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  1. #1

    Is this quote correct?

    I got a quote from a contractor to put in a new AC unit + Evaporator coil.

    The quote he gave me was this:
    Trane 15-Seer 3-Ton AC/Evaporator Coil (compatible with existing furnance).
    The model number is 4TTX5036A1000A.
    The evaporator coil model is 4TXCB036BC3HCAA (aluminum).

    My existing furnace is a old furnace that is not a VARIABLE speed blower.

    Is this really 15 seer? I had a couple of other contractors say that the furnace cannot take more than 14 seer because it does not have a variable speed blower.

  2. #2
    Join Date
    Dec 2007
    Tucson Az
    Correct, it would take other elements to achieve 15 SEER, such as a 2stage or Variable Furnace (air Handler). 3 tons needs around 65-75 btu furnace. What part of the country do you live in? A 15 seer in San Diego is more 15 than in Southern AZ.
    Might want to do some home work or get another bid, just to ease your mind.
    "Well done is better than well said."
    Benjamin Franklin

  3. #3
    Join Date
    May 2007
    DC Metro Area (MD)
    13.75 SEER with no v/s furnace. Hard to get over 14 SEER without a v/s furnace.

  4. #4
    Join Date
    Jun 2008
    Sounds right about not being able to meet 15 SEER without a VS fan, but a better question is how did the contractor come up with that tonnage, since you didn't say if you have existing A/C?

    There are more posts on this forum than you can shake a stick at of contractors that either just quoted based on what was there, or took a swag based on square footage, or some other guesstimate. The contractor really needs to do the load calc to determine the correct size.

  5. #5
    Join Date
    Jul 2008


    IF you up sized the airhandler and use the energy saving blower motor you could get there with out that high $ v/s.

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