SLIMAIR heat pumps: how do their ratings compare?

A typical SLIMAIR heat pump beats 60% of similar heat pumps (same size and type), which is well above average. SLIMAIR has 48 heat pump models in this list.

Covers heat pumps sold new today (R-454B and R-32 refrigerant). See older R-410A models · Updated Oct 10, 2026

Overall score

60%

of similar heat pumps beaten by its typical model

Well above average

SLIMAIR has no QMID (the manufacturer ID the 25C tax credit needs) on file, so it is not ranked against other brands. Based on 73 models with every rating.

SLIMAIR, rating by ratingStrongest on winter-long heating efficiency (beats 73%), weakest on hot-day cooling efficiency (beats 53%).

Efficiency on a 5°F dayCOP at 5°FBeats 60%
Heating power kept at 5°FCapacity at 5°F vs 47°FBeats 59%
Winter-long heating efficiencyHSPF2Beats 73%
Summer-long cooling efficiencySEER2Beats 61%
Hot-day cooling efficiencyEER2Beats 53%

Average (50%)

Each bar: the share of similar heat pumps a typical model beats on that rating.

Want SLIMAIR’s ranks and its models inside every size class? Switch to Advanced

Rebate standards

Share of this brand’s models that meet the efficiency levels rebate programs use. Programs can have other rules too.

90%
meet CEE 2025 Tier 1, the level many utility rebates use.
43 models. All brands: 57%.
See them
77%
meet Xcel Energy Colorado’s cold-climate rebate levels.
37 models. All brands: 53%.
See them
2%
reach the cold-climate tier: full heating output and a COP of 2.1 or more at 5°F.
1 model. All brands: 3%.
See them

SLIMAIR all-around best, by size

Balances heating (5°F output and efficiency, HSPF2) and cooling (SEER2, EER2), each rating against units their size.

Showing Ductless, 2 tons (21,000–26,999 Btu/h cooling). What size is my system?

4 of SLIMAIR’s 4 models of this size and type have all five ratings.

1SHC24AE2AGwith ductless indoor unit SHM24AE2AGSLIMAIR2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 77.9Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
Heat kept at 5°F
71% (Capacity at 5°F vs 47°F)
Below the middle
Efficiency at 5°F
2.15 (COP at 5°F)
Great
Winter efficiency
10.0 (HSPF2)
Good
Cooling efficiency
23.5 (SEER2)
Top 10%
Hot-day cooling
13.0 (EER2)
Great
74.3score / 100Heating 64 · Cooling 85
2SHC24AH2AGwith ductless indoor unit SHM24AE2AGSLIMAIR2 tons · 23,000 Btu/h · DuctlessCold-climate pick, score 89.4Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
Heat kept at 5°F
92% (Capacity at 5°F vs 47°F)
Great
Efficiency at 5°F
2.00 (COP at 5°F)
Good
Winter efficiency
13.3 (HSPF2)
Top 10%
Cooling efficiency
22.3 (SEER2)
Good
Hot-day cooling
12.5 (EER2)
Good
72.9score / 100Heating 77 · Cooling 69
3SHC4Z27AC2AGSLIMAIR2 tons · 26,000 Btu/h · DuctlessCold-climate pick, score 41.1Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
Heat kept at 5°F
70% (Capacity at 5°F vs 47°F)
Below the middle
Efficiency at 5°F
2.00 (COP at 5°F)
Good
Winter efficiency
9.5 (HSPF2)
Below the middle
Cooling efficiency
23.0 (SEER2)
Great
Hot-day cooling
12.2 (EER2)
Good
56.7score / 100Heating 41 · Cooling 72
4SHC24AC2AGwith ductless indoor unit SHM24AC2AGSLIMAIR2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 45.1Meets Xcel CC, ENERGY STAR CC
Heat kept at 5°F
71% (Capacity at 5°F vs 47°F)
Below the middle
Efficiency at 5°F
2.11 (COP at 5°F)
Great
Winter efficiency
9.0 (HSPF2)
Below the middle
Cooling efficiency
18.5 (SEER2)
Below the middle
Hot-day cooling
9.6 (EER2)
Below the middle
29.2score / 100Heating 45 · Cooling 13

These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.

What to do next

The advanced view has SLIMAIR’s ranks on each rating, its models inside every size and type, cold-weather curves and its newest certifications.

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