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What Are Thermal Windows?

5/14/2016 7:26:34 AM

​Windows are an important part of every home and business. They allow light to enter, permit natural ventilation on nice days, and provide an escape route in case of emergencies. Unfortunately, glass is a poor insulator, meaning heat can easily pass through it. Thermal windows are the energy-efficient solution to this problem.

What Are Thermal Windows?

As opposed to single-pane windows found in older homes and buildings, thermal windows have two or three panes. They’re also referred to as insulated windows, double- and triple-glazed windows, or double- and triple-paned windows – depending on how many sheets of glass they have.

Each pane is separated by a one-quarter to one-half-inch-wide airspace to substantially improve the window’s insulating ability. Spacers hold the panes in a precise location to create an airtight seal between them. This is important to improve insulating ability and prevent the surface between the sheets of glass from fogging up.

To maximize efficiency, some thermal windows are filled with argon or krypton, dense gases that insulate even better than air. Some thermal windows also receive a low-e coating to reflect heat back to the source (outside in the summer and inside in the winter).

Benefits of Thermal Windows

  • Lower your heating and cooling bills: About one-fifth of the energy lost in a well-insulated home occurs through the windows. This energy loss decreases if you replace old windows with thermal versions, which helps keep heating and cooling costs down.
  • Enjoy a more comfortable interior: High heat transfer through glass makes it uncomfortable to sit right by a single-pane window, especially on a cold winter night. Thermal windows keep drafts out for a more even, comfortable temperature throughout every room.
  • Insulate against outside noise: Whether it’s the noisy neighbor kids, traffic or construction, outdoor noise is unwelcome inside your home. The air space between panes in thermal windows insulates not only against heat transfer, but noise as well, so you can sleep or enjoy your favorite TV show with less interruption from outside.
  • Reduce condensation: Like a cold glass of water, a single-pane window tends to collect condensation when there’s a big temperature difference between the inside and outside. This is most likely to occur in the winter. Condensation causes beads of water to run down the glass and damage the sill. This is less likely to occur with double- and triple-pane thermal windows.

Other Considerations

  • You must replace them all: In order to enjoy the substantial benefits of thermal windows, you must replace all the windows in your home. This may seem cost prohibitive, but the resulting energy savings can help pay for the investment, which isn’t the case if you cut corners and only replace a few windows.
  • Installation counts: The best windows won’t meet your expectations if they’re installed poorly. Rely on professional installation from a qualified company for the best results.
For help choosing the right thermal window replacements for your home or business, please contact Weather Shield directly or find a dealer near you today.

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