Energy Efficiency

Windows and doors for the energy-conscious homeowner

Engineered to match the climate needs of your region

canada_map_climate-zones.jpgmilgard_map_climate-zones.jpgAt Milgard, we help consumers like you make an impact on their energy consumption through our energy-efficient windows and patio doors. Leaky and inefficient windows, skylights and doors account for poor insulation and higher energy usage in households. A lot depends on where you live:

  • Cold climates lose energy in the form of heat
  • Hot climates lose energy in the form of cooling

Tested and Built for Your Climate

All Milgard windows and patio doors are designed to meet tough thermal and solar requirements of state and local jurisdictions. We conduct thermal simulations to improve energy performance in our windows and patio doors so our consumers can enjoy a more comfortable home. We make it easy to meet local energy codes and green building efficiency standards with a selection of performance enhancing features. In fact, Milgard has options available to tailor the components of windows and doors to specific climates—perfectly matching the product to your region’s energy needs.

Milgard adheres to ENERGY STAR® v6 requirements to meet or exceed U-Factor and Solar Heat Gain Coefficient (SHGC) criteria for the zones shown. Download our Energy Brochure.



Learn what to look for in an energy efficient window.
ENERGY STAR® is a program administered by the U.S. Environmental Protection Agency (EPA)

Milgard Energy Performance Options




Your energy efficient windows could include one or more of the following features based on your climate.

ENERGY STAR v5 Northern*



SunCoat® or SunCoatMAX® Low-e coatings

EdgeGardMAX® spacers

Argon or Krypton gas-filled 

4th Surface

Triple Glaze

ENERGY STAR v6 North-Central



ENERGY STAR v6 South-Central



ENERGY STAR v6 Southern



High Efficiency Package






*Energy Star V6 Northern goes into effect January 1, 2016

White Paper: Energy Efficient Home

Take a Look Inside an Eco Home

Thirty-four Tuscany® Series vinyl windows and four Ultra™ Series fiberglass patio doors were installed in this sustainable eco-home. The builders sourced sustainable and recycled materials for minimal environmental impact. The contemporary style residence is a certified Department of Energy Challenge Home, ENERGY STAR® home and Green Built Texas Home.

Wondering what kind of windows or doors fits you? Take a quiz to find out.

Help Me Choose

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