Expansion Valve(s)

Problems related to residential installations.

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Expansion Valve(s)

Post by USCGRetired » Wed Jan 08, 2014 1:20 pm

I have an American Standard Split System - TAM7 Air Handler (Indoor Unit) and 4TWB3030 Heat Pump (Outdoor Unit). The TAM7 Air Handler came with an installed Electronic Expansion Valve (EEV). Question is, should there be a second Expansion Valve (a TXV) installed at the 4TWB Heat Pump? The units are 35 feet apart (¾, ⅜ Line Set). Location is Central Kentucky.

I want to make sure I am getting the maximum efficiency out of the system.

I appreciate your help and insight! Thank you!

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