Calibrate AC Manifold Gauges (Before You Use Them)

You should calibrate AC manifold gauges before you use the gauges or the pressure readings won't be right.

[@dannyhefner]

thank you for this information! my gauge wouldnt move past 25m when trying to vacuum my ac system. noticed it wasnt on 0 when first connecting it up. this was the solution!

[@aqrealestateking]

Thank you!! Sweet and simple

[@ivanechevarria7430]

Thank you. I almost threw away a set a perfectly working gages.

[@frugaldiy1]

You're welcome. Soooo glad to hear you didn't toss the gauges. Good for you! ;)

[@quivsterderilo1244]

Short but very informative

[@duckhunter8387]

Just what I needed

[@DavidLopez-po6pb]

Thanks

[@frugaldiy1]

You're welcome, David. ;)

[@boloyung88]

Do I need to release all the presssure first

[@jameswright4777]

thank you

[@frugaldiy1]

You're welcome, James. ;)