case study

HOME OWNER: Donaghey Residence | Nashville, TN 37205
HOME STYLE: Single Family, 2-Story Home
APPROX. SQ FT: 2,223

Energy Use - kilowatt-hour per year

BEFORE: 47,612 kWh/yr
AFTER: 43,920 kWh/yr

Reduced: 7%
Energy Cost Savings

BEFORE: $4,760/yr
AFTER: $4,350/yr

Savings: $410/yr
HOW MY ENERGY SAVINGS AFFECTED THE ENVIRONMENT:
Pounds of coal saved per year

3,001 lbs.
NUMBER OF HOMES POWERED PER YEAR

0.33 Homes^*
Electric cars powered per year

3.48 Cars

E3 removed old and dirty insulation from the attic and replaced it with spray foam on the roof deck and coated it with fire barrier paint. E3 also performed comprehensive air sealing on the home reducing air leakage by 29%. Finally, the main floor duct system was sealed, reducing the total duct leakage by 67%.

Click on the image above to view more images.