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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...
  10. Replies
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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...
  11. Replies
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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...
  13. Replies
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    680

    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.
  15. Replies
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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...
  16. Replies
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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...
  17. Replies
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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...
  22. Replies
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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?
  23. Replies
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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.
  26. Yes. Does your thermostat have an outdoor...

    Yes. Does your thermostat have an outdoor temperature sensor?
  27. York also makes a 13 SEER side discharge unit...

    York also makes a 13 SEER side discharge unit that might be smaller than the Carrier unit.
  28. Have you considered the side discharge...

    Have you considered the side discharge Performance series unit?
  29. As long as the COP of your heat pump is greater...

    As long as the COP of your heat pump is greater than 1, it is beneficial to keep it running, with the heat strips coming on as needed to maintain temp in the house.
  30. Replies
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    Trane makes solid units. As far as the t-stat...

    Trane makes solid units. As far as the t-stat goes, I don't know any specific model numbers, but if you mention it to your installer, he should know. The Honeywell VisionPRO IAQ, already mentioned...
  31. Replies
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    Even if you only get a single stage condenser,...

    Even if you only get a single stage condenser, there is still a definite benefit to getting a variable speed blower. They use less energy than fixed speed units, and with the right kind of...
  32. Replies
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    If you can afford it, I would consider 2 stage...

    If you can afford it, I would consider 2 stage systems. In low stage, they will be able to run longer, which dehumidifies better and mixes the air throughout the house better.
  33. Replies
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    I believe that Emerson has a thermostat that they...

    I believe that Emerson has a thermostat that they advertise as being simple to operate and having big numbers.

    Found it:...
  34. Replies
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    If you decide to replace your system, remember...

    If you decide to replace your system, remember that the quality of the installation is far more important than the quality of the equipment you install. All of the major brands these days put out...
  35. Replies
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    First, you need to edit the prices out of your...

    First, you need to edit the prices out of your post. Pricing isn't allowed here.

    As far as your system goes, you should definitely replace the evap coil. No unit you can buy today will be a...
  36. How did he have the time to hammer the nails...

    How did he have the time to hammer the nails through the boards before the thief tried to get away?
  37. Replies
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    Also, could you please post some pictures of the...

    Also, could you please post some pictures of the furnace itself, and of the inside? I like seeing old HVAC equipment still in use.
  38. Replies
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    You would need to do a heat load calculation to...

    You would need to do a heat load calculation to determine what size furnace you would need. Because every house is different, sizing by square footage is a very easy way to get a furnace that is...
  39. Replies
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    The important thing to remember is that the...

    The important thing to remember is that the quality of the installation is FAR more important than the brand of equipment that is installed. Builder grade equipment, installed well, will make you...
  40. Replies
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    We need more information to be able to answer...

    We need more information to be able to answer your questions. Based off what you have said, all I can say is that Bryant equipment is identical to Carrier equipment on the inside, and that the...
  41. If the system is off, does the speed of the fan...

    If the system is off, does the speed of the fan change when you move it from Auto to On?
  42. Can you take a picture of your thermostat? Look...

    Can you take a picture of your thermostat? Look for a switch marked "Fan". It should have 2 positions, auto, and on. Try switching it to auto.

    Also, if you can get into the attic space where...
  43. Replies
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    Running the blower constantly might help.

    Running the blower constantly might help.
  44. Replies
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    Don't worry about voiding the warranty by having...

    Don't worry about voiding the warranty by having another contractor come look at it. The warranty is through the manufacturer of the equipment, not the installing contractor.
  45. Replies
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    Hang on. Why do you need 4 tons of cooling for...

    Hang on. Why do you need 4 tons of cooling for 1500 square feet? I have 4.5 tons for about 2700 square feet. If your house really does need 4 tons, I would focus on fixing that before buying a new...
  46. Can you post a picture of the plumbing attached...

    Can you post a picture of the plumbing attached to the water heater? From the picture that you posted, it appears that you may not have a T & P valve. Without this, your water heater could explode....
  47. Except for power vent models (which are NOT more...

    Except for power vent models (which are NOT more efficient than a natural draft model), I think just about every gas-fired water heater tank on the market today is standing pilot. Also, when the...
  48. Replies
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    Could you put the furnace in a closet?

    Could you put the furnace in a closet?
  49. Replies
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    I think that that unit is a Rheem.

    I think that that unit is a Rheem.
  50. Replies
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    Fixed the images.

    Fixed the images.
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