Quote:
Originally Posted by AustinChief
I know the coils need to be replaced, they are the problem. It's just a question of replacing them and staying R22 or replacing the evap/coils AND replacing the heat pump's condenser to go R410 ... if that is even possible... or replacing the whole system inside and out.
One of the biggest issues is the placement of the air handler.. I honestly have no clue how they got it installed in the first place. It is huge and the the access is not.
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You cannot mix a 410a system with a r-22 system in any manner. Those refrigerants have different boil points so they will change from a liquid to a gas state at different pressures. They also use different expansion valves. The refrigerants operate at completely different pressures. The 410a is a lot higher pressure. If you put a 410a compressor on a r-22 indoor coil the compressor would blow out the u bends in the indoor A coil.
Yes they should upgrade because it will be cost prohibitive in the future if they do not. The drop in replacement for R-22 is more expensive than 410a. 410a refrigerant will only get cheaper. That replacement for the R-22 will continue to get more expensive because there is and will continue to be less and less in use.