btu/h · Cold output 75% · HSPF2 9.5 · 1 pairing

  12. 12 OAH-SZ12K-208-PR-OOrtech
    12,300 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 74% · HSPF2 9.5 · 1 pairing

  13. 13 OAH-AHU18K-CH-OOrtech
    22,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Central · 5°F 20,400 Btu/h · Cold output 93% · HSPF2 9.0 · 1 pairing

  14. 14 OAH-AHU24K-CH-OOrtech
    26,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Central · 5°F 23,000 Btu/h · Cold output 88% · HSPF2 9.5 · 1 pairing

  15. 15 OAH-AHU36K-CH-OOrtech
    38,000 Btu/hheating at 47°F 36,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Central · 5°F 38,000 Btu/h · Cold output 100% · HSPF2 10.0 · 1 pairing

  16. 16 OAH-AHU30K-CH-OOrtech
    33,000 Btu/hheating at 47°F 30,000 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Central · 5°F 32,200 Btu/h · Cold output 98% · HSPF2 9.0 · 1 pairing

  17. 17 OAH-AHU48K-CH-OOrtech
    49,000 Btu/hheating at 47°F 48,000 Btu/hcooling at 95°F

    48,000 Btu (4-ton) · Central · 5°F 48,000 Btu/h · Cold output 98% · HSPF2 9.5 · 1 pairing

  18. 18 OAH-AHU60K-CH-OOrtech
    55,000 Btu/hheating at 47°F 55,000 Btu/hcooling at 95°F

    54,000 Btu (4.5-ton) · Central · 5°F 48,000 Btu/h · Cold output 87% · HSPF2 9.5 · 1 pairing

Ortech 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 OAH-MZ36K-208-CH-O Ortech Mini-split 36,000 Btu (3-ton)33,000 36,000 36,000 92% 2.00 24.0 11.0 Variable R-32 CA 1
2 OAH-MZ42K-208-CH-O Ortech Mini-split 42,000 Btu (3.5-ton)34,000 42,000 42,000 81% 2.00 24.0 10.5 Variable R-32 CA 1
3 OAH-MZ24K-208-CH-O Ortech Mini-split 24,000 Btu (2-ton)26,000 24,000 24,000 108% 2.10 24.0 10.5 Variable R-32 CA 1
4 OAH-MZ18K-208-CH-O Ortech Mini-split 18,000 Btu (1.5-ton)21,800 18,000 18,000 121% 2.00 23.3 11.0 Variable R-32 CA 1
5 OAH-MZ36K-208-PR-O Ortech Mini-split 36,000 Btu (3-ton)25,600 36,000 36,000 71% 2.00 23.0 10.0 Variable R-32 CA 1
6 OAH-MZ24K-208-PR-O Ortech Mini-split 24,000 Btu (2-ton)21,600 24,000 24,000 90% 2.00 23.0 10.0 Variable R-32 CA 1
7 OAH-MZ42K-208-PR-O Ortech Mini-split 36,000 Btu (3-ton)32,400 37,000 37,000 88% 2.00 22.0 10.0 Variable R-32 CA 1
8 OAH-SZ24K-208-PR-O Ortech Mini-split 24,000 Btu (2-ton)20,800 24,000 23,000 87% 2.20 22.0 10.0 Variable R-32 US CA 1
9 OAH-MZ18K-208-PR-O Ortech Mini-split 18,000 Btu (1.5-ton)14,500 18,000 17,700 81% 2.00 22.0 10.0 Variable R-32 CA 1
10 OAH-SZ18K-208-PR-O Ortech Mini-split 18,000 Btu (1.5-ton)13,500 18,000 18,000 75% 2.20 22.0 9.5 Variable R-32 US CA 1
11 OAH-SZ12K-115-PR-O Ortech Mini-split 12,000 Btu (1-ton)9,200 12,300 12,000 75% 2.10 22.0 9.5 Variable R-32 US CA 1
12 OAH-SZ12K-208-PR-O Ortech Mini-split 12,000 Btu (1-ton)9,100 12,300 12,000 74% 2.00 22.0 9.5 Variable R-32 US CA 1
13 OAH-AHU18K-CH-O Ortech Central 18,000 Btu (1.5-ton)20,400 22,000 18,000 93% 1.90 19.2 9.0 Variable R-32 CA 1
14 OAH-AHU24K-CH-O Ortech Central 24,000 Btu (2-ton)23,000 26,000 24,000 88% 1.80 19.0 9.5 Variable R-32 CA 1
15 OAH-AHU36K-CH-O Ortech Central 36,000 Btu (3-ton)38,000 38,000 36,000 100% 1.90 18.2 10.0 Variable R-32 CA 1
16 OAH-AHU30K-CH-O Ortech Central 30,000 Btu (2.5-ton)32,200 33,000 30,000 98% 1.82 18.0 9.0 Variable R-32 CA 1
17 OAH-AHU48K-CH-O Ortech Central 48,000 Btu (4-ton)48,000 49,000 48,000 98% 2.00 17.0 9.5 Variable R-32 CA 1
18 OAH-AHU60K-CH-O Ortech Central 54,000 Btu (4.5-ton)48,000 55,000 55,000 87% 2.00 16.5 9.5 Variable R-32 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