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Royalton heat pumps

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

Filters Royalton
  1. 1 4HP17L18P-**AAC Pro, Allied + 4 more
    17,400 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Central · 5°F 8,100 Btu/h · Cold output 44–54% · HSPF2 8.0 · 1,373 pairings

  2. 2 4HP17L36P-**AAC Pro, Allied + 4 more
    33,000 Btu/hheating at 47°F 36,000 Btu/hcooling at 95°F

    36,000 Btu (3-ton) · Central · 5°F 17,300 Btu/h · Cold output 50–56% · HSPF2 7.8 · 1,578 pairings

  3. 3 4HP17L24P-**AAC Pro, Allied + 4 more
    21,800 Btu/hheating at 47°F 23,200 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Central · 5°F 10,600 Btu/h · Cold output 47–52% · HSPF2 7.8 · 1,372 pairings

  4. 4 4HP17L30P-**AAC Pro, Allied + 4 more
    27,600 Btu/hheating at 47°F 29,400 Btu/hcooling at 95°F

    30,000 Btu (2.5-ton) · Central · 5°F 14,400 Btu/h · Cold output 49–53% · HSPF2 8.1 · 1,329 pairings

  5. 5 4HP17L42P-**AAC Pro, Allied + 4 more
    39,000 Btu/hheating at 47°F 41,000 Btu/hcooling at 95°F

    42,000 Btu (3.5-ton) · Central · 5°F 19,900 Btu/h · Cold output 50–55% · HSPF2 7.8 · 349 pairings

  6. 6 4HP17L48P-**AAC Pro, Allied + 4 more
    46,500 Btu/hheating at 47°F 48,000 Btu/hcooling at 95°F

    48,000 Btu (4-ton) · Central · 5°F 25,200 Btu/h · Cold output 53–57% · HSPF2 8.1 · 803 pairings

Royalton 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 4HP17L18P-**A AC Pro, Allied + 4 more Central 18,000 Btu (1.5-ton)8,100 17,400 18,000 44–54% 2.04 16.4 8.0 1-stage R-410A US CA 1,373
2 4HP17L36P-**A AC Pro, Allied + 4 more Central 36,000 Btu (3-ton)17,300 33,000 36,000 50–56% 2.14 16.0 7.8 1-stage R-410A US CA 1,578
3 4HP17L24P-**A AC Pro, Allied + 4 more Central 24,000 Btu (2-ton)10,600 21,800 23,200 47–52% 2.04 16.0 7.8 1-stage R-410A US CA 1,372
4 4HP17L30P-**A AC Pro, Allied + 4 more Central 30,000 Btu (2.5-ton)14,400 27,600 29,400 49–53% 2.22 15.8 8.1 1-stage R-410A US CA 1,329
5 4HP17L42P-**A AC Pro, Allied + 4 more Central 42,000 Btu (3.5-ton)19,900 39,000 41,000 50–55% 2.10 15.4 7.8 1-stage R-410A US CA 349
6 4HP17L48P-**A AC Pro, Allied + 4 more Central 48,000 Btu (4-ton)25,200 46,500 48,000 53–57% 2.26 15.2 8.1 1-stage R-410A US CA 803

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