Information About Your Climate Zone

Richmond City, Virginia is located in the North-Central Climate Zone. When shopping for ENERGY STAR certified windows:

North-Central Climate Zone Window Criteria

WINDOWS
Climate ZoneU-Factor1SHGC2
North-Central≤ 0.25≤ 0.40

1 Btu/h·ft2·°F 
2 Solar Heat Gain Coefficient

WINDOWS (Most Efficient Criteria*)
Climate ZoneU-Factor1SHGC2
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*

Windows label for North Central

You may also find products that are certified to meet the requirements in all 50 states, and have labels that look like this:

window, door and skylight label for all climate zones
certified label for all climate zones

ENERGY STAR certified products must have certified U-factor and Solar Heat Gain Coefficient (SHGC) ratings. These ratings must meet strict qualification criteria.

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