Search Results - HVAC-Talk: Heating, Air & Refrigeration Discussion

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  1. Currently, we keep the house at 80 during the...

    Currently, we keep the house at 80 during the summer, and combined with our ceiling fans, it's generally pretty comfortable. The furnaces have no trouble keeping the house 68-70 during the winter,...
  2. The house is split pretty evenly, the downstairs...

    The house is split pretty evenly, the downstairs is probably about 1200 square feet, and the upstairs is probably about 1500. The furnaces live in small closets on the floor they serve. The house...
  3. I take it that the XL80 can't do dehumidify on...

    I take it that the XL80 can't do dehumidify on demand, then? My concern about the 16i is that I have read here that it doesn't have the best latent heat numbers, and is wired in a weird way that...
  4. Yes, actually. I have a beagle.

    Yes, actually. I have a beagle.
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    That's a big coil.

    That's a big coil.
  6. Planning for eventual equipment replacement

    We plan to replace the HVAC systems in our house within the next year or two, and so I'm trying to figure out what the best way to go is. I've hung around here long enough to know the importance of...
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    I think the main engineering reason why cars have...

    I think the main engineering reason why cars have cabin air filters is to protect the heater core and evaporator from plugging with dust, and not for air quality, despite what the marketing...
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    Are you having a load calculation done? 5 tons...

    Are you having a load calculation done? 5 tons seems a bit big for 2000 square feet.
  9. If you have a heat pump, an 8 degree setback is a...

    If you have a heat pump, an 8 degree setback is a bit excessive. On colder days, the system will have to use the aux heat to recover, which will eliminate any savings you would have gotten from the...
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    What they are doing is a good idea. Making...

    What they are doing is a good idea. Making improvements to the building envelope before you replace the equipment, so that the equipment is properly sized to the improved building, is the way to do...
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    He is in Canada. I don't think that he will need...

    He is in Canada. I don't think that he will need to step up a size because his cooling load would require a larger blower. However, by oversizing he will get short cycling, less even temperatures,...
  12. THIS! Check your return system for...

    THIS!

    Check your return system for restriction. Since you had good flow with the blower compartment door off, the supply side of things is probably fine. Could anything have gotten sucked into a...
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    Look at it this way: The unit your contractor...

    Look at it this way: The unit your contractor recommends would be about 2k BTU/hr short on a design day, and a 1500W space heater puts out about 5100 BTU/hr. Combine that with the fact that the...
  14. It is a brand of air cleaner that uses the thick...

    It is a brand of air cleaner that uses the thick (4 inch, IIRC) pleated air filters.
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    Almost, if not all, air handlers and furnaces...

    Almost, if not all, air handlers and furnaces have more than one blower speed. Your air handler may be set to move less air than its maximum. However, if it is set to move 600 CFM per ton, that...
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    It is my understanding that home warranty...

    It is my understanding that home warranty companies will either replace the equipment if necessarily, or you can take a lump sum. It is always better to take the lump sum and find your own...
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    Are there any controls between the thermostat and...

    Are there any controls between the thermostat and the condenser, like one of those boxed that you can have the electric company put on your unit to turn it off during periods of peak load? (Not that...
  18. We generally keep our house at 80 during the...

    We generally keep our house at 80 during the summer. If that's what makes you happy, do it. No sense in spending extra money to keep your house too cold, is there? :)
  19. Hmm. Rheem/Ruud make some pretty short units.

    Hmm. Rheem/Ruud make some pretty short units.
  20. That is some very nice equipment, and it sounds...

    That is some very nice equipment, and it sounds like it was sized well. If I were you, I would be very happy.

    Also, since the XL20i has a lower low stage (50% of full capacity instead of 60-70%)...
  21. I think Mexico uses a system similar to the...

    I think Mexico uses a system similar to the United States for their electricity. As for sizing your mini splits, a Manual J would be the way to do that. There should be a link somewhere on this...
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    What are you using to measure the indoor humidity...

    What are you using to measure the indoor humidity that is conflicting with the tstat?
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    Also, if there is a high latent heat load (lots...

    Also, if there is a high latent heat load (lots of humidity), that will reduce your temp differential.
  24. Just curious, but what equipment did you have...

    Just curious, but what equipment did you have installed?
  25. Possibly. The installation manual can tell you...

    Possibly. The installation manual can tell you more than I can. If the stat can use an outdoor temp sensor, then it might have a setting to lock out the heat strips above a certain temperature.
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