Ventilation area in square feet.
Attic size for 1500 sq ft house.
So you would want to install a 3 5 ton unit.
If there is poor insulation efficiency in your home its best to estimate higher tonnage.
To determine the size of your attic multiply the width by the length of the attic floor in feet.
For a single story house this is usually the same as the square footage of the house itself plus any attached garage area.
20 x 50 1 000 sq.
House square footage ac unit size estimate.
Cost to replumb a house.
Use the old school equation.
So for a 500 square foot area your estimate will vary between 145 to 200 if you do it yourself.
To estimate costs for your project.
Determine the home s cubic measurement by multiplying the square footage by ceiling height.
Actual costs will depend on job size conditions and options.
Net free area in square inches.
There are two different ways to get a ballpark size estimate for your house and one more precise way that we will discuss in this section.
So for instance a 1 500 square foot home would look something like this.
Example 20 wide by 50 long attic.
As an example let s use a home that measures 2200 square feet has an average floor to ceiling height measurement of 8 feet and a whole house fan with cfm rating of 1600.
For a professional job add between 150 to 300 for labor and you re looking at around 300 to 500 for 6 hours of work.
The average cost per square foot is between 0 64 1 19.
The federal housing administration recommends 1 square foot of attic ventilation for every 150 square feet of attic space.
Building codes typically echo the administration s guidelines.
Attic area in square feet.
For instance if your house has an overall floor area of 1 500 square feet and 8 foot ceilings multiply 1 500 by 8 to get 12 000 cubic feet of volume.
Multiply the volume by 30 to get 360 000.
2200 square foot home x 8 inch ceiling height 17600 cubic feet.
For a basic project in zip code 47474 with 500 square feet the cost to insulate an attic starts at 1 68 3 25 per square foot.
In the example above you would estimate a 4 ton unit for a poorly insulated 2 200 sq ft.
An accurate estimate depends on the number of bathrooms how far they are from the kitchen where the laundry room is and the number of fixtures.
Set project zip code enter the zip code for the location where labor is hired and materials purchased.
For example a 2 200 sq ft.