What does everyone pressure test at? Years ago, senior techs used to tell me that N2 was inert and didn't change pressure with temp. Years later, find out that inert means non reactive and it definitely does have a pressure change. I know there's calculators but I've found that for approximately every 10⁰F there is approximately 1 psi change in pressure. Anyone else notice this?

Posted by HVAC Know It All at 2021-05-16 19:30:52 UTC