WHIA seems to be working like a champ. The vents in the master bedroom for example are pretty much shut all of the time, as is the basement. The main floor is now a fairly consistent temperature and is well within my 1.5 degrees goal. The second floor continues to be a problem. We have an 18 foot vaulted ceiling between the first and second floor that peaks in our office/loft. The office is hot, but I expect it to be. All of that heat from the first floor has to go somewhere and it might as well move on up (yes, just like george and weezy). The problem is that I can’t seem to get the upstairs bedrooms to cool. Those rooms are running full tilt, vents wide open and most of the HVAC air is being forced into there, but I’m still off by 3 degrees. Ceiling fans help the perception of the temperature out a lot, but I’m still trying to work this one out. I’m starting to think that I just may not have enough BTU capacity in those rooms. Not sure how to get around that, but will be a fun problem to figure out!
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May 26th, 2009 at 9:17 pm
Nice work! Didn’t you mention using airflow sensors at one point? Is that implemented? If so, what are you using for them?
May 27th, 2009 at 2:30 am
I did indeed. I’m trying to get my hands on this but haven’t scored one yet. My compromise in the meantime is to only allow 5 vents to be closed in the house at one time, but it seems somewhat unnecessary currently as it only wanted to shut off 4.