Dare County, North Carolina

Home Building Efficiency Report

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US Climate Zone Map
3A – Warm Humid

Dare County, North Carolina is located within the Warm Humid climate zone, which also has the designation of #3A. 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 warm-humid climate is defined as a region that receives more than 20 inches (50 cm) of annual precipitation and where a thermometer can reach either 67 °F for 3,000 hours or 73 °F for 1,500 hours during the warmest six consecutive months of the year through evaporative cooling.

Best Energy Saving Products

We've outlined a handful of building products that should be tailored for homes specifically in your North Carolina 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 Dare 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 Dare County should be equal to or less than 0.25. 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
3A – Warm Humid
0.3 0.55 0.25 ≤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*
Reserve Casement, Double Hung, Awning, Single Hung, Picture Wood/Aluminum Clad New 0.26-0.46 0.16-0.6
W-2500 Casement, Awning, Double Hung, Fixed Wood, Clad-Wood New, Replacement 0.24-0.47 0.17-0.6
100 Series Casement, Double Hung, Awning, Gliding, Picture, Single Hung Composite New, Replacement 0.23-0.32 0.16-0.42
Renewal Casement, Double Hung, Awning, Bay, Gliding, Picture Vinyl Replacement 0.25-0.32 0.14-0.45
Siteline Casement, Double Hung, Fixed, Bay, Sliding, Awning Wood, Clad-Wood New, Replacement 0.18-0.47 0.18-0.67

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* Each product has various options that impact energy performance.