Results 1 to 10 of 10
  1. #1

    Confused Mismatched air handler

    Trane 3.5 ton condenser
    Trane 3.0 air handler
    2000 sq ft home-10 yrs old

    Air handler coils ice and drip from filter area.
    Energy bills have gotten outrageous-approaching $500
    Service man cannot balance system.

    Would a matching air handler improve efficiency enough to offset replacement or should I replace entire unit?

  2. #2
    Join Date
    Aug 2008
    Posts
    322
    You are trying to cool 2000 sq. foot home with a 31/2 ton unit no wonder your elect bill is so high I have a 5 ton on my 2000sq ft. home When the temp hits 100 it has arough time just keeping the home at 78 I would look into may be going a little bit bigger on the tonnage.

  3. #3
    Join Date
    Mar 2007
    Location
    NW AR
    Posts
    2,475
    3.5 will cool 2000 in some instances. The main issue is the 3 ton a/h matched to a 3.5 ton cond. He will never get it to balance. It should have never been installed like that. Did you get a used one cheap or something???
    You should have a 4ton a/h and yes it would absolutely improve efficiency.

  4. #4
    Join Date
    Jul 2001
    Location
    Gold Coast of Connecticut
    Posts
    4,543
    Like a bigger unit will save energy..........hmmmm.!

    You should look into installing a matched system in your home of the correct size to properly cool your home.
    Aire Serv of SW Connecticut- Gas heat, dual fuel and central a/c systems installed and serviced

  5. #5
    Join Date
    Mar 2007
    Location
    NW AR
    Posts
    2,475
    Even a mismatched 3.5 with a 4 ton coil would beat what hes got.

  6. #6
    The system was in the house when I bought it. I know a guy who will can install a 3.5 ton air handler for a reasonable price. Should I look at the 4 ton?

  7. #7
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    66,803
    You said teh bills have gotten out of hand, were they reasonable at one time.

    What area do you live in.
    Is it a high humidity area.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  8. #8
    Join Date
    May 2007
    Location
    Naples, Fl
    Posts
    889
    1. 3.5 tons on 2000 ft is not out of line,
    2. The system maybe correct (matched); Trane engineers systems like this; providing that both units are made by Trane.
    3. As Been noted; has something changed?
    4. Arbitrarily doing anything is just that.
    Last edited by adrianf; 10-29-2008 at 08:02 AM.

  9. #9
    Was dripping pretty bad. Serviceman overcharged system to stop drip. Next power bill was high. He took some freon out and bill came back down some,but started dripping every now and then. System just won't balance. Live in deep south with high humidity. Worried because winter bills are usually a good bit higher. By the way, swimming pool accounts for about 75-100 of the 500 dollar power bill. Just wondering if changing the air handler so that the system will balance will get my efficiency where it needs to be. Thanks!

  10. #10
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    66,803
    Ok.
    It may have been installed like this to remove more humidity.
    On systems like this, you need to still keep the air flow up closer to what the outdoor units nominal rating is.

    Good chance it needs a good cleaning.

    You need a tech that can check performance.
    Not just grab the suction like and add gas until its cold. Or just adds gas until teh vapor pressure is above freezing.

    When you do have it replaced. Consider a VS blower. It will aid in moisture removal. And you can have a system where teh indoor and outdoor units are a closer match in size rating.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

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