Results 1 to 4 of 4
  1. #1
    Join Date
    Jan 2012
    Post Likes

    What would you do?

    Built a home in Phx, AZ. a few years ago. Had the HVAC contractor put a larger heat pump in to accomodate an addition that would be built at a later time. The addition is 300 sq. ft., above a garage, and is the only room above the single level home. My dilemma is, do I consider tying into the existing air handler utilizing an adjustable duct damper , consider going with a minisplit or possibly putting in a new 1 ton heat pump? Suggestions?

  2. #2
    Join Date
    Apr 2011
    SE Washington
    Post Likes
    if the original was sized for this then thats your most economical route
    Total Energy Management, inc., Carrier Presidents Award 2011, 2012, 2013

  3. #3
    Join Date
    Oct 2011
    south al.
    Post Likes
    Agreed! you need to utillize the extra btus from that unit. You can install a mortorized damper and thermostat in that area but it would only open and close the damper and not control the system on and off. In other words you would only get air in that room if the main stat is calling.

  4. #4
    Join Date
    Feb 2009
    Portland OR
    Post Likes
    Chances are your system was oversized before the second overszing that you asked for. If you add a zone with a damper you may be trying to force X amount of air through a duct that is sized for Y amount of air. How many sq feet is the home vs the new addition? Do you know what size equipment you have on the home and most importantly what your heat loss and heat gain is?
    Check out my YouTube channel - We have customer testimonials, product reviews and more!
    Like us on FACEBOOK if you like our advice here!

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event