Record holders, size class by size class
The highest certified value on each single rating, in each size class. A record is one rating, not an overall verdict; for that, see the cold-climate picks. A record across all sizes would mostly go to the smallest units, so each record here is for one size and type.
Covers older R-410A heat pumps, no longer installed new. See models sold today · Updated
Records: ducted, 2.5–3 tons
Showing Ducted, 2.5–3 tons (27,000–38,999 Btu/h cooling). What size is my system?
Efficiency on a 5°F day
3.44
COP at 5°F
THE2B42T21York (sold as Luxaire)
3 tons · 37,200 Btu/h · Ducted
Heating power kept at 5°F
139%
Capacity at 5°F vs 47°F
THE2B30T21York (sold as Coleman)
2.5 tons · 28,400 Btu/h · Ducted
Winter-long heating efficiency
11.7
HSPF2
NTXSKS30A112**Mitsubishi Electric (sold as Trane / Mitsubishi Electric)Also listed as SUZ-KA30NA
2.5 tons · 27,000 Btu/h · Ducted
Summer-long cooling efficiency
22.2
SEER2
3 tons · 33,400 Btu/h · Ducted
These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.
Smaller brands worth a look
Efficiency on a 5°F day: its typical model beats 74% of similar heat pumps, against 54% for the 5 largest brands.
Next steps
The advanced view has the all-sizes records with runners-up, the best of every size class in one table and the full list of smaller brands.
Open the advanced view