R-32 Heat Pumps: What to Know and Which to Buy

Need something different?

• 

  A 2-ton home

  Goodman GLZS4BA2410 + AMST24BU1300

  15.2 SEER2, 7.5 HSPF2 (AHRI). Outdoor unit + air handler, R-32.

  $3,240 on Amazon
• 

  A 4-ton home

  Goodman GLZS4BA4810 + AMST48CU1300

  15.2 SEER2, 7.8 HSPF2 (AHRI). Outdoor unit + air handler, R-32.

  $4,910.07 on Amazon

Who makes ducted R-32 heat pumps

Most R-32 heat pumps are ductless: about 8 in 10 certified on R-32 are mini-splits. Among the ducted ones, Gree, Tosot, Daikin and Goodman have the most certified systems. Goodman is the one sold on Amazon as a full outdoor unit and air handler; the rest come through installers.

Before you buy an R-32 system online

1. Book the installer first. Goodman's warranty depends on a licensed install, and charging the refrigerant needs EPA Section 608 certification.
2. Replace both halves. R-32 needs a new outdoor unit and a matched indoor unit; it cannot top up or pair with an R-410A system.
3. Size it first. Match the size in your old outdoor unit's model number, or ask for a load calculation. The size pages: 3.5 tons · 4 tons · 5 tons.

R-32 or R-454B?

For a homeowner, neither is clearly better. Both replace R-410A, both are rated mildly flammable (A2L), and the installer handles both. Choose the system on certified SEER2, HSPF2 and heat at 5°F. If you want a DIY mini-split, most on Amazon use R-454B.

Questions buyers ask

Does Goodman use R-32?

Yes. Every Goodman GLZS4 heat pump we matched uses R-32, per its AHRI certificate, including our pick, the Goodman GLZS4BA3610 + AMST36CU1300.

Is R-32 safe in a house?

It is rated mildly flammable (A2L), so new R-32 systems are built to newer safety standards and installers follow new handling rules. That is the installer's job, not yours.

Can I still buy an R-410A heat pump instead?

Under EPA's May 2026 rule, an R-410A system made or imported before January 1, 2025 can still be installed; one made later cannot. New York's own rule bans new R-410A installs. Check the nameplate date.

Can I install an R-32 heat pump myself?

Not a ducted one. The lines must be connected and charged by an installer with EPA Section 608 certification, and Goodman's warranty depends on a licensed install.