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Relief Sciences heat pumps: how do their ratings compare?

A typical Relief Sciences heat pump beats 66% of similar heat pumps (same size and type), which is well above average. Relief Sciences has 10 heat pump models in this list.

Covers older R-410A heat pumps, no longer installed new. See models sold today · Updated

Overall score

66%

of similar heat pumps beaten by its typical model

Well above average

Relief Sciences has no QMID (the manufacturer ID the 25C tax credit needs) on file, so it is not ranked against other brands. Based on 16 models with every rating.

Relief Sciences, rating by ratingStrongest on summer-long cooling efficiency (beats 76%), weakest on efficiency on a 5°f day (beats 38%).
  • Efficiency on a 5°F dayCOP at 5°FBeats 38%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FBeats 72%
  • Winter-long heating efficiencyHSPF2Beats 73%
  • Summer-long cooling efficiencySEER2Beats 76%
  • Hot-day cooling efficiencyEER2Beats 67%

Average (50%)

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

Want Relief Sciences’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.

  • 100%

    meet CEE 2025 Tier 1, the level many utility rebates use.

    10 models. All brands: 48%.

    See them

  • 90%

    meet Xcel Energy Colorado’s cold-climate rebate levels.

    9 models. All brands: 38%.

    See them

  • 0%

    reach the cold-climate tier: full heating output and a COP of 2.1 or more at 5°F.

    None of its models yet. All brands: 1%.

Top Relief Sciences cold-climate picks, by size

Only units that keep at least 70% of their heat at 5°F, ranked on heat kept, efficiency at 5°F and seasonal efficiency (HSPF2), against units their size.

Showing Ducted, 2.5–3 tons (27,000–38,999 Btu/h cooling). What size is my system?

2 of Relief Sciences’s 4 models of this size and type qualify.

  1. 1LANG27OD35-3Relief Sciences2.5 tons · 28,000 Btu/h · DuctedKeeps 90% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    90% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.76 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.5 (HSPF2)
    Great
    65.0score / 100
  2. 2LANG36OD35-4Relief Sciences3 tons · 36,000 Btu/h · DuctedKeeps 89% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    89% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.70 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.0 (HSPF2)
    Top 10%
    64.2score / 100

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 Relief Sciences’s ranks on each rating, its models inside every size and type, cold-weather curves and its newest certifications.

Open the advanced view