Return to the Heating & Air Conditioning Forum | Post a Follow-Up

 o
Installing furnace in attic tomorrow - what to watch for?

Posted by thedork (My Page) on
Mon, May 20, 13 at 16:06

The contractor is very good but I still want to discuss all the major potential issues - leveling, drain etc.

What should I be concerned about and address that upfront so they are reminded to do the job right.

It is a basic 80% one stage Carrier.

Thank you!


Follow-Up Postings:

 o
RE: Installing furnace in attic tomorrow - what to watch for?

I assume you also have an AC condenser and coil as part of this furnace installation. If that is the case then proper drainage is a concern. You want a properly pitched drain with a trap that you can easily clean. The EZ-Trap see through drain would be nice to have. You want a secondary drain pan in case there is ever a problem.

Get a 4 inch media filter installed where the return meets the furnace. You will have to go into the attic once a year to replace it. The duct work should be a minimum of R8. Any hard ducts should be sealed with mastic and covered with insulation.

I would like to see the gas line be black pipe all the way to the furnace with a drip leg.

This post was edited by mike_home on Tue, May 21, 13 at 8:09


 o
RE: Installing furnace in attic tomorrow - what to watch for?

Drain pan with automatic cut off switch...


 o
RE: Installing furnace in attic tomorrow - what to watch for?

Very good suggestion on the cut off switch.


 o
RE: Installing furnace in attic tomorrow - what to watch for?

There is no AC unit just furnace - thank you all!


 o
RE: Installing furnace in attic tomorrow - what to watch for?

so, how did it go?
did they mastic seal furnace to supply/return plenums?

check & see if your ductwork is mastic sealed where
ducts leave plenum?

mastic dries to either a gray or white finish.
it should be a thick application with no gaps or
voids.

most homes have duct leakage, 30% seems
to be average. so over 1/4 of the air you
pay to condition...doesn't make it into the house.

mastic sealing ducts, plenums, returns & supply
boxes has a fast payback and immediate effect
on flow of air into the house.

best of luck.


 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 Heating & Air Conditioning 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