Difference Between Double Pane & Triple Pane Windows

A window replacement will greatly improve your home’s energy efficiency, help you save on energy bills and make your home more comfortable. New windows can also boost your home’s curb appeal and increase resale value. You want to get a high quality product, but aren’t sure if you should buy double pane windows or triple pane. Does the third pane make a lot of difference when it comes to energy efficiency?

All Weather Windows and Doors in Calgary shares some information on triple pane windows.

What’s the difference between triple-pane and double-pane windows?

Window panes are literally the sheet of glass that separates the outside from the inside of your home. Older windows were all single pane, which made them cold and not very efficient. When the second pane came into play, windows became a sealed unit with an insulator binding the panes together.

That additional pane of glass in the triple pane window provides a better insulating barrier. If you install triple pane windows in your home, less energy will escape, you will have less condensation on the windows and find that they are a better noise barrier too.

More than that, that third pane of glass and extra space also allows window manufacturers to add more energy efficiency features. This further adds to efficiency, cost-savings and home comfort.

What are some benefits to triple pane windows over double pane?

Basically, it all comes down to that third pane of glass. That additional space in a triple pane window allows for more argon gas to be filled between the panes. Sealed units filled with argon gas make the window even more efficient enabling it to slow heat from leaving the home in the winter and heat from entering the home in the hot summer months. Double pane windows have argon gas too, but having that third cavity really makes a big difference.

That additional pane of glass also allows for an another layer of low-emissivity (Low-e) coatings. This coating is applied to the panes during manufacturing and helps to prevent heat transfer by creating an additional barrier between in the outside and the inside. In the summer, the Low-e coating helps to reflect UV rays, keeping your home cool and comfortable. Though double pane windows will have Low-e coatings too, that third layer will further boost efficiency.

Though triple pane windows will cost a little more than double pane, investing in efficiency will lower your monthly energy costs and save money in the long run. Plus, a quality window replacement can boost your home’s resale value.

Consider ENERGY STAR ratings for your climate zone.

Windows that are ENERGY STAR certified meet a set of standards for quality and efficiency. Installing ENERGY STAR certified windows and doors will reduce your energy bill, and your carbon footprint, by an average of 8 per cent, compared to non-certified windows and doors.

ENERGY STAR rates products based on specific climate zones. For example, Canada has 3 climate zones and some windows might not meet the requirements for the colder zones, but will be okay for the milder zones. In Calgary, we are in Zone 2. ENERGY STAR recommends that you purchase windows that are certified for a zone colder than the one you live in to maximize energy savings. That means you would want to purchase windows that are certified for Zone 3.

Double pane windows just squeak by ENERGY STAR requirements for our zone, where triple pane could exceed those requirements. Save more energy and money by installing triple pane windows for your next window replacement. Learn more about ENERGY STAR windows.

Windows in Calgary

All Weather Windows Renovations specializes in the manufacture and installation of windows and entry doors. With affordable monthly payment plans its easy for you to have highly energy-efficient windows and doors that:

• save you money by reducing your energy costs up to 12%.
• help keep your home comfortable all year-round.
• reduce outside noise, and, depending on the amount of humidity in your home, will have a lot less condensation in cold weather.
• make a real difference in protecting the environment.

All Weather Windows’ installers ensure professional installation:

• Five-year installation warranty.
• Comprehensive product warranty.
• Licensed, bonded, insured, WCB-Certified.
• Convenient year-round installation, even in winter!
• Knowledgeable staff ensures the job is done right.

Contact All Weather Windows today!


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