Any reason R134a could not be used to pressure test a R410a line set on a heat pump ? Instead of Nitrogen .
The R134a should be removed when you vacuum down the system ?
And , yes , I have an EPA card .
Thanks :-)
Wyr
The R134a should be removed when you vacuum down the system ?
And , yes , I have an EPA card .
Thanks :-)
Wyr
Pressure test
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