Return to the Plumbing Forum | Post a Follow-Up

question on venting water heater (orphaned water heater)

Posted by harveymasons (My Page) on
Sun, Aug 22, 10 at 18:10

Hi guys,

you guys are the pros and hoping you can hep me with this issue....

had a home inspection done on a house we are looking to buy, turns out owners put a new direct vent furnace in 6 months ago so basically the water heater is only gas appliance venting through original chimney now. There was no liner added either. How do I know if this is ok or not? from what I understand there could be issues b/c the current flu is most likely too big to just vent water heater alone and can cause some negative pressure issues?

Lastly the water heater is 14 years old so I am trying to get owners to replace it with a direct vent model based on it's age as well as how it is currently venteed now.......

owners are saying that it is a functioning water heater with no issues...

any help is greatly appreciated.



Follow-Up Postings:

RE: question on venting water heater (orphaned water heater)

Mechanical Codes require flues or chimney to be resized if appliances are removed and some appliances are left 'orphaned'.

It is likely that your home inspector uncovered a Code violation and unsafe condition because of this 'orphaned' water heater.

The simplest means to correct the problem is usually to replace the water heater with a new one and have that new water heater direct vented or power vented to the exterior.

This should be done at the current owner's expense.

Contact your local mechanical code inspector for details.

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Plumbing Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here