Table 2 – Calculated annual savings for a 1,540 ft2 house with well-insulated and sealed ducts, or no ducts, in the attic
Original attic condition |
Insulated and well-sealed ducts |
No ducts |
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R19 Attic Insulation |
Code-level Attic Insulation |
R19 Attic Insulation |
Code-level Attic Insulation |
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Attic system modification |
Add RB, add insulation |
Add RB |
Add RB |
Add RB, add insulation |
Add RB |
Add RB |
Miami (1) |
$75 |
$50 |
$40 |
$40 |
$20 |
$15 |
Austin (2) |
$110 |
$50 |
$40 |
$60 |
$20 |
$15 |
Atlanta (3) |
$100 |
$30 |
$25 |
$55 |
$15 |
$10 |
Baltimore (4) |
$170 |
$30 |
$20 |
$120 |
$10 |
$5 |
Chicago (5) |
$150 |
$20 |
$15 |
$110 |
$5 |
$5 |
Minneapolis (6) |
$180 |
$20 |
$10 |
$140 |
$5 |
$0 |
Fargo (7) |
$150 |
$15 |
$10 |
$120 |
$0 |
$0 |
Fairbanks (8) |
$210 |
$15 |
$10 |
$180 |
$5 |
$0 |