Updftae still hot and sticky
Ok, figuratively speaking I am no longer COOKING.Thanks, but still to warm and sticky.
So its 5:45 a.m. It stayed warm outside all night but the main floor temp did drop to meet the T stat setting of 73, after removing the filter and running at auto with ac on through the night. I would say the basement must be hovering around 60 or lower, but the top floor has stayed warmer than the main.
So to rewind, last year with the old Mid E furnace, on a hot day I could just run the furnace fan, a single speed and move enough air upstairs to cool things, most times with the AC off. Yesterday the stat was set for cool, fan in auto mode temp programmed to 73. Stat was reading inside temp at 78. I closed the 4 basement heat vents to force more air upstairs, no big changes.
This year the old AC is clearly working but the new Carrier 80000 BTU HE furnace doesn't seem to be pumping the air upstairs at nearly the same rate whether I set the fan for auto or high speed with the ac on.
So I think the ac unit is working fine but I'm wondering if the new dc motor can still move enough cold air upstairs or if my vents need improvement. I understand the principal of the new HE furnace with multi speeds and the new Carrier stat
Should I have to change any RA capacity to adjust for the dc motor. If anything we were more comfortable with the heat the last 4 months so air circulation seemed fine with the furnace on.
My returns are in wall at floor level, unobstructed. I have no returns in the basement. I have improved attic ventilation through added soffit vents and new roof with increased rooftop vents, so the attic should be less of a heat trap as well. Through the winter, I have taped and sealed the ducting on several runs going to the top floor and have not messed with any dampers. I also sealed my rim joist. No other modifications.
I have a total of 5, 8x16" RA grilles at baseboard level , 2 upstairs in 650 feet 3 on the main in 1000 feet and none in the basement. Do I need to enlarge these grilles or move them to ceiling level to move more air with the new DC furnace motor ?I know moving them up the wall to ceiling level would help but how much should it change. If the furnace keeps the house more comfortable in winter shouldn't the blower improve the ac function in the summer as well?