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  1. Replies
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    Thanks a bunch!

    Thanks a bunch!
  2. Replies
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    591

    Wow, I did not know that the HPSF took into...

    Wow, I did not know that the HPSF took into account humidity. I am impressed.
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    591

    Heat pumps and efficient wrt humidity

    I was thinking about my heat pumps today and the outdoor humidity. I live on the Gulf of Mexico coast and it is humid, very humid. If I want to determine if heating will be more efficient with a...
  4. My answer stands. There is no way to magically...

    My answer stands. There is no way to magically split the heating system in two and connect it to two gas meters.

    If you decide to go ahead with this, you should consider re-doing the hot water...
  5. It is not going to be inexpensive. You need a...

    It is not going to be inexpensive. You need a second boiler. It might also mean that the existing boiler will be oversized when you separate it from part of its load.

    How do you make hot water...
  6. For small shops, it might be difficult to keep...

    For small shops, it might be difficult to keep well-trained and experienced techs on the payroll. IIRC, typically everyone is making deliveries in the winter and routine service in the summer. Do...
  7. From a rural NY customer point of view, the techs...

    From a rural NY customer point of view, the techs I have dealt with were excellent.
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    Thanks, that clears a things up a lot.

    Thanks, that clears a things up a lot.
  9. Replies
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    That is part of the problem. If there were no...

    That is part of the problem. If there were no solar heat for the pool, a heat pump coupled to the HVAC system would be more cost-effective. Stacking the systems makes for lower financial gain for...
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    Let me make sure I have this right. Now your...

    Let me make sure I have this right. Now your AHUs are outside the envelope of the house. After the changes, that space will be more tightly coupled to the inside than the outside. This is in the...
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    Keep in mind that the OP can use his solar...

    Keep in mind that the OP can use his solar heating system to dump excess heat from the pool water. He can only do that, however, at night.
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    TB is right, and your fear is justified. A very...

    TB is right, and your fear is justified. A very well-designed air conditioning system will reduce the need for dehumidification substantially. When it is too humid and you are cool or at the right...
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    Minisplit placement

    The wife says over and over, "I hate the air blowing on me". I gotta get the wall unit placement right in the bedrooms. First thought is that it seems like the wall right over the heads of the beds...
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    How does one "keep the coils dry"? They reside...

    How does one "keep the coils dry"? They reside in a dark box with minimal air flow after the AC cycles. That is why I found it desirable to build an after-blow system for my car's system. It...
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    The killing you refer to is the most common form...

    The killing you refer to is the most common form of sterilization. That would be in an autoclave with steam. In order to reach temperatures higher than boiling, pressure is needed. The 121 C that...
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    They probably didn't have ducted supply and...

    They probably didn't have ducted supply and return registers or radiators either. Where do you draw the line?
  17. Replies
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    Hey, there is nothing old-fashioned about...

    Hey, there is nothing old-fashioned about hydronic, per se. There are new ways of implementing hydronic systems, but they are still being installed today. There are still radiators. You see a lot...
  18. A universal "button it up" solution for all days...

    A universal "button it up" solution for all days on all AC systems is simply not possible. In a humid region that is probably true. In dry areas the temps drop more at night and they are, well,...
  19. I don't think an answer is possible with current...

    I don't think an answer is possible with current information. There is not a typical Northeast climate. The costal plain is humid, but as you move inland, it gets less so. If you live on Long...
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    I can't argue with that.

    I can't argue with that.
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    " I live in a humid environment and make-up air...

    " I live in a humid environment and make-up air near the range would cut AC costs significantly."

    "Would" is the key word. I don't have this yet. We bought the house in November and it needs a...
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    The make-up air should be very close to the...

    The make-up air should be very close to the cooking appliance, range, cook-top or oven. That will cause heating and increased humidity locally, but avoid pulling in outside air from leaks all over...
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    Please, don't over-generalize. I know that most...

    Please, don't over-generalize. I know that most people only use the kitchen to open the pizza box. Others and I run range hoods for hours sometimes. Especially with gas cooking appliances, it cuts...
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    I have never liked the upright cast iron that...

    I have never liked the upright cast iron that much. My grandparents’ house had nice cast-iron baseboard.
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    What is a "state hvac department"? Open crawl...

    What is a "state hvac department"?

    Open crawl spaces in raised homes made some sense before air conditioning. Construction techniques are still catching up to air conditioning. In a humid...
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