Leak Test W/compressed Air - HVAC - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC


Thread Tools Display Modes
Old 11-27-2006, 10:04 AM   #1
Join Date: Nov 2006
Posts: 291
Rewards Points: 250

Leak Test w/compressed air

Yes, I know it's a big no/no to every do a leak test with compressed air or oxygen AND refrigerants.

However for a new install is it OK to leak test just the lineset and coil with compressed air prior to evacuation and opening the HP valves?

I believe coils come with a holding charge of nitrogen. So why would compressed air mixed with nitrogen be a concern?


hennyh is offline   Reply With Quote
Old 11-27-2006, 10:12 AM   #2
Thoroughbred Mopar Man
Join Date: Oct 2006
Location: South/East Kansas
Posts: 638
Rewards Points: 500

Hi hennyh

I would advise against using compressed air for a leak checking media. There is more in compressed air than just moisture. This does not however mean that you cannot use air. When you introduce the air if it is from a oil type air compressor it will always have a trace amount of oil in the air. The oil that is in your compressor will gum up when it comes in contact with the mineral or poe oils, this will cause problems with the refrigerant metering devices. An oiless compressor would be a safer bet if you are going to use air.

Good luck


#CARRIERMAN is offline   Reply With Quote
Old 11-27-2006, 04:36 PM   #3
Join Date: Nov 2006
Location: NW Ohio
Posts: 108
Rewards Points: 75

Nitrogen is the only acceptable medium in a refridgeration system for leak testing. It is inert and will not contaminate the system.
acefurnacefixer is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
pipe leak & sheetrock damage santogr General DIY Discussions 2 03-04-2007 01:44 PM
Minute Gas leak rjordan392 Plumbing 3 11-12-2006 10:59 AM
Sewer leak below slab. Debris in sand. martin52 Plumbing 2 10-20-2006 08:43 AM
Bleeder Valve Leak jwfran Plumbing 1 05-08-2006 08:12 PM
Hot water heater leak? chrisintroy Plumbing 3 02-27-2006 09:13 AM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1