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  1. Just a follow-up. I decided to not put anything...

    Just a follow-up. I decided to not put anything in front of the vent. Rather, I've altered my plan and will be putting small 2 wall-mounted cabinets ABOVE the vent. I'll probably leave my vaccuum...
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    OK, I get it. Now, with my Prestige stat set to...

    OK, I get it. Now, with my Prestige stat set to slow the blower for dehum, I believe the air handler slows the blower to 85% of full speed when indoor humidity gets to the dehum setpoint. So, if I...
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    Technical question about AC compressors

    There's a question about AC compressors that I've wondered about from time to time. Some VS air handlers are able to slow the blower on high humidity, if controlled by a capable thermostat like the...
  4. They're open. I think the louvers on the outside...

    They're open. I think the louvers on the outside and the angle of the photo makes them look closed. They probably could use some cleaning though.
  5. Anybody? I think the combustion air vent and...

    Anybody?

    I think the combustion air vent and it's size is covered in the building codes or maybe NFPA, but what would be required to keep it free of obstruction is less clear. Obviously you...
  6. Pictures. Each vent opening is 6" by 14".

    Pictures. Each vent opening is 6" by 14".
  7. Thanks, I'll consider that possibility too.

    Thanks, I'll consider that possibility too.
  8. Yes, I was thinking about that after I posted the...

    Yes, I was thinking about that after I posted the question. I'll post it later. I was also thinking, regardless whatever is in front of a vent like that, I suspect that the object needs to allow...
  9. Question about combustion air intake in garage.

    OK, I have a question about the air intake in my garage. I have a gas water heater and gas furnace on my garage, so there's a vent in the wall to bring in combustion air. I'm reorganizing the...
  10. Hmm, I was thinking it would be just the...

    Hmm, I was thinking it would be just the opposite. Most consumers would not have a clue of what the performance logs mean, assuming that the logs consist mostly of Delta-T measurements. I would...
  11. New Honeywell Redesigned Prestige IAQ vs VisionPRO 8000 w/RedLINK (with EIM)

    New Honeywell Redesigned Prestige IAQ vs VisionPRO 8000 w/RedLINK (with EIM).

    I'm looking at these two and wondering what the functional differences are. Despite the obvious difference of color...
  12. So, here I am two years later, with more...

    So, here I am two years later, with more information after a couple of heating and cooling seasons. The primary problem is that the back bedroom is sometimes colder than the rest of the house. When...
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    Well I had a UVC light running (under the A coil)...

    Well I had a UVC light running (under the A coil) most of the cooling season. This morning it was cold so I turned on the heat (heat pump) to see how it smelled. The first 5 minutes or so I could...
  14. Looking at dehu specs I see the old Honeywell...

    Looking at dehu specs I see the old Honeywell DH90 and Ultra-Aire 90H models mentioned here and there. It looks like these were R22, but other than going to R410A and some cosmetic upgrades, what is...
  15. So, I did a little experiment to confirm what...

    So, I did a little experiment to confirm what I've read about using continuous low speed fan. With the fan off for a few days, indoor RH was at 46% today when I turned the continuous fan back on. ...
  16. And it looks like the Aprilaire dehumidifiers are...

    And it looks like the Aprilaire dehumidifiers are energy hogs compared to the Honeywell and Ultra-Aires.
  17. Hmm, curious that Aprilaire didn't bother to put...

    Hmm, curious that Aprilaire didn't bother to put the fresh air port on theirs.
  18. So the ones with the fresh air port don't have...

    So the ones with the fresh air port don't have any sort of balancing damper built in, they just have the fresh air port for convenience?
  19. Thanks again for the insight. The Honeywells...

    Thanks again for the insight.

    The Honeywells are rebranded Ultra-Aire models, and it appears that the XT models are exclusive to Ultra-Aire, right?

    Edit: And what's the deal with the...
  20. Not sure what you are implying, but it seems like...

    Not sure what you are implying, but it seems like that would be sufficient unless infiltration and outdoor RH are high.
  21. So what are the technical differences between the...

    So what are the technical differences between the Ultra-Aire, Honeywell, and Aprilaire dehus that make some of them able to achieve a lower dew point, regardless of PPD capacity? I see that...
  22. Excellent info, teddy bear. Right now...

    Excellent info, teddy bear.

    Right now outdoor is at 85F 36% and indoor 76F 42%, and I have a steady fast drip of condensate so the AC is obviously removing considerable moisture, just not enough...
  23. Would it be safe to assume that a dehumidifier...

    Would it be safe to assume that a dehumidifier could produce condensate down to the lowest dew point as my AC can, or lower?
  24. I see, so the XT105H can do 4-5 lbs/hr at...

    I see, so the XT105H can do 4-5 lbs/hr at "normal" dew points, but 2-3 lbs/hr at low dew points. A smaller unit like the 70H might only do something like 3-4 lbs/hr at higher dew points and might...
  25. OK, I guess the next question is sizing. My HVAC...

    OK, I guess the next question is sizing. My HVAC guy is going to think I'm nuts when I say I want to put in a dehumidifier for this. I guess when I explain about the allergies/asthma he'll get it,...
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