It doesn't work that way. In FL, Manual J calculations are required and systems must be sized accordingly. The next size up is 1/2 ton which would be 15% larger when going from 3 to 3.5 tons. Regardless, I just looked up 2 very similar houses, one framed and one block, in my area and the Manual J heat load was 4% higher in the block home, which had 4% more square footage under air.
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Originally Posted by jimbo2012
But in a hurricane, the roof and windows are just as vulnerable.
For that reason to have a house with no roof makes little difference.
At that point we've evacuated and called the insurance Co.
The insulation in a concrete walled homes is very thin or minimal like 1".
It was mentioned the HVAC's in both are sized the same, that may be because the price difference is so small between two sized units is minimal and or better discounts buying 100 of one size vs 50 50
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