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  1. Replies
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    997

    although carrire developed r410a, are other...

    although carrire developed r410a, are other manufartcues compariable with their r410a? which ones are?
    Thanks
  2. Replies
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    470

    Has anyone seen a difference on supply temp on...

    Has anyone seen a difference on supply temp on R410 vs r22 with heatpumps? Some R410a fans are claiming 120-125 degrees. Is this really possible.
  3. Thread: puron vs. r-22

    by help3
    Replies
    10
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    1,612

    With all things being equal, will puron give...

    With all things being equal, will puron give better heatpump performance over r-22? Is it worth the the extra money for a heatpump with puron?
  4. Thread: Rheem Heat Pump

    by help3
    Replies
    2
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    512

    Is a Rheem HP a good choice if the Trane xl14 and...

    Is a Rheem HP a good choice if the Trane xl14 and 16 are out of my price range?
    Also, does a Rheem have tev at both ends?
    If so, any thoughts of oversizing the unit by 1/2 ton.
    Thanks
  5. Replies
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    695

    Are they sold by the ton for different sizes or...

    Are they sold by the ton for different sizes or is it possible to get 3 and a half system ton system?
  6. Replies
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    695

    To respond to your second answer, if variable...

    To respond to your second answer, if variable speeds are used on cooling and heating, can you oversize the cooling if the speed in cooling is reduced?
  7. Replies
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    695

    Thanks for the response on the Goodman 14 seer...

    Thanks for the response on the Goodman 14 seer var speed question. I have three additional questions.

    Is it worth the money to get a two stage heatpump such as a trane XL16 compaired to oversizing...
  8. Replies
    38
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    3,772

    How does the Trane 16 work? Are both heating and...

    How does the Trane 16 work? Are both heating and cooling on a two stage system. What percent is the first stage?
    Thanks for the suggestions.
  9. Replies
    38
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    3,772

    I hope everyone is having a Merry Christmas. ...

    I hope everyone is having a Merry Christmas.


    I'm trying to find a good fit to slightly oversize the unit for heating reasons, but still remove the humitity for cooling. I will be oversized...
  10. Replies
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    793

    which one would be warmer if there was a 70...

    which one would be warmer if there was a 70 degree return temp on a 40 degree day?
  11. Replies
    6
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    793

    Will there be a difference in a Trane or Rheem...

    Will there be a difference in a Trane or Rheem heatpump supply temp if all other conditions are the same?
  12. Whats everyone opinion if a heatpump is to be...

    Whats everyone opinion if a heatpump is to be installed in Southern IL. 1525 sg ft walk out with conditioned basement.
    What are the advantages of a varible speed indoor fan 1 stage vs. a 2 stage...
  13. You might want to contact your electric company...

    You might want to contact your electric company and see if they offer a rebate for choosing to go with a heatpump over gas. Also, there may be a tax credit in some cases.
  14. Replies
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    711

    I'm learning as I go so please forgive any stupid...

    I'm learning as I go so please forgive any stupid questions.
    The Manual J 8th Edition gives the Runout cfm, Runout duct size and the number of Runouts for each room. Are these values considered...
  15. Replies
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    1,716

    I had a customer call about ac not keeping up. ...

    I had a customer call about ac not keeping up. This was a 1300 sq ft ranch with a basement. She had 6 inch flex to all rooms, including small bathroom and closet. The very small rooms were...
  16. Thread: return duct size

    by help3
    Replies
    70
    Views
    4,457

    What is the minimum return size (going into the...

    What is the minimum return size (going into the air handler)for a 2 ton central air unit? I think this unit may have a undersized return? Or to ask this question a different way, what is the...
  17. Replies
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    1,020

    Western Ky.

    Western Ky.
  18. Replies
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    1,020

    I have a customer who can not get below 78 on a...

    I have a customer who can not get below 78 on a 88 degree day. The customer was givin a copy of their Manual J. The company who installed their AC unit (new home-17 months) did not include some...
  19. Replies
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    2,748

    I don't have a book, I'm just a new home owner...

    I don't have a book, I'm just a new home owner who wants to find out why we are hot and cold. We got a Manual J and they have a u value of .55 for all windows. Most of them face south and west. ...
  20. Replies
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    2,748

    Hello, Can anyone tell me what the U value on a...

    Hello,
    Can anyone tell me what the U value on a new construction, double pane, working vinal frame window would be?

    Will the value change depending on which direction the window faces?

    What...
  21. Replies
    4
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    813

    About 50% of the north and south wall are...

    About 50% of the north and south wall are underground. They go from the corners of the long west wall above ground and finally go to 100% under ground on the corners of the east wall. The east wall...
  22. Replies
    4
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    813

    I checked the builder's Manual J and I'm...

    I checked the builder's Manual J and I'm concerned about it having no heat gain from the exposed basement walls. The wall is 53 ft, faces the west, is brick and has four windows and a french door. ...
  23. Replies
    6
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    796

    We can not get below 78 when its above 88 degrees...

    We can not get below 78 when its above 88 degrees outside. We can not get above 70 with heat pump and it gets worse as the temp drops.
  24. Replies
    6
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    796

    We can not get below 78 when its above 88 degrees...

    We can not get below 78 when its above 88 degrees outside. We can not get above 70 with heat pump and it gets worse as the temp drops.
  25. Replies
    6
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    796

    As mentioned earlier, we have a 1525 sq ft...

    As mentioned earlier, we have a 1525 sq ft walkout ranch with 1425 sq ft space in the walkout basement. They installed a 2.5 ton Heat Pump. Our builder showed us a Manual J with 23,250 required...
Results 1 to 25 of 38
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