Wednesday, August 13

6 degrees of separation, part deux (see Thu Aug 07 post)

my house was built in 1962, but has been added onto twice. it's a pier-and-beam construction, and has 3 separate crawl spaces. yesterday, i learned that the additions probably happened in 1974 because of the date on the attic furnace. yes, next year my attic furnace turns 30 years old; it will be time for a party.

ever since the roofers were here (July), the central air conditioner (AC) on the north end of the house has been acting odd. during the daylight hours, i've been smelling something unusual, like burnt dust. well, since i'd like to keep my painters cool and fresh (!) i called the AC guy yesterday. told him it was no emergency, but when he had some time ... well, he came yesterday afternoon and quickly spotted something i'd never noticed: my furnace blower (also the AC blower) has both a front and rear access panel. i've known about the front one for years; i have to remove it to access the 16x20" filter, for cleaning about every other month.

well, he quickly figured out that the rear access panel wasn't snug .. about a 2" gap was there, allowing the hot (130F ?) attic air to enter the system, along with any dust, thus accounting for the smell. since it's been about 6 years since the AC was serviced, i asked him to check the refrigerant and, while the 2-ton system on the north end was fully charged, the 5-ton system on the south end needed some R-whatever, so a few pounds (?) were added.

today, he'll return to relocate the thermostat for the large AC unit; the temperature in my home can vary 4-6 degrees F(ahrenheit) from the thermostat to the end of the house, and i'm hoping that this can be cut to a 2-3 degree difference by moving it to an interior hallway. I will notice this more in the winter, when the temperature drops from 72F (at the thermostat) to 66F (master bathroom). 66F is a bit chilly for my taste. (summer variants go from 78 at the thermostat to 82, so it's not as bad).

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