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Karda heat pumps

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

Filters Karda
  1. 1 3KARDA09SZOKarda, PerfectAire
    12,000 Btu/hheating at 47°F 9,000 Btu/hcooling at 95°F

    9,000 Btu · Mini-split · 5°F 11,000 Btu/h · Cold output 92–108% · HSPF2 11.6 · 4 pairings

  2. 2 3KARDA12SZOKarda
    12,000 Btu/hheating at 47°F 12,000 Btu/hcooling at 95°F

    12,000 Btu (1-ton) · Mini-split · 5°F 11,900 Btu/h · Cold output 83–100% · HSPF2 10.0 · 9 pairings

  3. 3 3KARDA27MZ3Karda, PerfectAire
    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 · 7 pairings

  4. 4 3KARDA48MZ5Karda
    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

  5. 5 3KARDA24SZOKarda
    25,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 25,800 Btu/h · Cold output 88–108% · HSPF2 10.5 · 3 pairings

  6. 6 3PAMSHH18-SZOKarda, PerfectAire
    18,000 Btu/hheating at 47°F 18,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 17,200 Btu/h · Cold output 93–96% · HSPF2 9.8 · 7 pairings

  7. 7 3KARDA18MZ2Karda
    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

  8. 8 3KARDA18SZOKarda
    17,000 Btu/hheating at 47°F 16,000 Btu/hcooling at 95°F

    15,000 Btu · Mini-split · 5°F 16,000 Btu/h · Cold output 93–96% · HSPF2 9.5 · 6 pairings

  9. 9 3KARDA36MZ4Karda
    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

  10. 10 1KARDA24SZO20.5Karda, PerfectAire
    25,000 Btu/hheating at 47°F 24,000 Btu/hcooling at 95°F

    24,000 Btu (2-ton) · Mini-split · 5°F 27,000 Btu/h · Cold output 108% · HSPF2 10.5 · 2 pairings

  11. 11 2KARDA18SZO20Karda, PerfectAire
    19,000 Btu/hheating at 47°F 17,000 Btu/hcooling at 95°F

    18,000 Btu (1.5-ton) · Mini-split · 5°F 17,700 Btu/h · Cold output 93% · HSPF2 9.5 · 2 pairings

Karda 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 3KARDA09SZO Karda, PerfectAire Mini-split 9,000 Btu11,000 12,000 9,000 92–108% 1.85 26.4 11.6 Variable R-410A US CA 4
2 3KARDA12SZO Karda Mini-split 12,000 Btu (1-ton)11,900 12,000 12,000 83–100% 1.89 23.1 10.0 Variable R-410A US CA 9
3 3KARDA27MZ3 Karda, PerfectAire 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 7
4 3KARDA48MZ5 Karda 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
5 3KARDA24SZO Karda Mini-split 24,000 Btu (2-ton)25,800 25,000 24,000 88–108% 2.00 20.5 10.5 Variable R-410A US CA 3
6 3PAMSHH18-SZO Karda, PerfectAire Mini-split 18,000 Btu (1.5-ton)17,200 18,000 18,000 93–96% 1.86 20.5 9.8 Variable R-410A US CA 7
7 3KARDA18MZ2 Karda 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
8 3KARDA18SZO Karda Mini-split 15,000 Btu16,000 17,000 16,000 93–96% 1.80 20.0 9.5 Variable R-410A US CA 6
9 3KARDA36MZ4 Karda 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
10 1KARDA24SZO20.5 Karda, PerfectAire Mini-split 24,000 Btu (2-ton)27,000 25,000 24,000 108% 2.00 19.2 10.5 Variable R-410A US CA 2
11 2KARDA18SZO20 Karda, PerfectAire Mini-split 18,000 Btu (1.5-ton)17,700 19,000 17,000 93% 1.85 18.0 9.5 Variable R-410A US CA 2

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

11 of 11 units

Other sizes

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