Table 3 – Calculated annual savings per ft2 with uninsulated ducts in the attic
(Values with Time-of-Day pricing shown for zones 1 and 2)
|
R19 Attic Insulation |
Code-level Attic Insulation |
||||
Zone |
Add RB, improve ducts, add insulation |
Add RB, improve ducts |
Add RB, add insulation |
Add RB |
Add RB, improve ducts |
Add RB |
Miami (1) |
$0.30 ($0.38) |
$0.28($0.36) |
$0.11($0.15) |
$0.09($0.12) |
$0.26($0.34) |
$0.08($0.11) |
Austin (2) |
$0.47($0.34) |
$0.44($0.31) |
$0.16($0.13) |
$0.09($0.10) |
$0.39($0.29) |
$0.08($0.08) |
Atlanta (3) |
$0.43 |
$0.39 |
$0.13 |
$0.05 |
$0.35 |
$0.05 |
Baltimore (4) |
$0.78 |
$0.69 |
$0.21 |
$0.05 |
$0.61 |
$0.04 |
Chicago (5) |
$0.75 |
$0.66 |
$0.18 |
$0.04 |
$0.59 |
$0.03 |
Minneapolis (6) |
$0.81 |
$0.70 |
$0.19 |
$0.03 |
$0.63 |
$0.02 |
Fargo (7) |
$0.70 |
$0.61 |
$0.17 |
$0.02 |
$0.54 |
$0.01 |
Fairbanks (8) |
$1.00 |
$0.87 |
$0.20 |
$0.02 |
$0.80 |
$0.00 |