New heat pump models
Since 2025, new heat pumps are made with R-454B or R-32 refrigerant instead of R-410A, which is being phased down. Here is that switch, and the newest certified models of the size class you pick.
Covers heat pumps sold new today (R-454B and R-32 refrigerant). See older R-410A models · Updated
Each bar: 500,000 AHRI certifications in a row. AHRI numbers rise over time, so they stand in for dates, which AHRI does not publish. Source: AHRI directory.
What the switch means
R-454B and R-32 warm the planet far less than R-410A if they leak. Heat pumps already installed with R-410A can still be serviced; the phase-down limits how much new R-410A is made. The two kinds use different parts, so they are listed separately here.
Newest models: ductless, 3.5–4.5 tons
Showing Ductless, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?
None of the 25 newest certifications is a ductless, 3.5–4.5 tons model. Try another size.
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 shows every reference band of the switch and the full list of newest certifications.
Open the advanced view