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  1. #1
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    Apr 2013
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    Heat pump for air conditioning

    guys - I have a non-efficient central AC system powering up my 2200sq feet home. 2 zones covering basement, 1st and 2nd floors. I've started research on a heat pump with the intention to keep the home AC on 24x7 during the summer months of June-Aug. I don't mind the initial investment which I understand could be $$ but wanted to ping this forum to see what my running power costs could be. I know a heat pump is very efficient but guess I'll still need an air handler/blower

    Can someone guide me on this - I live in a very high power cost city - NYC and it's about 42c/kWh here. Rough approximations would do for now and this home is a old 100 year old non-insulated home (indoor and outdoor stucco)

    Thx
    Last edited by beenthere; 07-08-2019 at 04:37 AM.

  2. #2
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    Apr 2013
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    Thread Starter
    I’m wondering if geothermal heat pumps installed vertically can be done in new york

  3. #3
    Join Date
    Aug 2002
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    Southold, NY
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    Quote Originally Posted by betterair View Post
    I’m wondering if geothermal heat pumps installed vertically can be done in new york
    Only if the building has a cooling tower!

  4. #4
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    Aug 2002
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    Quote Originally Posted by betterair View Post
    guys - I have a non-efficient central AC system powering up my 2200sq feet home. 2 zones covering basement, 1st and 2nd floors. I've started research on a heat pump with the intention to keep the home AC on 24x7 during the summer months of June-Aug. I don't mind the initial investment which I understand could be 20k but wanted to ping this forum to see what my running power costs could be. I know a heat pump is very efficient but guess I'll still need an air handler/blower

    Can someone guide me on this - I live in a very high power cost city - NYC and it's about 42c/kWh here. Rough approximations would do for now and this home is a old 100 year old non-insulated home (indoor and outdoor stucco)

    Thx
    How has the size been determined?

    Single unit serving multiple floors rarely work out as expected!

  5. #5
    Join Date
    Jun 2014
    Location
    Dover, DE
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    A heat pump isn’t a part you install, it’s a matched complete system.
    As for efficiency, it will only be as efficient as to how well it’s installed, and how well the building envelope is sealed.
    “I haven’t failed. I’ve just found 10,000 ways that won’t work.” - Thomas Edison

    “It’s not whether you get knocked down, it’s whether you get up.” - Vince Lombardi

    "In this house we obey the laws of thermodynamics" - Homer Simpson

    Local 486

  6. #6
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    Apr 2013
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    Thread Starter
    what's my best bet for a building that's not well sealed. Should I go for air source heat pumps instead and what manufacturers should I start with. I plan to call their dealers and get a local consultation

    thx

  7. #7
    Join Date
    Jun 2014
    Location
    Dover, DE
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    Hire the installer. Not the brand.
    The hands working on the equipment, means a lot more then brand name.
    Brand means almost nothing.
    “I haven’t failed. I’ve just found 10,000 ways that won’t work.” - Thomas Edison

    “It’s not whether you get knocked down, it’s whether you get up.” - Vince Lombardi

    "In this house we obey the laws of thermodynamics" - Homer Simpson

    Local 486

  8. Likes Vinnie_NJ liked this post
  9. #8
    Join Date
    Aug 2002
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    Southold, NY
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    Is there a cooling tower in the building?
    Are you allowed to tap into it?

  10. #9
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    Apr 2013
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    Thread Starter
    this is a 100 year old private house. Should I do a blower test to check the envelope's insulation?

  11. #10
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    Aug 2002
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    Southold, NY
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    A blower door test checks the homes leakage. Air changes per hour so you know where improvements can be made.

  12. #11
    Join Date
    Nov 2004
    Location
    SW FL
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    A LOT OF JUICE ... N E C E S S A R Y

    Quote Originally Posted by betterair View Post
    guys -

    I have a non-efficient central AC system powering up my 2200sq feet home.

    2 zones covering basement, 1st and 2nd floors.

    I've started research on a heat pump with the intention to
    keep the home AC on 24x7 during the summer months of June-Aug.

    I don't mind the initial investment which I understand could be $$ but wanted to ping this forum to see what my running power costs could be. I know a heat pump is very efficient but guess I'll still need an air handler/blower

    Can someone guide me on this -
    I live in a very high power cost city -
    NYC and it's about 42c/kWh here.

    Rough approximations would do for now and this home is a
    old 100 year old non-insulated home (indoor and outdoor stucco)

    Thx
    ___ THINK HARD..!...!!
    about building YOUR Own POWER PLANT.
    __________________________ ~70K dollars for maybe 20 KW SOLAR PV
    Attached Images Attached Images  
    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

  13. #12
    Join Date
    Nov 2004
    Location
    SW FL
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    HEAT LOSS might be in THE _BALL PARK of 64,000 BTU/HR at 15'F

    Your Heat Loss approximation from link
    ___ THANKS to GARY.

    ___ Attachment

    ___ www.loadcalc.net

    ___ ___ ___ LOAD CALC 2200 SQ FT BUILT 1918 2 STORY With Basement …
    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

  14. #13
    Join Date
    Apr 2013
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    Thread Starter
    wow that graph is super helpful. I didn't know my heating costs will go way up with high efficiency systems.

    My main goal with high efficiency was with my current system, it just doesn't feel comfortable - either too cold or too warm as it constantly cycles on and off. Any solutions to that?

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