Energy Star Windows & Doors

Residential Windows, Doors, and Skylights

Want more from your windows? Ask for ENERGY STAR.

ENERGY STAR qualified windows, doors, and skylights save you energy and money, increase the comfort of your home, and protect your valuable possessions from sun damage. They are also better for the environment because lowering your energy use means less air pollution from power plants.

Save money and energy.

Replacing single-paned windows with ENERGY STAR qualified windows or choosing ENERGY STAR overthe typical clear-glass double-paned alternative can save a significant amount of money on your energy bill.

Say goodbye to winter drafts and sweating in the summer sun.

Thanks to a host of new technologies, ENERGY STAR qualified windows, doors, and skylights keep your home cooler in the summer and warmer in the winter, making you more comfortable.

ENERGY STAR qualified windows, doors, and skylights do more than just lower energy bills – they deliver more comfort, create less condensation, and protect your valuables from sun damage better than conventional clear-glass double-paned alternatives. By lowering your energy use, these windows are also better for the environment: The less energy you use, the less air pollution power plants produce.

Protection from Winter Chills

On cold winter nights, do you avoid seats near the window? Do drafts chase you from room to room? When the mercury drops to single digits, even tightly sealed traditional double-paned windows can still make you shiver. The cold, inside surface of an inefficient window pulls heat away from your body, so you can feel chilly in a sweater with the thermostat at 70 degrees. With ENERGY STAR qualified windows, the inside window glass stays warmer, so you can relax in your window seat even when the temperature outside dips well below freezing.

Shielding from Summer Heat

In summer, do your windows seem like giant heat lamps? Are you denied your view because you have to keep your blinds perpetually closed? A typical double-paned, clear-glass window allows approximately 75 percent of the sun’s heat into your home, almost as much as a single-paned window. Windows qualified for ENERGY STAR in the North/Central, South/Central and Southern ENERGY STAR Climate Zones transmit only 30 to 55 percent of the sun’s heat, usually without noticeably reducing the visible light. You get the light but a lot less heat. So you can relax and enjoy the view in summer too.

Protection for Valuable Interiors

Your favorite photograph, half a loveseat, your Persian rug, even your flooring can fade or discolor after repeated exposure to direct sunlight. An ENERGY STAR qualified window with Low or Moderate Solar Gain Low-E coatings–the same coatings that keep out the summer heat–can reduce fading by up to 75 percent. These coatings are like sunscreen for your house, blocking damaging ultraviolet light without noticeably reducing visible light.

Reduced Condensation

When you open your curtains on winter mornings is the ice or fog you see on the inside or the outside? If an inefficient window or window frame gets too cold, water can condense or even freeze on the interior surface and then pool on the sill. Over time, chronic condensation can damage sills, cause paint to crack, and encourage the growth of mold. Advanced frame, glass coating, spacer and other technologies enable ENERGY STAR qualified windows to keep the inner surface of the glass and frame warmer, reducing the potential for condensation and ensuring a clearer view on winter mornings.

Don’t Forget the Last “Window”

In most homes the air leaks and unsealed gaps under doors and around pipes allow as much heat in or out as a wide-open window. Make your home more comfortable and efficient with Home Sealing.

Protect your home’s interior

Many ENERGY STAR qualified windows, doors, and skylights act like sunscreen for your house, protecting your photographs, artwork, furniture, carpets, and wood floors from sun damage.

Buy with confidence.

Every ENERGY STAR qualified window, door, and skylight is independently certified to perform at levels that meet or exceed strict energy efficiency guidelines set by the U.S. Department of Energy.


To purchase the most efficient window for your home, ask for products that are ENERGY STAR qualified in your Climate Zone. To learn more, see the window purchasing tips.

Confirm the ENERGY STAR Label

Before the new product is installed, check for the ENERGY STAR label and make sure you have received the correct product.

Windows should display an official ENERGY STAR label (examples below) or equivalent custom label, next to the NFRC label. There are a variety of custom labels, but all should include the same elements as the official label:

The ENERGY STAR Certification Mark

A map showing where the product is qualified

A qualification statement

Seal and insulate with Home Sealing. Sealing your home’s envelope is one of the most cost-effective ways to lower your home’s energy bills and improve your comfort.

What’s in a pane – or two?

All energy efficient windows have at least two panes, but not all double-paned windows are energy efficient. Twenty years ago, double-paned meant energy efficient; today, advanced technologies have enabled the development of windows that are much more efficient than traditional clear-glass double-paned windows. For maximum energy savings, don’t count panes; count on ENERGY STAR.

Have Windows Properly Installed

Proper installation is critical for achieving full product performance and avoiding water damage. Windows, doors and skylights should be installed by trained installers according to manufacturer instructions. Many manufacturer warranties are void if the product is not installed according to instructions. When hiring a contractor, interview candidates and ask for references. The Federal Trade Commission recommends questions to ask potential contractors . (new document) If installation requires scraping lead-based paint, be sure to take proper precautions.


By: Charlie McCurry

About the Author:

S&K Roofing, Siding and Windows is Maryland’s leading company in roofing and maintenance-free home exteriors. Family-owned and operated since 1980, S&K Roofing, Siding and Windows provides high-quality exterior home workmanship and customer service that is among the best in the industry. We offer maintenance-free home exteriors including roofing, siding, windows, doors, gutters and downspouts, custom trim/wrap, and decks.

To learn more visit

Types of Roofing

Asphalt shingles account for about 80% of the residential roof surfacing in the United States. Asphalt shingles are measured against a variety of standards that evaluate fire and wind resistance, tear strength, and other key performance indicators. Asphalt shingles come in “standard” (or 3-tab) and “designer” (architectural or multi-layered) varieties. Standard shingles have a lightly-textured flat surface, while designer shingles have a highly textured surface.

Wood shingles and shakes are made from cedar, redwood, southern pine and other woods; their natural look is popular in California, the Northwest and parts of the Midwest. Wood shingles are machine-sawn; shakes are handmade and rougher looking. A point to consider: Some local building codes limit the use of wood shingles and shakes because of concerns about fire resistance. Many wood shingles and shakes only have Class C fire ratings or no ratings at all. However, Class A fire ratings are available for certain wood shingle products that incorporate a factory-applied, fire-resistant treatment.

Tile — clay or concrete — is a durable roofing material. Mission and Spanish-style round-topped tiles are used widely in the Southwest and Florida, and flat styles also are available to create French and English looks. Tile is available in a variety of colors and finishes. Tile is heavy. If you are replacing another type of roof system with tile, you will need to verify that the structure can support the load.

Slate is quarried in the United States in Vermont, New York, Pennsylvania and Virginia. It is available in different colors and grades, depending on its origin. Considered virtually indestructible, it is, however, more expensive than other roofing materials. In addition, its application requires special skill and experience. Many old homes, especially in the Northeast, still are protected by this long-lasting roofing material.

Metal, primarily thought of as a low-slope roofing material, has been found to be a roofing alternative for home and building owners with steep-slope roofs. There are two types of metal roofing products: panels and shingles. Numerous metal panel shapes and configurations exist. Metal shingles typically are intended to simulate traditional roof coverings, such as wood shakes, shingles and tile. Apart from metal roofing’s longevity, metal shingles are relatively lightweight, have a greater resistance to adverse weather and can be aesthetically pleasing. Some have Class A fire ratings.

Synthetic roofing products simulate various traditional roof coverings, such as slate and wood shingles and shakes. However, they do not necessarily have the same properties.

Before making a buying decision, NRCA recommends that you look at full-size samples of a proposed product, as well as manufacturers’ brochures. It also is a good idea to visit a building that is roofed with a particular product.

Source: National Roofing Contractors Association (NCRA)

By: Charlie McCurry

About the Author:

S&K Roofing, Siding and Windows is Maryland’s leading company in roofing and maintenance-free home exteriors. Family-owned and operated since 1980, S&K Roofing, Siding and Windows provides high-quality exterior home workmanship and customer service that is among the best in the industry. We offer maintenance-free home exteriors including roofing, siding, windows, doors, gutters and downspouts, custom trim/wrap, and decks.

To learn more visit