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Olmo heat pumps

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

Filters Olmo
  1. 1 OS-RMS27-230VOOlmo
    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

  2. 2 OS-SR09-230VOOlmo
    9,000 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 5,400 Btu/h · Cold output 60–63% · HSPF2 9.3 · 2 pairings

  3. 3 OS-RMS36-230VOOlmo
    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

  4. 4 OS-RMS18-230VOOlmo
    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

  5. 5 OS-RMS42-230VOOlmo
    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

  6. 6 OS-MSR24-230VOOlmo
    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

  7. 7 OS-MSR18-230VOOlmo
    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

  8. 8 OS-MSR36-230VOOlmo
    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

  9. 9 OS-SR18-230VOOlmo
    18,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 13,400 Btu/h · Cold output 74–76% · HSPF2 9.8 · 2 pairings

  10. 10 CH-EL30-230VOC&H, Cooper&Hunter, Olmo
    30,000 Btu/hheating at 47°F 30,000 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Mini-split · 5°F 17,500 Btu/h · Cold output 58–61% · HSPF2 9.2 · 5 pairings

  11. 11 OS-SR09-115VOOlmo
    9,500 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 6,000 Btu/h · Cold output 63% · HSPF2 9.0 · 1 pairing

  12. 12 OS-MSR42-230VOOlmo
    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

  13. 13 OS-EL09ALP230VOCooper&Hunter, Olmo
    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 8.8 · 2 pairings

  14. 14 OS-EAH36-230VOOlmo
    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 9.5 · 1 pairing

  15. 15 OS-EAH48-230VOOlmo
    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

  16. 16 OS-EAH24-230VOOlmo
    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

Olmo 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 OS-RMS27-230VO Olmo Mini-split 24,000 Btu (2-ton)27,000 27,000 27,000 100% 1.82 23.0 10.0 Variable R-454B US 1
2 OS-SR09-230VO Olmo Mini-split 9,000 Btu5,400 9,000 9,000 60–63% 2.10 22.8 9.3 Variable R-32 US CA 2
3 OS-RMS36-230VO Olmo Mini-split 36,000 Btu (3-ton)36,000 36,000 36,000 100% 1.92 22.0 10.0 Variable R-454B US 1
4 OS-RMS18-230VO Olmo Mini-split 18,000 Btu (1.5-ton)18,000 18,000 18,000 100% 1.99 22.0 10.0 Variable R-454B US 1
5 OS-RMS42-230VO Olmo Mini-split 42,000 Btu (3.5-ton)36,000 48,000 42,000 75% 1.92 22.0 9.5 Variable R-454B US 1
6 OS-MSR24-230VO Olmo Mini-split 24,000 Btu (2-ton)24,000 24,000 24,000 100% 1.84 22.0 9.1 Variable R-410A US CA 1
7 OS-MSR18-230VO Olmo Mini-split 18,000 Btu (1.5-ton)18,000 18,000 18,000 100% 1.84 21.0 9.5 Variable R-410A US CA 1
8 OS-MSR36-230VO Olmo Mini-split 30,000 Btu (2.5-ton)36,000 32,000 32,000 113% 1.84 21.0 9.0 Variable R-410A US CA 1
9 OS-SR18-230VO Olmo Mini-split 18,000 Btu (1.5-ton)13,400 18,000 18,000 74–76% 2.45 20.5 9.8 Variable R-32 US CA 2
10 CH-EL30-230VO C&H, Cooper&Hunter, Olmo Mini-split 30,000 Btu (2.5-ton)17,500 30,000 30,000 58–61% 1.95 20.0 9.2 Variable R-410A US CA 5
11 OS-SR09-115VO Olmo Mini-split 9,000 Btu6,000 9,500 9,000 63% 2.00 20.0 9.0 Variable R-32 US 1
12 OS-MSR42-230VO Olmo Mini-split 42,000 Btu (3.5-ton)36,000 42,000 42,000 86% 1.84 20.0 9.0 Variable R-410A US CA 1
13 OS-EL09ALP230VO Cooper&Hunter, Olmo Mini-split 9,000 Btu7,100 10,000 9,000 71% 2.10 18.5 8.8 Variable R-410A US CA 2
14 OS-EAH36-230VO Olmo Central 36,000 Btu (3-ton)26,000 34,000 34,000 76% 2.05 18.0 9.5 Variable R-410A US CA 1
15 OS-EAH48-230VO Olmo Central 48,000 Btu (4-ton)33,000 47,000 48,000 70% 1.90 17.5 8.5 Variable R-410A US CA 1
16 OS-EAH24-230VO Olmo Central 24,000 Btu (2-ton)16,900 22,000 22,000 77% 2.05 16.5 9.0 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.

16 of 16 units

Other sizes

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