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Type: Posts; User: help3

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  1. Replies
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    1,011

    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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    483

    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
    Views
    1,696

    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
    Views
    529

    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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    725

    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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    725

    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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    725

    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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    4,000

    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
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    4,000

    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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    821

    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
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    821

    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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    740

    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
    17
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    1,756

    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
    4,605

    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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    1,105

    Western Ky.

    Western Ky.
  18. Replies
    12
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    1,105

    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
    13
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    2,968

    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
    13
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    2,968

    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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    892

    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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    892

    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
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    896

    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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    896

    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
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    896

    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...
  26. Thread: Performance data

    by help3
    Replies
    7
    Views
    1,158

    I'm new to this HVAC stuff, what is a balance...

    I'm new to this HVAC stuff, what is a balance point?
    Do they size the unit to a outside tempature?
  27. Replies
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    1,393

    At 47 degrees my heat pump will produce only 75 %...

    At 47 degrees my heat pump will produce only 75 % of the required heat. This is B.S., should they have installed a larger unit? Also, the unit runs to long on AC and we can't get the temp below 78...
  28. Thread: Performance data

    by help3
    Replies
    7
    Views
    1,158

    I need 42,000 btu for heating, the specs on my...

    I need 42,000 btu for heating, the specs on my unit says is will produce 29,700 btu@47 degrees and 17,600 @17 degrees. Will I ever be able to reach 72 degrees without back up heat?
  29. Replies
    8
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    1,393

    What does 30,100 btu@47f mean on the Manual J?

    What does 30,100 btu@47f mean on the Manual J?
  30. Replies
    8
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    1,393

    Hello, We were given a copy of a Manual J from...

    Hello,
    We were given a copy of a Manual J from our builder. The numbers seem very low as far as equipment size. We have 1525 sq ft upstairs and 1425 in our walkout basement. They said we needed...
  31. Replies
    1
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    688

    Maybe a few pictures will help solve our problem....

    Maybe a few pictures will help solve our problem.
    How do I post the pictures?
  32. Thread: Manual J

    by help3
    Replies
    4
    Views
    883

    Both, its cold and limited air flow from...

    Both, its cold and limited air flow from registers. What is sensible and latent to the Manual J and how are they different?
  33. Thread: Manual J

    by help3
    Replies
    4
    Views
    883

    I had another company do a Manual J(the newest...

    I had another company do a Manual J(the newest version).
    I have a 2.5 ton HP. The Manual J was 45,000 heating and 40,000 cooling. This included 5,000 btu loss for heating in the ductwork and 2,500...
  34. Thread: duct size

    by help3
    Replies
    14
    Views
    2,918

    Yes

    Yes
  35. Thread: duct size

    by help3
    Replies
    14
    Views
    2,918

    Would it be wise to get a bid for new ductwork?

    Would it be wise to get a bid for new ductwork?
  36. Replies
    6
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    2,188

    2 1/2 ton heat pump, all runs 6 inch flex (12...

    2 1/2 ton heat pump, all runs 6 inch flex (12 total)and four returns.
  37. Replies
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    2,188

    How many btu's are lost in duct work?

    How many btu's are lost in duct work?
  38. Thread: duct size

    by help3
    Replies
    14
    Views
    2,918

    Hi, Is the duct work different between a 2 ton...

    Hi,
    Is the duct work different between a 2 ton and a 2 1/2 ton heatpump? If so, what would happen if you replaced a 2 ton heat pump with a 2 1/2 without replacing the duct?
Results 1 to 38 of 38
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