Ask Your Question

Angie's List Answers is the trusted spot to ask home improvement and health questions and get answers from service companies, health providers and consumers. For ratings and reviews on companies in your area, search Angie's List.

Top 30 Days Experts
Rank Leader Points*
1 kstreett 240
2 Guest_9020487 110
3 Guest_9190926 105
4 GoldenKid 100
5 ahowell 95
6 KnowledgeBase 95
7 skbloom 80
8 Guest_98024861 70
9 Guest_9311297 70
10 Guest_9400529 70

*Updates every 4 hours

Browse Projects By Category

Question DetailsAsked on 4/27/2015

can you put a R22 compressor in a unit that had a R410A in it and put R22 back in the unit

Compressor bad in 3 ton 410a unit have a compressor for R22 can it be changed and put R22 back in system

Do you have the same question? Follow this Question

2 Answers


Absolutely not, different engineering and design for each refrigerant.


Answered 5 years ago by BayAreaAC


As BayAreaAC says, highly unlikely. R410A (the new most common residential refrigerant gas) was not designed to run in R22 (Freon) units, so it runs at different pressure in the lines, has different evaporation/condensation temperature, uses a different compressor lubricant in it, etc. So even if you had one of the convertible compressors usable with both gases (rare, and very rare for residential sizes), the system would have to be chemically flushed out to remove the old oil, possibly change condensor coil size, possibly change the evaporator coil (or at least the throttling choke or expansion valve on it as applicable depending on design, if a variable capacity one), and change out the flow control valve and control board to run with R22 - so basically not worth it even if you could because you would basically be replacing the rest of the system to be compatible with R22.

Not to mention using R22 is going to cost hundreds (possibly as much as $500+) more to refill with R22 than with R410 now, and much more in the future as R22 is phased out. There is also a bill in congress to outlaw putting new compressors on R22 units in repairs (because so many "dry" R22 units are being installed on old systems to get around the current law) so R22 systeams may become totally unavailable or unrepairable in the next couple of years.

Far cheaper to buy a new compressor, asuming that is what failed - and of course find and cure the issue that caused the compressor failure, because if a 410A unit it probably did not die of old age, but rather due to inadequate cooling or lubrication or running too long a cycle because of thermal overload or frozen up evaporator or such.

Answered 5 years ago by LCD

Related Questions

Terms Of Use
Privacy Policy