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  1. Replies
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    Bath Exhaust - metal or PVC?

    Name says it all. Anyone have prefences on which way to pipe the bath exhaust? Sidewall discharge (no access to attic or soffitting from bath).
  2. Replies
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    14,359

    Separate the fan speed selections for heating and...

    Separate the fan speed selections for heating and cooling. The MBE blower gives you the choice of 4 speeds for each, but then the +10%/-15% adjustments apply to both. It would be nice to apply the...
  3. Replies
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    11,654

    By the way, in my earlier post, I meant the bulb...

    By the way, in my earlier post, I meant the bulb position, not the valve. Figured y'all would know what I meant, but wanted to be clear...
  4. I would think that you could set up your...

    I would think that you could set up your thermostat to do two stages of aux heat - with the compressor running on both.

    However, I'm not sure that you can stage the 4 elements in the way it was...
  5. Replies
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    11,654

    I assume we're talking about the TXV in the...

    I assume we're talking about the TXV in the outdoor unit? It is installed certainly north of 10 - probably around 11. I'll have to have the installer look at that - they're gonna come back in the...
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    11,654

    Here's the tech specs:...

    Here's the tech specs:
    http://securenet.goodmanmfg.com/pdf/infoPdf/Lit/RT6214003R4.PDF
    See pages 24-25. That has the pressure readings by outdoor temperature.
  7. Replies
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    11,654

    Can't wait until summer. I can stick my head...

    Can't wait until summer. I can stick my head between my new 4-ton Amana and my 5yo 1.5 ton Comfortmaker.

    I'm betting the Comfortmaker is louder...

    And I'm guessing that my neighbor's unit will...
  8. Replies
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    11,654

    Anything on ASZ16048, MBE2000, CAPF048060, TXV?

    Anything on ASZ16048, MBE2000, CAPF048060, TXV?
  9. Replies
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    11,654

    I had a similar issue with vibrating linesets. ...

    I had a similar issue with vibrating linesets. It SEEMS to be better once the refrigerant charge was reduced (it was well over the spec based on outdoor temp). Never had the muffler installed.
    ...
  10. Replies
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    1,167

    First of all, your basement doesn't add much (if...

    First of all, your basement doesn't add much (if any) to your cooling requirements. You'll need some airflow down there just to keep it from getting musty. Heating is a different story.

    I live...
  11. Replies
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    In the winter, I have it pulling the air up. ...

    In the winter, I have it pulling the air up. This is to keep the slight breeze away from my skin - otherwise, it could be felt as a draft, and be tempted to raise the setpoint. With it pulling the...
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    In my house, the entryway and living room are...

    In my house, the entryway and living room are both double-height (19-20' or so). Probably around 500 sqft.

    In the middle of the living room is a ceiling fan. It stays on all the time (on low). ...
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    Quiet?

    The last thing I want in my bathroom is the ultra-quiet fan.

    The fan can do a pretty good job of masking the sounds of my toileting.

    Or if you and the wifey are in the shower...

    "Middle of...
  14. Replies
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    2,386

    Manual J is a load calculation to determine the...

    Manual J is a load calculation to determine the size of your units.

    Manual D is a duct sizing calculation. Critical if you want to have a quiet system.
  15. Replies
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    Aw heck, I'm in the mood to post today. When I...

    Aw heck, I'm in the mood to post today.

    When I got my contract for my heat pump last year, it specified 10% deposit upon signing. The shop is an "owner + 3", so small but not a one-man show.
    ...
  16. Replies
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    2,386

    Make them run a Manual D for the ductwork. ACCA...

    Make them run a Manual D for the ductwork. ACCA guidelines for supply trunks is 700-900 fpm velocity. For 1600 CFM (4 tons), you should be between 12x24 and 12x30. Now, if they want to run round...
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    The indoor units are the same. The outdoor...

    The indoor units are the same.

    The outdoor units are different. The Goodman units are GSZ. Slightly different specs.

    Both are Copelands. In fact, if you read thru here, almost all of the...
  18. Replies
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    If you're talking heat only - the amount of air...

    If you're talking heat only - the amount of air required for a furnace is smaller because the temperature differential is higher. A heat pump will give you a 20-30 degree rise in output air temp. A...
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    Who did you pay off for that? Seems any board I...

    Who did you pay off for that? Seems any board I get from HD or Lowes is for building round houses with curved walls.
  20. I'll toss my 2 cents in also. 4 stages of heat...

    I'll toss my 2 cents in also.

    4 stages of heat might be nice, but it is probably overkill. A lot of times, two stage furnaces are used to "even out" the heating cycle. By using a lower fire rate...
  21. I'm convinced the IAQ doesn't show the actual...

    I'm convinced the IAQ doesn't show the actual indoor temp, but rather will show the setpoint temp if it is "somewhat close".

    In other words, during my recovery from 68 to 71, I'll see the temp...
  22. Replies
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    Gary - I think you misread what he said. It was...

    Gary - I think you misread what he said. It was per kilowatt hour.
  23. Replies
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    Did a google on the thermostat you mentioned. At...

    Did a google on the thermostat you mentioned. At ProThermostats.com, the price difference between the IAQ and the Climatouch you reference is less than $10. And the IAQ is the lower priced one.......
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    Bama - There are very few combined...

    Bama -

    There are very few combined thermostats/humidistats. The VP IAQ is one of them (maybe the only one outside of Infinity?). It can control both the winter humidification and summer...
  25. Replies
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    I just got rid of my electric furnace and...

    I just got rid of my electric furnace and replaced it with a heat pump because my winter bills were just too high.

    November thru January, I've saved over $400 based on electric usage per heating...
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    I glanced thru the two versions of the HP specs...

    I glanced thru the two versions of the HP specs that I have. The numbers provided in the document did not change when they spec'd the larger size lines.

    I would therefore conclude that the specs...
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    OFF. When in doubt, look at the manual. Go...

    OFF.

    When in doubt, look at the manual. Go back to my earlier post with the links. Go to the third document. Page 50 starts the ASZ info. It says how to set it.
  28. Replies
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    6,640

    Up until recently, Goodman wanted 7/8". For...

    Up until recently, Goodman wanted 7/8". For example, in September, the ASZ heat pump I have was spec'd at 7/8". In October, they updated the specs to 1 1/8". I'm not sure why they moved up (Robo...
  29. Replies
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    2,074

    Dip switches: #1/2: heat CFM. For 1200 CFM,...

    Dip switches:
    #1/2: heat CFM. For 1200 CFM, #1=OFF, #2=ON.
    #3: Not used
    #4: OFF for a two-stage HP
    #5/6: cool CFM. Again, for 1200 CFM, #5=OFF, #6=ON
    #7/8: CFM Trim adjustment. If 7=ON...
  30. Replies
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    Ahhh... I just realized what switch #4 does. ...

    Ahhh... I just realized what switch #4 does. Thanks.

    As for speeds vs stages - these are probably used interchangeably too much. You are correct, there's only one "speed" of the compressor that...
  31. Replies
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    Depending on your dip switch settings, you should...

    Depending on your dip switch settings, you should notice 4 speeds during the heating cycle.

    First Stage Heat = 60% or 70% of selected speed. I'm not sure which it is, as the two documents I look...
  32. Replies
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    2,272

    What model do you have? I have had similar...

    What model do you have?

    I have had similar issues with my new Amana ASZ16. Installed in October, and didn't hear any noise in cooling mode. A few weeks later, switched it over to heat mode and...
  33. Replies
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    1,361

    You installed the thermostat yourself? If so,...

    You installed the thermostat yourself? If so, double-check your wiring.

    I had an electric-only furnace last year. If I had 835 Heating Degree Days (like you had in December), I would have gotten...
  34. Replies
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    15,817

    Got some family history with Comfortmaker. My...

    Got some family history with Comfortmaker.

    My father-in-law used to make them, back when they were made in Illinois (and before it was owned by ICP). Moved with ICP to Tennessee, and kept making...
  35. Replies
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    1,380

    701 btu latent heat gain? Seems low. Hopefully...

    701 btu latent heat gain? Seems low. Hopefully a pro will hop in on that. BUT - if the latent heat gain is that low, then you don't have to worry about humidity in the summer.

    On the surface,...
  36. Replies
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    Call your contractor back out. They've installed...

    Call your contractor back out. They've installed it with at least one problem. The wiring should be fixed to allow the heat pump to operate in HEAT mode during a call for heat.

    Second, make sure...
  37. Replies
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    I recently had a similar system installed. I...

    I recently had a similar system installed. I went with the ASZ16 (2 stage).

    My contractor installed the Lennox HC16 - it's a MERV 16 media filter (4-5" thick). The particule capture rate is very...
  38. Replies
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    I got the Amana ASZ16 model (2 stage HP)...

    I got the Amana ASZ16 model (2 stage HP) installed a few months ago. It's quieter than the 5 year old Comfortmaker 10 SEER A/C unit it replaced, and quieter than the 1.5 ton Comfortmaker that...
  39. Replies
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    It was 7pm, and the indoor temp was 68 or 69, and...

    It was 7pm, and the indoor temp was 68 or 69, and the set point was 71. The program is set to start at 5pm, so recovery would have been between 3PMish and 5PM.

    I would have expected the recovery...
  40. Replies
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    576

    I requested the IAQ. They were leery about using...

    I requested the IAQ. They were leery about using programmable stats with HPs because too many customers didn't understand the setback limitations of a heat pump.

    At this point, I'm confident that...
  41. Replies
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    576

    I've avoided calling them so far because this was...

    I've avoided calling them so far because this was their first IAQ install. The good people here have much more experience!

    The stat does call aux heat. It just doesn't if the current heat cycle...
  42. Replies
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    576

    The outdoor sensor is wired into the equipment...

    The outdoor sensor is wired into the equipment module.

    All OAT numbers were based on the reading on the thermostat. One sensor only. (Sean Connery just popped in my mind). No other indoor...
  43. Replies
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    576

    VP IAQ not going into Aux Heat

    Last week it was finally cold enough for the IAQ to start requesting aux heat. It is configured for a 20* OAT aux heat cutoff.

    Daytime set to 67*. At 5pm, it is set for 71*, with adaptive...
  44. Replies
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    1,994

    Here's my understanding - it depends on your...

    Here's my understanding - it depends on your backup heat mode. If your backup heat is gas, then the coil can go anywhere - either the furnace is running, or the heat pump is running. Not both.
    ...
  45. Replies
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    Sorry for the delay. My 'stat does not show...

    Sorry for the delay.

    My 'stat does not show when it is in defrost. I looked a bit, and I don't see an obvious way to make it show.

    As for enabling aux heat on defrost even if the stat is...
  46. Replies
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    For my system, the outdoor unit forces the aux...

    For my system, the outdoor unit forces the aux heat on when it starts a defrost cycle. I believe it also only brings on the first stage of aux heat. I haven't tried looking at my IAQ during a...
  47. Replies
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    The point at which aux heat is needed will vary...

    The point at which aux heat is needed will vary based on your house and the equipment. We've got down to mid 20s at night so far. Aux heat hasn't come on yet (I've got it at 15*).

    We leave ours...
  48. Replies
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    It depends on your air handler. Most variable...

    It depends on your air handler. Most variable speed blowers would have a humidistat input which would lower the blower speed to 85% - increasing the amount of moisture removed from the air. I don't...
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    Ummmm - you shouldn't have water staying in your...

    Ummmm - you shouldn't have water staying in your drain line. There should be an air gap or something to allow the water to freely flow out of the drain tube and into the pump.
  50. Thread: Help!!!!

    by Waterloo
    Replies
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    1,428

    Do you have this set to "Auto" for Heat vs Cool? ...

    Do you have this set to "Auto" for Heat vs Cool? If so, it might be possible that the thermostat is heating it to 74 degrees, slightly overshoots, causing the a/c to come on to bring it back down,...
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