OK - Some background. Bought my 2400 sq ft home in Feb, 2004. So,
this is my first summer. In addition, it is my first home, so newbie
alert on all sides.
The home has 4 stories. A garage/basement, where the A/C, heater,
water heater etc are located. First floor is kitchen, D/R, L/R, etc.
Second floor is 2 full baths and 2 bedrooms and Third floor is a
Vents are closed in the basement, the majority (not all) of the first
floor and one of the two bedrooms on the second floor and all
bathrooms. Vents are open in one bedroom and the loft.
When I turn the A/C on and the outside temp is lets say 85 degrees or
higher, the A/C struggles to keep the home below 75 degrees. During
the day, I have the thermostat set to 79 degrees and it easily holds
at this temp. But, when I return home, it is set to bring the home to
75 degrees and the A/C runs all evening until I go to sleep, where the
temp is again brough to 79 degrees.
Now, my questions:
1. When temp should the air be at the vents during A/C operation?
How should I test this?
2. This is a fairly new home (less then 3 years old) so I assume the
A/C units is not faulty. The filter is clean. What are other
'obvious' things to check?
3. It seems the air does not blow very hard in the upper floors. It
blows very hard on the first floor, but poorly above. Any ideas?