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MSH Legacy heat pumps

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

Filters MSH Legacy
  1. 1 PHB560000K000BAirquest, Arcoaire + 9 more
    55,500 Btu/hheating at 47°F 56,000 Btu/hcooling at 95°F

    54,000 Btu (4.5-ton) · Central · 5°F 25,800 Btu/h · Cold output 46% · HSPF2 7.7 · 11 pairings

  2. 2 N4H5S30*K*AAA*Airquest, Arcoaire + 9 more
    28,000 Btu/hheating at 47°F 27,800 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Central · 5°F 12,900 Btu/h · Cold output 46% · HSPF2 7.8 · 11 pairings

  3. 3 R4H5S30*K*AAA*Airquest, Arcoaire + 9 more
    28,000 Btu/hheating at 47°F 27,800 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Central · 5°F 12,900 Btu/h · Cold output 46% · HSPF2 7.8 · 11 pairings

  4. 4 PHB548000K000BAirquest, Arcoaire + 9 more
    44,500 Btu/hheating at 47°F 46,500 Btu/hcooling at 95°F

    48,000 Btu (4-ton) · Central · 5°F 18,200 Btu/h · Cold output 41% · HSPF2 7.2 · 11 pairings

  5. 5 PHB536000K000BAirquest, Arcoaire + 9 more
    34,400 Btu/hheating at 47°F 35,200 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Central · 5°F 14,100 Btu/h · Cold output 41% · HSPF2 7.2 · 11 pairings

  6. 6 PHB524000K000BAirquest, Arcoaire + 9 more
    23,400 Btu/hheating at 47°F 22,200 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Central · 5°F 8,400 Btu/h · Cold output 36% · HSPF2 7.2 · 11 pairings

MSH Legacy 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 PHB560000K000B Airquest, Arcoaire + 9 more Central 54,000 Btu (4.5-ton)25,800 55,500 56,000 46% 2.00 15.5 7.7 2-stage R-454B US CA 11
2 N4H5S30*K*AAA* Airquest, Arcoaire + 9 more Central 30,000 Btu (2.5-ton)12,900 28,000 27,800 46% 2.10 15.2 7.8 1-stage R-410A US CA 11
3 R4H5S30*K*AAA* Airquest, Arcoaire + 9 more Central 30,000 Btu (2.5-ton)12,900 28,000 27,800 46% 2.10 15.2 7.8 1-stage R-410A US CA 11
4 PHB548000K000B Airquest, Arcoaire + 9 more Central 48,000 Btu (4-ton)18,200 44,500 46,500 41% 1.80 15.2 7.2 2-stage R-454B US CA 11
5 PHB536000K000B Airquest, Arcoaire + 9 more Central 36,000 Btu (3-ton)14,100 34,400 35,200 41% 1.70 15.2 7.2 2-stage R-454B US CA 11
6 PHB524000K000B Airquest, Arcoaire + 9 more Central 24,000 Btu (2-ton)8,400 23,400 22,200 36% 1.60 15.2 7.2 2-stage R-454B US CA 11

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

6 of 6 units

Other sizes

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