Expansion valve/heil question
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Expansion valve/heil question
I am trying to find out if my 2 1/2 and 5 ton, 14 seer, R-22 air handlers have an expansion valve. Which line do I follow in to the system? the small one? If not in side unit where else could it be installed? Also is there anywhere I would be able to buy the parts for cheaper than the installer will charge me?