Types of Energy-Efficient Windows

When you’re in the market for new windows, there are many things to consider. Besides style, you want to ensure that your replacement windows are both functional and energy efficient.

Energy-efficient windows prevent air leakage and reflect heat, helping you save on your monthly energy bills. They also block UV rays, which reduce the likelihood of your carpet and furniture fading over time.


Vinyl windows are a popular choice because they’re affordable, durable and easy to maintain. They also have a high energy efficiency rating, making them an excellent choice for homeowners looking to save on their electricity bills.

Vinyl is a stable material that doesn’t expand or contract as much as wood and aluminum, which allows for a tight seal that prevents air leakage. This helps to keep indoor temperatures consistent, reducing strain on your HVAC system and boosting energy efficiency.

American-made vinyl windows are designed to conserve energy by preventing heated or cooled air from escaping your home or commercial space. This is accomplished through multiple mechanisms, including double or triple pane glass, argon or krypton gas fillings between window panes, and Low-E coatings that reduce the transmission of UV rays.


Fiberglass windows are a great choice for homeowners in Huntsville AL who want energy-efficient windows. They are an excellent insulator and help keep heat from transferring between indoor and outdoor spaces. They are also resistant to bending, warping and fading.

Fiberglass frames are durable and rigid, making them more difficult to install than vinyl or wood. However, if they are properly installed by a professional window installer, these windows will last for 50 years or more.

They are also a good choice for basements because they are able to resist moisture and humidity. The frames can be fitted with a gas like argon to reduce air leaks and increase insulation. They are also a good option for replacing rotting wood or old vinyl windows.


Wood windows offer a classic, warm look while providing great insulation. They are often crafted from hardwoods that are sustainably sourced, making them eco-friendly. They can also be crafted into custom sizes and shapes, allowing for more efficient installations.

They can also be equipped with features that prevent heated or cooled air from escaping the home or business, such as double or triple pane glass and argon or krypton gas fills between window frames. They may also be fitted with low-emissivity coatings to reduce the amount of harmful solar rays that pass through them.

The best way to gauge a wood window’s energy efficiency is by looking for its U-value and solar heat gain coefficient (SHGC). These ratings make it easy to compare windows and choose the most efficient one for your home or business.

Bay & Bow Windows

Whether incorporated into a living room or master bedroom, bay windows and bow windows draw the eye and increase the resale value of your home. They also offer a panoramic view and abundant natural light.

These window styles differ from each other: a bay window consists of one larger inoperable window with two smaller windows flanking either side; bow windows are comprised of four or more windows in a curved shape. Both allow a wide variety of window treatments and let in more light than traditional flat windows.

Unlike casement or awning windows, both bay and bow windows feature sills that can open for fresh air. This simple pleasure is not only refreshing but is beneficial for your health. It can even help with your indoor allergies.

Single Sliding Windows

One of the best-selling window types, single sliding windows offer a combination of wide views and top energy efficiency. Their smart design features a lift-and-slide mechanism that allows the window to slide open or closed, eliminating the need for overlapping sashes. This improves sealing and eliminates air leakage, which can increase a window’s energy efficiency.

They also feature Low-E glass that reflects infrared heat and reduces incoming cold. This reduces energy costs and improves comfort throughout the home. They also allow ample natural light to enter rooms, which cuts down on the need for artificial lighting and reduces energy consumption.

However, they require proper installation to prevent air infiltration and maximize energy performance. Hiring a professional installer ensures that your new window has an air-tight seal and is properly aligned within the frame, preventing drafts and loss of energy.