insulated glass

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.

Argon Gas Callout

High Performance LoE2 272/Argon

High Performance LoĒ2 272/Argon

Double-insulated glass with a dual coating of LoĒ 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 LoE3 366/Argon

Premium High Performance LoĒ3 366/Argon

Double-insulated glass with a triple coating of LoĒ 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 LoE3 366/Argon/i89

Ultimate High Performance LoĒ3 366/Argon/i89

Double insulated glass with a triple coating of LoĒ on one glass surface, and one coating of i89 on the 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 a triple coating of LoĒ 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 a double coating of high-performance LoĒ 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. 


Glass Package Comparisons

  Winter Heat Loss
Reduction %
Summer Heat Gain
Reduction %
Center of Glass
U-Value
Solar Heat Gain
Coefficient
Clear Glass - - .33 .78
LoĒ²™ 272 47% 47% .26 .41
LoĒ³™ 366 50% 65% .25 .27
Energy Guard 68% 69% .13 .14

 

* compared to standard clear insulated glass

U-Values: Lower U-Values means better thermal performance
Solar Heat Gain Coefficient: Smaller numbers translate to better prevention of solar heat gain

Data from Cardinal Glass Industries 2008 Residential Glass Technical Guide

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