Skip to content
Rebate.Blue

Gridless vs Hessaire: heat pump ratings compared

Against heat pumps of the same size and type, a typical Gridless model beats 60% and a typical Hessaire model 50%. Gridless rates higher overall.

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

Gridless

60%

of similar heat pumps beaten by its typical model

Well above average

11 models listed

Hessaire

50%

of similar heat pumps beaten by its typical model

About average

11 models listed

Rating by ratingEach bar is the share of same-size, same-type heat pumps that a typical model beats, so the two brands compare fairly even if they make different sizes.
  • Efficiency on a 5°F dayCOP at 5°FGridless: Beats 40%Hessaire: Beats 35%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FGridless: Beats 77%Hessaire: Beats 50%
  • Winter-long heating efficiencyHSPF2Gridless: Beats 60%Hessaire: Beats 39%
  • Summer-long cooling efficiencySEER2Gridless: Beats 68%Hessaire: Beats 46%
  • Hot-day cooling efficiencyEER2Gridless: Beats 56%Hessaire: Beats 31%

Average (50%)Dashed outline: the other brand, for comparison

Want ranks, distributions per size class and cold-weather curves? Switch to Advanced

Rebate standards

Share of each brand’s models that meet the level. Programs can have other rules too.

  • CEE 2025

    Gridless
    100%
    Hessaire
    55%

  • Xcel CC

    Gridless
    100%
    Hessaire
    36%

  • CEE Advanced

    Gridless
    0%
    Hessaire
    0%

  • ENERGY STAR CC

    Gridless
    91%
    Hessaire
    36%

Top cold-climate picks, ductless 2 tons

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

Gridless

  1. 1O-AYD24SD-3Gridless2 tons · 24,000 Btu/h · DuctlessKeeps 100% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.1 (HSPF2)
    Good
    56.8score / 100
  2. 2O-AYD24SD-1with ductless indoor unit I-AYD24W-1Gridless2 tons · 24,000 Btu/h · DuctlessKeeps 95% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    95% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.76 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    55.6score / 100

Hessaire

  1. 1H24E2with ductless indoor unit H24E2Hessaire2 tons · 23,000 Btu/h · DuctlessKeeps 78% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    78% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.75 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    8.6 (HSPF2)
    Below the middle
    32.2score / 100

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

Next steps

The advanced view adds ranks, both brands’ models inside every size class, standout models per rating and cold-weather curves.

Open the advanced view