To cool a 3,500 square foot house, you would need a seven ton system. That would be equal to about 84,000 BTUs.
how big of a gas furnace do I need for a 2 story 2300 square foot house in northwest ohio
500
You can assume 50lbs/square foot for a one story pier/beam house with the attached fixtures not the owners posessions. You will need to go to 350 lbs/square foot for a concrete slab foundation. Be sure to add safety factors.
That's going to depend on how many rooms there are in the house, and how high the ceilings are. Neither of those numbers can be calculated from "2500 square feet".
141.75
how many tons of refrigeration need to 9,505 square foot
You need a 5 ton unit for that size house.
To cover this area you will need about 10.87 square meters of material.
a gallon of interior paint covers on average 400 square feet. you need to figure how many square feet of wall space you have to determine how many gallons you will need.
My home needs ventilation. What size attic fan would I need for a 1200 square foot house?
You'll need 12 times 12 = 144 square feet
We need more information. Houses come in all sizes. How many square feet of foundation? What state are you in?