Replies

1. GBA Editor
   Kiley Jacques | Dec 14, 2020 11:19am | #1

   I’m going to give your question a bump. In the meantime, read through this Q&A thread. Another reader asked the same question back in May.

2. 
   walta100 | Dec 14, 2020 06:38pm | #2

   This from Daikin website

   “As the only manufacturer that develops and manufactures both air conditioners and refrigerants, Daikin launched the world's first residential-use air conditioner
   using R-32.”

   Most manufactures will not willingly do business with their competitors if at all possible.
   My guess is you will see it in Daikin units but nowhere else unless it is the last legal option open to other manufactures or the patent expires.

   Walta

3. 
   gunalan | Jul 12, 2021 07:27pm | #3

   It appears as though its Honeywell that is blocking the adoption of R32 into code!

4. 
   capnkent | Feb 25, 2022 12:20pm | #4

   We have an active HVAC contractor that has been talking with engineers in the industry - they are saying it will be an industry wide transition starting this summer. The R32 has reduced efficiency and as such it is expected that AHRI is going to start re-rating the equipment as the rollout of R32 occurs. Here in the PNW we have some high bars to reach for code and it is expected to throw a big wrench meeting basic code requirements. We've reached out to others in the industry to verify and learn more...

1. 
   Kaivorth | Apr 27, 2022 10:42am | #5

   R32 has reduced efficiency? Everything I've read up on claims increased efficiency?

5. 
   user-5946022 | Apr 15, 2024 10:00am | #6

   Giving this question another bump. It's been 4 years, and installers are still quoting R410A. Seems like in 2024 we should be further advanced than that. What's going on with the transition to R32?

6. GBA Editor
   Patrick Mccombe | Apr 15, 2024 10:18am | #7

   HI GBA,
   Last week I talked to a pair of professionals at American Standard who answered some of my questions regarding the transition away from R410A. The transition is starting in January of 2025. The EPA has an overwhelming amount of info on their website. Here's some starter information: https://www.epa.gov/climate-hfcs-reduction/frequent-questions-phasedown-hydrofluorocarbons#homeowner-AC-split

7. 
   proposterosa | Apr 15, 2024 11:07am | #8

   There do seem to be a few products available now or soon from Chiltrix, Spacepak and Gradient (two air-to-water, and one window unit):

   https://www.chiltrix.com/CX50-air-to-water-heat-pump/CX50-spec-sheet.pdf
   https://www.blueridgecompany.com/radiant/hydronic/851/spacepak-solstice-air-water-heat-pumps
   https://www.gradientcomfort.com/products/gradient-all-weather-120v-window-heat-pump

   And it looks like one new one:
   https://www.usboiler.net/u-s-boiler-company-introduces-the-ambient-hydronic-heat-pump.html