The Top 3 Most Energy Efficient Types of Windows on the Market Today (and What They Cost)
The best window options for your particular home will largely depend on the climate where your home is located and other contextual considerations. These three types of windows perform well in many types of environments.
Triple Glazed Vinyl Windows
Triple glazed vinyl windows offer perhaps the highest value in window insulation, as they incorporate insulation between all three panes. (If you are aiming for the Passive House standard, triple pane windows are a requirement.) Many manufacturers, such as the Milgard Essence Series Wood Windows, offer two separate insulating air spaces with Low E glass and dual spacers. It can interrupt wasteful heat flow through the window and thus save on heating and cooling costs. These types of windows will generally be the most expensive on the market, with an average price of between $550 and $850 USD. However, the expected energy savings, especially for homeowners upgrading from single-pane windows, can lead to relatively quick payback periods.
Fiberglass Windows
Wood has been considered to be the most natural and energy-efficient material for window construction. Although, the tendency for wood to expand and contract with the seasons can lead to air leakage that compromises the energy efficiency of your home. Wood also requires some sealant or finish, so any condensation does not lead to rot. Fiberglass windows are often tougher and more durable than their wood counterparts, and once installed, these framed windows will require minimum maintenance. Marvin Windows and Doors offers manufactured window frames made from Ultrex®, which they claim to be eight times stronger than vinyl and three times stronger than vinyl/wood composites. These windows can resist fading, chalking, peeling and cracking, offers unparalleled strength and durability, and also meet or exceed federal ENERGY STAR® guidelines.
Gas-Filled Windows
Whether your budget allows you to choose between double or triple-paned windows, you should undoubtedly make it a priority to opt for gas-filled windows. As mentioned above, gas-filled windows offer increased insulation while simultaneously reducing issues with condensation. JELD-WEN® Windows offers a high-performance LoE3-366 glass with insulating argon gas to lower energy costs by assisting in keeping homes cooler in the summer and warmer in the winter. This technology also deflects direct sunlight to help reduce the fading of interior furnishings and prevent condensation. Ply Gem HP (high performance) Glass windows combine Low-E glass with argon gas fill and Warm Edge spacer options for super energy-efficient window options. This company also offers R-5 Windows, which provides some of the highest insulation capacity for windows on the market today.
So take a look at your windows today—they might be the most important element in your house.