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

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  1. Replies
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    Well that rules out my theory. I thought maybe...

    Well that rules out my theory. I thought maybe Herman got scared and pee'd himself in the duct :p
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    353

    Air flow restriction?

    If you were to slide your air handler filter (5" thick filter) out about half way and let go with the system on first stage heat (HP), and it sucks back into its slot, would you say that's a problem?...
  3. Replies
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    5,356

    No, it's the opposite. The system needs to...

    No, it's the opposite. The system needs to extract as much heat as possible from the coil. The strip is DOWN stream of the coil.
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    2,440

    A lovingly used 8320 :p

    A lovingly used 8320 :p
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    2,440

    Yeah, the IAQ is garbage. Rip it out, box it up,...

    Yeah, the IAQ is garbage. Rip it out, box it up, and send it to me. I'll dispose of it properly. :D
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    2,440

    Adaptive recovery works great for me.

    Adaptive recovery works great for me.
  7. Oh a ball buster, eh? I'm in good company :p ...

    Oh a ball buster, eh? I'm in good company :p

    So when a contractor says "yo dude, I calculated your heat loss at 17 MBTU", at what outside temperature should I expect to realize that amount of...
  8. I was given a heat loss number of about 17 MBTU. ...

    I was given a heat loss number of about 17 MBTU. I'm really really sure I'm not losing 17 MBTU when it's 65* outside...
  9. At what temperature is heat loss relevant?

    At what temperature is heat loss relevant?
  10. Replies
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    1,932

    False advertising? Tecman, that doesn't make...

    False advertising?

    Tecman, that doesn't make sense... Shouldn't the refrigerant come out of the compressor (and into the desup) at about 130* pretty much year-round?
  11. Replies
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    1,887

    Oh noes, not more of those :D Brand new, fired...

    Oh noes, not more of those :D

    Brand new, fired it up in May. I don't know what it used to cost just to heat the house, but last winter we had a couple $200 months total electric bill. My last...
  12. Replies
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    1,887

    My HP with electric backup cost me $4.60 to heat...

    My HP with electric backup cost me $4.60 to heat the house in September, and I'm under $10 for October so far. 1100 square foot house, 70*.

    If you're climate is mild, like hours, electric back up...
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    847

    I have a HoneyWell VisionPro and it almost...

    I have a HoneyWell VisionPro and it almost refuses to bring in the aux heat. I use a small set back at night, and it always fires up the HP a little early to try to have the temp at set point at the...
  14. Replies
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    1,887

    You mean besides the huge difference in heating...

    You mean besides the huge difference in heating cost? Heat pumps put a lot more heat per dollar into the home than either gas or electric.
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    705

    Stuff it! :p Lack of real estate is the reason...

    Stuff it! :p

    Lack of real estate is the reason I have an air source system. I didn't like the cost of the two vertical bore holes needed for my 2 tons.
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    705

    Hmm, with a 24000 BTU system (actually running at...

    Hmm, with a 24000 BTU system (actually running at a higher capacity since it's cold out) and a 9 KW heat strip, would it be reasonable to expect the heat strip and AC to cancel out to very close to...
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    705

    OK a little more background. One morning last...

    OK a little more background.

    One morning last week I got up and the stat was calling for heat ("Heat on"), the heat pump fan wasn't running, and the registers were blowing cold. I had no idea...
  18. The blower definitely runs slower on first stage...

    The blower definitely runs slower on first stage ;)
  19. Replies
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    705

    Learn me a little about defrost cycles

    If my heat pump goes into a defrost cycle when it's about 36* outside, and the stat panics and calls for aux heat, how long might the defrost cycle last? How would I know it's in defrost mode? How...
  20. So basically I'd have to replace the air...

    So basically I'd have to replace the air handler's control board with some apparently non-existent upgrade... Bummer.
  21. To install a thermostat... :confused:

    To install a thermostat... :confused:
  22. Modulate blower speed based on discharge air temp?

    2 stage heat pump with electric back up and variable speed air handler (see sig). It seems like it would make sense to set the AH blower speed based on a target discharge air temperature, rather...
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    Nope. Hopefully one of the pros here has access...

    Nope. Hopefully one of the pros here has access to it.
  24. Replies
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    I just open my panel and stick an amp clamp on...

    I just open my panel and stick an amp clamp on the heat pump feed. Then I bask in the tasty goodness of heating the whole house on 5 amps.

    :D
  25. Cost effective isn't the question, capacity is. ...

    Cost effective isn't the question, capacity is. The heat pump should be much more cost effective even at 0* out, but it will not deliver enough heat to maintain temperature. It took me awhile to...
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