Vanderburgh County, Indiana

Home Building Efficiency Report

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US Climate Zone Map
4A – Mixed Humid

Vanderburgh County, Indiana is located within the Mixed Humid climate zone, which also has the designation of #4A. The US Department of Energy has split the United States into eight zones to help in creating optimal building practices to achieve the most energy savings within homes.

A mixed-humid climate is defined as a region that receives more than 20 inches (50 cm) of annual precipitation, has approximately 5,400 heating degree days† (65 °F basis) or fewer, and where the average monthly outdoor temperature drops below 45 °F (7°C) during the winter months.

† Heating Degree Days The degree-day measurement is the difference in temperature between the mean (average) outdoor temperature over a 24-hour period and a given base temperature for a building space, typically 65 °F. For example, if the mean temperature at a given location for January 3 is 35 °F, then the heating degree days measurement for that day is 30 (65 - 35 = 30).

Best Energy Saving Products

We've outlined a handful of building products that should be tailored for homes specifically in your Indiana county. We detail the recommendations, how to interpret them, and then some of the more popular brands that meet or exceed those energy-saving standards.

Windows in Vanderburgh County are expected to have a U-Factor of 0.3 or less. The lower the U-Factor value of a window, the better it is at keeping heat inside the home.

The expected Solar Heat Gain Coefficient (SHGC) of windows installed in Vanderburgh County should be equal to or less than 0.4. This value measures how well a product can resist unwanted solar heat gain, which is important in the warmer summer months.

Climate Zone Window U-Factor Skylight U-Factor Glazed SHGC Air Leakage
4A – Mixed Humid
0.3 0.55 0.4 ≤5

Any new or replacement window will be better at preserving energy than an old leaky one. Double paned windows with argon gas are the most energy efficient, but also the most expensive.

Manufacturer Product Type Material Installation Price U-Factor* SHGC*
Siteline Casement, Double Hung, Fixed, Bay, Sliding, Awning Wood, Clad-Wood New, Replacement 0.18-0.47 0.18-0.67
350 Series Casement, Double Hung, Single Hung, Awning, Sliding Vinyl New 0.24-0.29 0.14-0.41
400 Series Casement, Double Hung, Awning, Bay, Gliding, Picture Wood Interior, Vinyl Exterior New, Replacement 0.24-0.32 0.16-0.6
Premium V-4500 Fixed, Bay, Single Hung, Casement, Sliding, Awning Vinyl New, Replacement 0.18-0.47 0.17-0.61
Elevate Casement, Double Hung, Bay, Awning, Picture Wood Interior, Fiberglass Exterior New 0.2-0.43 0.18-0.56

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* Each product has various options that impact energy performance.