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

The refrigerant switchIn the newest certifications, R-410A is down to 0%. The oldest certifications still listed were almost all R-410A.

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, up to 1.5 tons

By AHRI reference number, newest first.

Showing Ductless, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

  1. 1WLWHD(18)ND3POTRUENORTH1.5 tons · 18,000 Btu/h · DuctlessGreat1.92

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