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Can A R22 Coil Be Used With 410A Condenser
Can A R22 Coil Be Used With 410A Condenser. Some of these units can be either or…have to be verified. The metering device (piston or txv) is the key.

Recommend verification with the manufacturer or qualified hvac contractor whether these two units are compatible and replace components as necessary. I have a rheem gas fired forced air furance model# xxxxx. Not sure who thought it was a wise decision to stick with.
The Old R22 Compressors Were Not So Picky.
If the metering device is changed to match the refrigerant being used there should be no issue whether it is a txv or a piston so long as it is made to handle 410 or 22. The metering device (piston or txv) is the key. The air handler was manufactured in 2001.
Other Than Knowing The Charge Of R410A Refrigerant In The Condenser Will Not Be Adequate For The R22 Coil And Be Ready To Add More, The System Should Function Properly.
The condenser was just replaced with a 410a unit. Disclaimer, i will only change out a manufactured house system if coil and condenser. The coils allow for both but in his case it was originally set up for 410a.
You Can't Just Adjust It Because The Sensing Bulb Needs To Be Charged With A Refrigerant With A Similar Or The Same Pressure/Temperature Relationship As The Refrigerant The System Uses.
The reasoning is that the pressure would double on the 10 year old coils and that it would likely to develop a leak in the near future. My son’s unit has a check box for “field modified” to r22 on the inside of the air handler. It is common to replace a r22 condenser with a r410a condenser, keep the evap coil and change piston or txv to match.
Mortex Coils For Manufactured Housing Are Universal R22/R410A.
One quote is to replace just the condenser and the other quote from another hvac co includes new evaporator coils. There is no reason to believe that the 410a condenser only install will have more problems, be less effective at cooling or will not last as long with or with out a matched coil. If you're changing out a r22 condenser for 410a, you have to get a 410a txv.
Other Than Knowing The Charge Of R410A Refrigerant In The Condenser Will Not Be Adequate For The R22 Coil And Be Ready To Add More, The System Should Function Properly.
A coil can be designed for both r22 and r410a. Not sure who thought it was a wise decision to stick with. The proposed new evaporator is the exact same model etc that is currently installed.
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