Anyone using an R32 Mini-Split

[ultgar]

With R410a going away in 2023-2024, has anyone installed an R32 mini-split (or central system) in their home or garage? Not a fan of R454b as a drop-in replacement due to cost, efficiency, etc. The world outside of North America has been using R32 cooling since 2012 and the only place I see it is with window or portable AC units or on the Daiken website. The Mitsubishi MSZ-LN or MSZ-EF lines (both R32 systems) are not available for purchase here in the US.

 

[jjrbus]

Recently bought a LG window unit, R32, you should see the inside of that thing compared to 134A! https://www.coolingpost.com/world-news/lg-supply-r32-air-conditioners-in-the-us/

 

[bonneyman]

"Mildly flammable" sets my sensors off right away.

 

[ultgar]

Yes...the new refrigerants are slightly more flammable but unfortunately R410a is going away soon. At some point in time, you won't be able to buy R410a. Not a big deal for a window unit but if you've just spent $10k on a Trane variable speed system, you'll want to keep that running for 10-15 years. According to Lennox, the drop in replacement for R410a (ie, R454b) is more combustible than R32..... https://www.coolingpost.com/world-news/lennox-backs-r32-as-optimum-replacement/

 

[PoorUB]

Europe has used propane as a refrigerant for years. Leaks are not generally a problem as they leak so slow to cause a fire or worse, an explosion.