KeplerX vs TKS: heat pump ratings compared
Against heat pumps of the same size and type, a typical KeplerX model beats 53% and a typical TKS model 50%. KeplerX rates slightly higher overall.
Covers older R-410A heat pumps, no longer installed new. See models sold today · Updated
KeplerX
53%
of similar heat pumps beaten by its typical model
About average8 models listed
TKS
50%
of similar heat pumps beaten by its typical model
About average8 models listed
- Efficiency on a 5°F dayCOP at 5°FKeplerX: Beats 49%TKS: Beats 34%
- Heating power kept at 5°FCapacity at 5°F vs 47°FKeplerX: Beats 78%TKS: Beats 35%
- Winter-long heating efficiencyHSPF2KeplerX: Beats 33%TKS: Beats 57%
- Summer-long cooling efficiencySEER2KeplerX: Beats 22%TKS: Beats 66%
- Hot-day cooling efficiencyEER2KeplerX: Beats 54%TKS: Beats 48%
Average (50%)Dashed outline: the other brand, for comparison
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Rebate standards
CEE 2025
- KeplerX
- 0%
- TKS
- 63%
Xcel CC
- KeplerX
- 0%
- TKS
- 25%
CEE Advanced
- KeplerX
- 0%
- TKS
- 0%
ENERGY STAR CC
- KeplerX
- 0%
- TKS
- 0%
Top cold-climate picks, ductless up to 1.5 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, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?
KeplerX
No ductless, up to 1.5 tons model from KeplerX.
TKS
None of TKS’s ductless, up to 1.5 tons models qualifies.
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.
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