North-Central
North-Central Climate Zone Window Criteria
| Climate Zone | U-Factor1 | SHGC2 |
|---|---|---|
| North-Central | ≤ 0.25 | ≤ 0.40 |
1 Btu/h·ft2·°F
2 Solar Heat Gain Coefficient
| Climate Zone | U-Factor1 | SHGC2 |
|---|---|---|
| North-Central | ≤ 0.20 | ≤ 0.40 |
*Products must meet this criteria to be eligible for federal tax credits.
Look for these labels:
Windows that are certified to meet the ENERGY STAR requirements in your climate zone have labels that will include the following area shaded:
*Note that some products may meet the criteria in multiple climate zones and can therefore have multiple climate zones shaded*
*For example, a window certified to meet the North-Central zone criteria may also meet the South-Central criteria; therefore, the label will have both climate zones highlighted*
You may also find products that are certified to meet the requirements in all 50 states, and have labels that look like this:
ENERGY STAR certified products must have certified U-factor and Solar Heat Gain Coefficient (SHGC) ratings. These ratings must meet strict qualification criteria.
Northern and North-Central Climate Zone Door Criteria
| Glazing Level | Climate Zone | U-Factor1 | SHGC2 |
|---|---|---|---|
| Opaque | All Zones | ≤ 0.17 | No Rating |
| ≤ ½-Lite | All Zones | ≤ 0.23 | ≤ 0.23 |
| > ½-Lite | Northern | ≤ 0.26 | ≤ 0.40 |
| North-Central |
1 Btu/h·ft2·°F
2 Solar Heat Gain Coefficient
| Climate Zone | U-Factor | SHGC |
|---|---|---|
| Northern | ≤ 0.20 | ≥ 0.20 |
| North-Central | ≤ 0.20 | ≤ 0.40 |
** All types of exterior doors must meet ENERGY STAR criteria (not Most Efficient) to be eligible for 25C Federal tax credits.
Look for these labels:
Doors that are certified to meet the ENERGY STAR requirements in your climate zone have labels that will include the following area shaded:
*Note that some products may meet the criteria in multiple climate zones and can therefore have multiple climate zones shaded*
You may also find products that are certified to meet the requirements in all 50 states, and have labels that look like this:
ENERGY STAR certified products must have certified U-factor and Solar Heat Gain Coefficient (SHGC) ratings. These ratings must meet strict qualification criteria.
North-Central, South-Central, and Southern Climate Zone Skylight Criteria
| Climate Zone | U-Factor1 | SHGC2 |
|---|---|---|
| North-Central | ≤ 0.50 | ≤ 0.25 |
| South-Central | ||
| Southern |
1 Btu/h·ft2·°F
2 Solar Heat Gain Coefficient
| Climate Zone | U-Factor | SHGC |
|---|---|---|
| North-Central South-Central Southern | ≤ 0.43 | ≤ 0.23 |
*Skylights must meet this criteria to be eligible for federal tax credits.
Look for these labels:
Skylights that are certified to meet the ENERGY STAR requirements in your climate zone have labels that will include the following area shaded:
*Note that some products may meet the criteria in multiple climate zones and can therefore have multiple climate zones shaded*
You may also find products that are certified to meet the requirements in all 50 states, and have labels that look like this:
ENERGY STAR certified products must have certified U-factor and Solar Heat Gain Coefficient (SHGC) ratings. These ratings must meet strict qualification criteria.