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  1. A small update. I found a couple guys to come...

    A small update.

    I found a couple guys to come out that are from out of that small town.

    One was a bit clueless.

    The second guy however said the condenser pressure was too high, due to the...
  2. Guys, thanks So, you've moved the help forums to...

    Guys, thanks
    So, you've moved the help forums to here, great. But whats this about not being allowed to post here unless you have an *? Or, you can post but you can't give advice?

    The state does...
  3. fridge, I thought I was under the regular...

    fridge, I thought I was under the regular residential hvac forum.

    Does that not exist anymore or did I post in the wrong place?

    Thanks
  4. Thanks Mike. I called a few more locals to ask...

    Thanks Mike.

    I called a few more locals to ask about rebates, offers, etc. Pretty much confirmed none running currently.

    Most say they come in the fall time frame, (sept-ish) but would likely...
  5. I'd appreciate any helpful ideas or suggestions...

    I'd appreciate any helpful ideas or suggestions from any of you knowledgeable guys here.

    Thanks
  6. Oh, and I called and spoke w the guy myself this...

    Oh, and I called and spoke w the guy myself this evening because I wanted to ask what equipment hed suggested installing.
    (Dad has a nat gas furnace he doesnt wanna change out)

    The guys looking...
  7. Any suggestion on what/who has rebates running right now?

    Hi guys, I've been around here a while as an hvac engineer. I'm trying to help my dad (70) with choosing a new unit. Its VERY VERY difficult to explain the engineering and quality differences to...
  8. Ok Sir, with if you're introducing a second...

    Ok Sir, with if you're introducing a second variable, (colder chilled water temp) then I fully agree with you.

    However, I meant with all variables held constant, lowering airflow should decreae...
  9. medic, to lower RH you'd want to slow down the...

    medic, to lower RH you'd want to slow down the fan in order to increase the time the air is in contact with the cooling coil and therefore remove more moisture.
  10. Well, yes and no. Hes prob gonna get a good...

    Well, yes and no. Hes prob gonna get a good price, but were not just gonna accept a ridiculous number either. We can negotiate.
  11. Guys, this is a several million dollar project...

    Guys, this is a several million dollar project thats already breen bid and is under construction. You can't change contractors at this point because of this duct issue.
    Literally, part of the...
  12. Zonko, the contractor has said that his price to...

    Zonko, the contractor has said that his price to remove duct insulation, seal all ductwork, and reinsulate the ductwork would be basically the same price as to remove all the ductwork and install new...
  13. Yea, I like Ga techs idea. Ask them what value...

    Yea, I like Ga techs idea.

    Ask them what value they will spend to replace the unit. That should be the same as the cash out value. You can say, no, I'd rather get a better higher SEER unit, I'll...
  14. I stand corrected about the flame spread and...

    I stand corrected about the flame spread and such. I wasn't thinking right yesterday. I've gotta look into this Aeroseal product. Hopefully they are meeting these requirements.

    After the posted...
  15. Kevin, anyone ever tell you you look like Michael...

    Kevin, anyone ever tell you you look like Michael Keaton from family Ties? haha

    Also, when you say a Carrier lasts 3 to 5 years longer, is that with any type of coil coating for coastal or just a...
  16. Air, I would have thought you were a Ttrane guy...

    Air, I would have thought you were a Ttrane guy since I often see you mentioning their 20i two stage unit.

    I really would like to see your ranking of the pecking order of equipment.

    i"m sorry i...
  17. Like I said, I AM the expert. Jeez, its what...

    Like I said, I AM the expert. Jeez, its what we're paid to do every day.
  18. Air, How about you rank them by your knowledge of...

    Air, How about you rank them by your knowledge of them. I always like to learn.

    A consulting engineer designs all all commercial systems before a contractor bids and installs those systems.
    ...
  19. ....and to your point, flame spread is not an...

    ....and to your point, flame spread is not an issue inside the metal ductwork.
    Flame spread applies when you're dealing with other things in a ceiling plenum space.
  20. Air, buddy, I know we've had some of these...

    Air, buddy, I know we've had some of these conversations when we spent months with that guy in Cali who got the oversized 5 ton 2 speed.

    I'm an HVAC consulting engineer. I've been in this field...
  21. I don't know about the Rheem having or not having...

    I don't know about the Rheem having or not having a matching heatpump. However, its irrelavent.

    If you had a heatpump in your house, and its under a warranty, then they have to get a heatpump of...
  22. The engineer says ....HI!!! Rhizzlebop= the...

    The engineer says ....HI!!!

    Rhizzlebop= the engineer
  23. Size wise, most of these little air handlers for...

    Size wise, most of these little air handlers for residential units are basically the same size. Sounds like a bunch of crap when they installed the AC unit.

    I'd say, their reason was that the...
  24. I put Trane Carrier and Lennox on an equal field...

    I put Trane Carrier and Lennox on an equal field at the top. Every brand has minor issues once in a while.
    Below there I'd put most any of the other ICP products such as Bryant, or Tempstar.
    I...
  25. I'd prefer you had a Rheem as well. What I...

    I'd prefer you had a Rheem as well.

    What I REALLY suggest is for you to ask them for the heatpump, AND if you can pay additional for it to NOT be a goodman. Some here would disagree with me on...
  26. All of this ductwork is in an existing school,...

    All of this ductwork is in an existing school, above existing ceilings that were not planned to be all torn out and its all wrapped in insulation and leaks BAD.

    They couldn't even get an inch on...
  27. You sir have a problem on your hands. Those...

    You sir have a problem on your hands.

    Those strips in Tampa will end up costing you an average of about 3.5 times the cost per btu of heat as a heatpump would.

    If you figure just 3 months of a...
  28. Looking for old duct sealing spray system for renovation job.

    We are doing a project renovating a school building thats about 80,000 sqft. Tons of 30 yr old ductwork in the building that we want to reuse.

    Once Demo took place, the contractors have tried...
  29. Air, after as much time as you and I have spent...

    Air, after as much time as you and I have spent on some of these threads, you should know better than to accuse me of being some kind of groupie.

    I don't know what a 20i is other than a 2...
  30. Air, I am familiar with the Infinity zoning...

    Air, I am familiar with the Infinity zoning system but not the zoning system by Trane. I thought the 20i is actually just a two compressor unit. No zoning at all. We've never specified a 20i unit...
  31. As for the Trane or Carrier infinity, I've heard...

    As for the Trane or Carrier infinity, I've heard good things about the infinity. We just spec'd it on two fire stations we did so we'll see how well they perform. These are zoned since its...
  32. Sir, I don't recommend you consider electric...

    Sir, I don't recommend you consider electric tankless.
    We only use tankless electric in our designs when its a very small single lavatory sink far away from a hotwater source. We then just specify...
  33. OP, I think dual fuel is a waste down there. ...

    OP, I think dual fuel is a waste down there.

    If you want to maximize winter comfort then install a humidifier in your system.

    During the winter, at 70F inside, I bet your indoor humidity runs...
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    Well, congratulations Kelly on your new FREE HVAC...

    Well, congratulations Kelly on your new FREE HVAC system, because I KNOW you didn't pay them before they finished now did you????

    You need to hire a new contractor. This is over your head.
  35. Oh yea, we know. Its a bunch. Those were the...

    Oh yea, we know. Its a bunch. Those were the temp criteria we were given.
  36. No woories Kid82. We realize how much water...

    No woories Kid82. We realize how much water evaporates from a pool. I've never had an issue before. The last pool we did was a 40 ton Aaon unit. They are thrilled with the results.
  37. I'm a consulting engineer. With the assistance...

    I'm a consulting engineer. With the assistance of the poolpak rep, yes I sized it.

    I spoke with the factory today and expressed my concerns. I also reviewed the glass area and shade structures...
  38. I don't know what a negative pressure space is. ...

    I don't know what a negative pressure space is.

    As for the temps, the school gave us the parameters of 85 degree air and 90 degree water. The pool unit rep sized it based on those parameters. ...
  39. I can't just change manufacturers at this phaase....

    I can't just change manufacturers at this phaase. Its already been designed, sealed, stamped, permitted, approved, bid, and now submitted. The last step is for the contractor to buy and install...
  40. In this case, I have selected a unit from...

    In this case, I have selected a unit from PoolPak. It is for pool rooms like this.

    It was selected based on air and water temps and pool surface area. These usually drive the unit size.

    When...
  41. In a pool situation....does latent evaporation absorb sensible?

    I posted about this over in the commercial thread and noone seems to be seeing it. Or maybe my post is too long to read and follow.

    My mail question is this.

    When you have an indoor therapy...
  42. Noone?

    Noone?
  43. Dang man, I thought I was gonna come see some...

    Dang man, I thought I was gonna come see some help here!! I got excited when that email notice came through.

    I've been in touch with the rep for a week so far. His selection program wont let him...
  44. Sizing pool unit......engineering perspective...need help!

    I am sizing a pool unit for a therapy room we are doing on a disability school.
    We are using a PoolPak unit for the job.

    My issue is that the pool unit doesn't indicate it can handle the sensible...
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    crayx4, the thicker the filter is, then the more...

    crayx4, the thicker the filter is, then the more material is in it. It allows the filter design to slow the particles down over a longer distance until they fall out of the airstream. This means...
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    OP, you need to look at the pressure drop at a...

    OP, you need to look at the pressure drop at a clean state and a dirty state.

    I do not believe you're gonna be able to use a 1" MERV 11 in a residential cass unit.

    The static drop will be quite...
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    Airtight, read my explaination below.

    Airtight, read my explaination below.
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    Child, the VRFs I've looked at still only have...

    Child, the VRFs I've looked at still only have refrigerant lines going from the condenser to the air handlers. We've done ceiling cassetts and wall units. Those still have no ductwork to put a...
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    Air, thats a good question. In the Southeast,...

    Air, thats a good question. In the Southeast, our winters are so short, and even then we have speradic days where we'll need cooling in December sometimes that I bet our traps never dry out.

    Up...
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    Guys, don't direct this man down the wrong path. ...

    Guys, don't direct this man down the wrong path. Not saying you are, but be very careful.

    My daiken does about te best at low temp for heat that I know of. I think it gives 75% capacity at 4F.
    ...
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