https://www.coolingpost.com/world-ne...-breakthrough/

Honeywell have announced the development of a non flammable replacement for R410a.
This is great news as R32 was a purely stop gap refrigerant with no actual commercial viability due to its A2L flammable rating.

As a company we did not even consider R32 as an option and it was apparent that refrigerant manufacturers were going hell for leather to be the first to develop a low GWP non flammable refrigerant.