1. 2200 sq ft house 2. Three attics (front, back, middle) 3. Insulation = shredded newspaper treated with flame retardant. a. The insulation is crumbling into dust. 4. Windows on house are single paned, aluminum CHEAP windows a. The kind used in houses in the 1960s. 5. House was built in 1964. 6. Windows are chaulked but still leak tremendous amounts of heat/cool because, as I said, they are cheap windows. (You can feel the heat radiating off of them right now.)
1. The a/c guy only wants to replace our 4 ton unit with another 4 ton unit. His reason is that technology has advanced and a new 4 ton unit will work better and cool better. Question: Will it? 2. Our contention is that (as the a/c guy explained to us) 2200sqft/500 = 4.4 tons of a/c. Question: If the equation comes out to be 4.4 tons - shouldn't the a/c guy go to at least 4.5 tons? 3. Given all of the bad problems with the house (and yes - we should reinsulate the house and get better windows - but I'm unemployed and we can barely afford to get the new a/c) - Question: Should the a/c guy blindly follow the specs he is quoting or should he realize that, given the condition of the house, he should increase the number of tons to compensate for the conditions?
Our outlook is that, given the conditions of the house, a larger unit would work better. We might have to pay more for it but at least, here in Houston, Texas - we would stay cool inside while the temperature outside rises to over 100 degrees.
Please give me some feed back on this because we would like to be able to present some valid arguments to the a/c person (other than what we've already pointed out to this guy) on exactly why this blue book's equations can not be strictly adhered to and instead need to be modified to our needs.
Thanks in advance for any help you can give.