Getting the right equipment
When I had the house built I went to each air duct connection (where they split) and filled all the holes I could find with expanding foam. I removed the registers in the house and filled the area around them with foam (I had to cut off the excess that expanded). I recently had an IR scan of the home under negative pressure done and it did how a lot of hot air coming from the vents. The A/C was turned off at the time so that is what one would expect. The guy who did it did not seem alarmed by the return on his infra-red camera but that may only support what you have said - there is a lot of leakage.
Originally Posted by jtrammel
I am trying to learn about A/C before I have to buy and need all the help I can get.
At this point the contractors say they will do a load test but each has (so far) done just what you said. They looked at what I had and asked "Have you been comfortable?" and proposed just replacing the present equipment with similar equipment.
I don't know enough about load testing but how would I know they did not come up with results that merely support their original conclusion that two 3-ton units are what I need?
The dealer I am dealing with (I asked for quotations from 4) was the only one to talk about modifying the incoming and return air. They also did more checking of the exact model numbers of the equipment I have (most just looked at the outside and said -Oh that's a 2-Ton (it turns out to be a 2.5 ton).
I appreciate your input since, as I said before, this is Greek to me but it is a lot of money ($15K or so) and I want to feel good I did my homework before I sign on the dotted line.
Again, thanks for your help.