Page 1 of 2 12 LastLast
Results 1 to 13 of 18
  1. #1
    Join Date
    Jun 2006
    Posts
    18
    Replacing an old 1.5T HVAC unit upstairs that has 3/8”and 5/16” Line set.

    Option 1

    Replace with a new 1.5-ton, 14, SEER, Lennox unit (Freon 22) and a 80% Variable speed gas system, with out changing the line set. (Cheaper by 2500$) (1100 Sq. Foot upper floor)

    Option 2

    Replace with a New 2 ton 16 SEER Lennox/Trane unit (410a) that requires addition of new line set, couple of additional supply vents, and one return vent. Expensive by 2500$

    Contractor 1 recommends option 1, but willing to do option 2
    Contractor 2 recommends option 2

    What are your thoughts

    Thanks

  2. #2
    Join Date
    Sep 2002
    Location
    I don't know
    Posts
    2,903
    If your current 1.5 ton unit cools properly, don't upsize. Oversized systems consume more energy and don't remove enough humidity.

  3. #3
    Join Date
    Jun 2006
    Posts
    18
    Even a .5 Ton increase can affect humidity and energy ?

  4. #4
    Join Date
    Nov 2004
    Location
    SW FL
    Posts
    6,295
    Originally posted by nagaseth
    Replacing an old 1.5T HVAC unit upstairs that has 3/8”and 5/16” Line set.

    Option 1

    Replace with a new 1.5-ton, 14, SEER, Lennox unit (Freon 22) and a 80% Variable speed gas system, with out changing the line set. (Cheaper by 2500$) (1100 Sq. Foot upper floor)

    What are your thoughts?
    Location?
    Designer Dan
    It's Not Rocket Science, But It is SCIENCE with "Some Art". ___ ___ K EEP I T S IMPLE & S INCERE

    Define the Building Envelope and Perform a Detailed Load Calc: It's ALL About Windows and Make-up Air Requirements. Know Your Equipment Capabilities

  5. #5
    My take, option 1 if you have had satisfactory cooling with 1.5 ton before.

  6. #6
    Join Date
    Jul 2001
    Location
    Gold Coast of Connecticut
    Posts
    4,587
    Originally posted by nagaseth
    Even a .5 Ton increase can affect humidity and energy ?
    YES!

  7. #7
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,125
    Originally posted by nagaseth
    Even a .5 Ton increase can affect humidity and energy ?
    Its possible.

    .5 ton is 33% increase on a 1.5 ton.

    If the 2 ton unit is 2 stage, then you should have no trouble.
    Contractor locator map

    How-to-apply-for-Professional

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

  8. #8
    Join Date
    Jun 2006
    Posts
    18
    My Location : North Metro Atlanta

    I was thinking that 2T with 16 SEER is a better choice because 1) Energy saving 2) Better cooling 3) Latest Technology

    I now realize that 1.5T is the ideal unit after reading all your opinions. Why dont manufacturers make 1.5T with 16 SEER rating ?

  9. #9
    Join Date
    Jun 2006
    Posts
    18
    Sorry, I for got to add. 2T is two stage (Trane XL16i)

  10. #10
    Join Date
    Jul 2001
    Location
    Gold Coast of Connecticut
    Posts
    4,587
    2 Ton 2 stage is the better choice so you get the high seer.

  11. #11
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,125
    2 ton 2 stage is better then 1.5 ton single stage.
    Contractor locator map

    How-to-apply-for-Professional

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

  12. #12
    Join Date
    Jul 2002
    Location
    Zelienople, Pa
    Posts
    2,965
    I finished my 950 square foot bonus room on the 2nd floor of my house and installed a heat pump myself.
    The load came to just under 1.5 tons so I installed a Trane XL14i 1 1/2 ton w/ a variable speed ahu.
    I really wish I would've used the XL16i 2 ton 2 stage because when I have company over or when its 95+ degrees it does have a little trouble keeping up with the demand.

  13. #13
    Join Date
    Jun 2006
    Posts
    18
    Thanks

    Why cant contractors quote separately for the unit and separately for Installation. This way I know how much a XL16I costs and how much they bill for installation

    Is it customary in HVAC field that prices are kept confidential? So that customer cannot compare the cost effectiveness of contractors

Page 1 of 2 12 LastLast

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