Thermo-Tech Premium Windows and Doors

More Glass Options For A Clear Advantage


Thermo-Tech Premium Windows and Doors offers energy-saving glass performance packages to fit a variety of needs. Each are thoroughly tested for thermal performance to the most widely recognized national standards. This ensures that our windows will provide a lifetime of reliable, energy saving performance.


High Performance LoĒ² 272/Argon

High Performance LoĒ² 272/Argon

Double insulated glass with LoĒ² 272/Argon on one glass surface

Thermo-Tech windows come standard with double-pane insulated LoĒ² 272 glass featuring two panes of double-strength glass with an argon gas filled airspace for superior insulation. This option improves heating efficiency by nearly doubling the insulating power over ordinary clear glass, and blocks enough solar heat that cooling loads can be cut by 25% or more. Fading of furniture, floors, and drapes is reduced by filtering out 84% of the Sun’s harmful ultraviolet rays. Thermo-Tech products utilizing this High Performance Glass meet Energy Star guidelines in casements, fixed casements, direct sets, and awnings.


Premium High Performance LoĒ³ 366/Argon

Premium High Performance LoĒ³ 366/Argon

Double insulated glass with LoĒ³ 366/Argon on one glass surface

Our double-pane insulated LoĒ³ 366 heat-reflecting glass adds even more insulating power for premium thermal performance. Double-strength heat-reflecting glass with an Argon filled airspace delivers a balance of solar control, thermal performance, and high visibility to optimize home energy savings and comfort. Plus, this option provides additional fade protection by blocking 95% of the Sun’s harmful ultraviolet rays. Thermo-Tech products utilizing this Premium High Performance Glass meet Energy Star guidelines in casements, fixed casements, direct sets, and awnings.


Ultimate High Performance LoĒ³ 366/Argon/i89

Ultimate High Performance LoĒ³ 366/Argon/i89

Double insulated glass with LoĒ³ 366/Argon on one glass surface and i89 on interior surface

Thermo-Tech’s Ultimate High Performance glass delivers a “twin punch”. It offers all the benefits of our Premium High-Performance glass while maximizing thermal and visibility benefits, compared to other double-pane options, by adding a LoĒ i89 coating on the interior glass surface. Together this combination ensures the greatest thermal performance in all dual-pane applications. Thermo-Tech products utilizing this Ultimate High Performance Glass meet Energy Star guidelines in single hungs, double hungs, casements, fixed casements, direct sets, sliding windows, awnings, and patio doors.


Energy Guard Triple Insulated Glass

Energy Guard Triple Insulated Glass Energy Star Most Efficient

Triple insulated glass with high performance LoĒ³ 366/Argon on two glass surfaces

Get the maximum energy savings, comfort, ultraviolet protection, and the superior sound proofing of Thermo-Tech’s Energy Guard glass. Energy Guard windows incorporate three layers of double-strength glass with LoĒ³ 366 on two glass surfaces, and two half-inch argon gas filled insulated air spaces. This option meets Energy Star’s Most Efficient criteria in the North/Central, South/Central, and Southern Zones, and is available in casements, fixed casements, direct sets, and awnings.


Energy Guard PLUS Triple Insulated Glass

Energy Guard PLUS Triple Insulated Glass Energy Star Most Efficient

Triple insulated glass with high performance LoĒ² 272/Argon on two glass surfaces

Energy Guard PLUS triple-pane glass meets Energy Star Most Efficient standards for many tough climates including the Northern zone. Get maximum energy savings, comfort, ultraviolet protection, and sound proofing PLUS the added solar heat-gain necessary to optimize home heating during frigid Northern winter months. Energy Guard PLUS utilizes three layers of double-strength glass with LoĒ² 272 on two glass surfaces, and two half-inch argon gas filled insulated air spaces. Energy Guard PLUS is available in casements, fixed casements, direct sets, and awnings.

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