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  1. #1

    Converting from baseboard to ducts and heat pump Lennox XP14 or Trane XR 13

    These two estimates are the best complete with ducts and locally recommended. The trane dealer recommends a 3 ton, the lennox dealer says it will cycle on and off too much.
    House is in Virginia 3000 sq ft but 2 zones, 2 stories. both dealers recommended, price about even which is the better setup?

    Installer One
    Install 3 Ton XR13 Heat Pump with veriable speed air handler for 1st floor and basement(14.50 Seer,12.00 EER, 9.0 HSPF)

    Qty. 1- Trane 4TWR3036 - Heat Pump

    Qty. 1 TAM7AOC36 - Air Handler

    Qty. 1- BAYEVABC15BK - Heater


    Install 1 Ton XR13 Heat Pump for 2nd floor14.5 ,12, 8.2

    Qty. 1- Trane Heat Pump: 4TWR3018

    Qty. 1- Trane Air Handler: TAM4A0A18

    Qty. 1- Heater: BAYEAAC08BK





    Installer 2


    OPTION 1) 2 Lennox 15 Seer Elite XP14-018 Heat Pump Outdoor Unit



    2 Lennox Model # CBX27UH-018 Air Handler Indoor Unit



    2 Lennox Model # ECB29-05 KW Strip Heater

  2. #2
    Join Date
    Jul 2006
    Location
    Virginia
    Posts
    4,607
    a detailed manual j load calculation will determin what you really need .here in virginia it is better to go a little big on the cooling so you heat strips do not run all the time n heating season
    We really need change now

  3. #3
    Join Date
    Jan 2009
    Location
    Keokuk, IA
    Posts
    5,520
    Quote Originally Posted by catmanacman View Post
    a detailed manual j load calculation will determin what you really need .here in virginia it is better to go a little big on the cooling so you heat strips do not run all the time n heating season
    I'm not sure i adhere with that. VA is more a a southern climate than a mid Atlantic. Its pretty balanced and over sizing, especially upstairs will cause humidity issues on summer. I could are using a 2 ton 2 stage downstairs. Upstairs will probably rarely us strips anyway. On that climate with stack effect, net heat loads and gain will be about the same upstairs.

    A load calculations I'd best....but i like the way #2 is thinking.

    Sent from my DROID RAZR using Tapatalk 2

  4. #4
    Join Date
    Jul 2000
    Location
    Northern Wisconsin
    Posts
    1,976
    With the minimal information that you've supplied it's impossible to tell. It's like going to a medical bulletin board and asking: I'm 50 years old and have a heart condition, one doctor recommends I have open heart surgery and the other is recommending shunts. Which is better?

    If they both did a heating and cooling load calculation then they both should be able to show you the numbers that proves their case for their recommended system. With out that information they're guessing. Are you willing to spend X amount of $'s on someone's guess? Have them show you the proof that what they're recommending will "in their expert opinion" be the best for your situation. With heat pumps and electric back up I'd suggest you have them show you what they "think" will be your costs of operation in your area of the country. That would be another factor to weigh when making your decision.

    Good Luck.

    PS: Being a hydronics person I cringe whenever I see someone taking out hot water heat and replacing it with forced air heat.... especially if they've lived with it and are used to the comfort it provides.
    Use the biggest hammer you like, pounding a square peg into a round hole does not equal a proper fit.

  5. #5
    It's electric baseboard and no a/c currently. I'm going to have another estimate with load calculation done Monday. These others are just guesses but I can always ask for changes to estimates if I know what direction to go.

  6. #6
    Join Date
    Jan 2009
    Location
    Keokuk, IA
    Posts
    5,520
    Quote Originally Posted by firecontrol View Post
    PS: Being a hydronics person I cringe whenever I see someone taking out hot water heat and replacing it with forced air heat.... especially if they've lived with it and are used to the comfort it provides.
    I thought that at first too. But then I realized he never mentioned oil and I figured he was talking about electric baseboards. the only think worse is an electric furnace. At least baseboards create radiant heat, can't leak air ot unconditoned spaces and can be zoned. But in VA, a heat pump should use about 1/3 of the energy seasonally than baseboards plus you gain AC.

  7. #7
    Join Date
    Aug 2008
    Location
    Booneville, Mississippi, United States
    Posts
    259
    Lennox all the way. Been installing ams std, had lots of problems with tam7 control failurea. Swapped to lennox and life is so much better.

  8. #8
    Join Date
    Jun 2010
    Location
    Philadelphia PA
    Posts
    2,190
    You didn't say you were going to abandon your hot water system.
    I would suggest you consider a hybrid approach where you would extend your hot water system to HW coils in the air handlers so that the moderate temps of Spring and fall are covered with an air system and then with an outdoor stat, use the hydronis as stage 2 heating. If your system works now, why throw it out? Your outdoor set point ( balance point should be the temp where the heat pump needs to begin defrost cycles ( ask your contractors to explain
    You have got to learn from other people's mistakes! Because God knows you don't live long enough to make them all yourself !!!!!!!!

  9. #9
    Join Date
    Jun 2010
    Location
    Philadelphia PA
    Posts
    2,190
    Whoops, elec baseboard, forget hybrid but it doses raise the interesting question of using existing vs backup resistance heat
    Need to read and not scan
    You have got to learn from other people's mistakes! Because God knows you don't live long enough to make them all yourself !!!!!!!!

  10. #10
    Join Date
    Nov 2004
    Location
    SW FL
    Posts
    6,238
    VA = Mid Atlantic = only 1,350 CDD

    http://www.climate-zone.com/climate/...inia/richmond/
    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

  11. #11
    Join Date
    Nov 2004
    Location
    SW FL
    Posts
    6,238
    How MANY load calcs have you accumulated?

    U get 1 or 2 every month .. they are called Utility Bill $
    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

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