hvac1000
Jun 25, 2009, 11:54 PM
SEE this thread. You already have your answers
https://www.askmehelpdesk.com/heating-air-conditioning/instaling-22-freon-unit-same-installing-new410-freaon-unit-368907.html
siberianair
Jun 28, 2009, 05:37 PM
You call a qualified and certified tech to come do it for you... if you don't have 410a certification you are not legally allowed to handle the refridgerant. Also if you not certified in refridgerants at all you can't handle any of them.