Lowest GWP Refrigerants. The main reasons why R-454B, which is manufactured by Chemours under the trade name Opteon™ XL41, has become one of the leading contenders to replace R-410A is that it closely matches the properties and performance of R-410A while having a GWP under 500. “R-454B offers comparable capacity with improved energy
R32, better known as difluoromethane, is an organic gas, much like R410A. With an ODP of 0, the two gases are also equally harmless to the ozone layer. Still, R32 has a GWP of 675, which is significantly lower than those of R22 and R410A. That makes it a seemingly better alternative. R32 performs well in terms of pressure drop and heat transfer. There is no need to replace costly equipment when performing a retrofit on existing R-22 systems as MO99 refrigerant has the best compatibility with existing systems. 3. The MO99 option is time efficient when performing the retrofit. Replacing the R-22 components is no more time consuming than recharging the original system. 4. The results obtained showed that the VCC of new refrigerant mixture composed of R32/R125/R600a (in the ratio of 0.4:0.4:0.2, by mass) is closer to R22. Hence, new refrigerant mixture can be usedGoodman sells dry units suitable for replacing R22 condensing units where its a pain to replace the indoor unit with one suitable for 410A. On the heat pump units you have to change out the orifice for one sized for R22, but that's a 2 minute job and 10 bucks or so for the part.
R-32, A Replacement for R-410A. Why Are We Replacing R-410A? What is an A2L? A guide to the switch from HFC to HFO; Are There Retrofits for R-410A? Is R-410A still available? R-32 – A Lower GWP Alternative to R-410A; R-32 For You - Save Money; Safe Handling and Storage of R-32 Cylinders; Working Safely With Forane R-32