Jump to content

HVAC Primary Drains


robert1966
 Share

Recommended Posts

What do you think about primary HVAC lines on homes that drain into one or more of the sinks. I know this is allowed in our area and is quite common, even in my home.

But these lines and the P-trap at these sinks seem to clog a lot more frequent than when the HVAC lines drain to the exterior. I have spoke with several master plumbers and they all seem to agree that this is a bad system.

Input is appreciated

Link to comment
Share on other sites

The biggest problem that I have seen with HVAC drains is that the 1 1/2" or 2" drain that is provided by the plumber is too far away from the evaporator coil. The AC contractor responds by installing a much longer 3/4" condensate drain line to reach it. That 3/4" is going to plug up more easily and more often than the plumber's pipe. It's seldom a problem when kept short, but lengthen it and it's a constant headache especially with long level runs.

Marc

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...