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Any thoughts on 427a for r22 replacement

25K views 17 replies 10 participants last post by  droopylee95 
#1 ·
Looking for a refrigerant that does not contain propane that will also work well in residential a/c and heatpumps. Has anyone used this and do you have to change out the oil they claim no components need to be changed.

Mineral oil and alkylbenzene are often acceptable with R-427A if the system has an oil separator and reliable oil return with R-22. Otherwise the oil must be changed to POE. If POE is required, usually only one change-out of the existing lubricant is needed, as R-427A can tolerate high levels of residual mineral oil or alkylbenzene remaining in the system. :001_unsure:
 
Discussion starter · #3 ·
MO99 contains propane and I understand that manufactures will not warranty there product if we retrofit with this and if a leak accrues there is a probability of a fire what is your understanding on this?
 
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