We moved into a new home in October in Virginia. The house has 4200 square feet of finished living space on 3 floors. Typical temps are 90-95 July through Sept., and it has been 88-90 the last few days.
The top floor is about 700 of the 4200. We asked the builder if the units would be sufficient to cool 3 floors. The answer was, "we have been using the same HVAC on this floor plan with 3 levels and have never had any issues."
Now that it is June, our 2nd floor will not go below 75, no matter how low it is set, and the 3rd floor has been 82 even though it is set on 68. There are 5 other homes on our street with similar issues. These inside temps are at 8:00pm!!!! This is not satisfactory to me after spending 500k on a house to have this occur. Any idea how I can prove that the units are not sufficient? The builder had the HVAC company come out and do more freon, as well as adjust the dampers. It is even hotter now!
What they installed was the following.
Lennox Merit Series
10ACC-030-230 2.5 Tons (First floor)
10ACC-036-230 3 Tons (Second and Third)
That is only 5.5 tons of cooling for 4200 sft? I had read online that 1 ton per 500sft was a good estimate (That would mean a minimum of 8 tons)?
Any advice on how I can prove that this is BS would be appreciated! Any reources that will prove this so I have some leverage to get them to change this?