HEAT SMART® PLUS WINDOW SYSTEMS

Heat Smart® Plus Window Systems offer three levels of thermal protection. The charts below show the comparative performance of each Loewen window system and will help you better understand their benefits.

Learn more about thermal design.

HEAT SMART® PLUS 1

Good. Double glazed, with one layer of Low E² coating and one 1/2" air space filled with argon gas*.

HEAT SMART® PLUS 2

Better. Triple glazed, with one layer of Low E² coating and two 1/2" air spaces filled with argon gas*.

HEAT SMART® PLUS 3

Best. Triple glazed, with two layers of Low E² coatings and two 1/2" air spaces filled with argon gas*.

Heat Smart® Plus Window Systems also protect furnishings by screening out much of the damaging ultraviolet rays that enter the home. This reduces fading and related damage.

R VALUE

This chart compares Heat Smart® Plus with clear double and triple pane glass units by measuring the resistance of heat transfer through glass.

The higher the number, the better the window insulates. R-Value measured at center of glass.

 

SOLAR HEAT GAIN

This chart measures the ratio of solar heat gain through a window system compared to an unobstructed opening. Heat Smart® Plus compared with clear double and triple pane glass units.

 

UV TRANSMITTANCE

This chart measures the percentage of ultraviolet radiated wavelengths allowed to be transmitted through the glazed product. Heat Smart® Plus compared with clear double and triple pane glass units.

 

ADDITIONAL GLAZING STANDARDS

• Loewen uses 1/8" double strength glass, giving vast improvement to strength, durability and clarity over thinner glass.
• All standard sealed units feature machine applied butyl primary sealant and polyisobutyl secondary sealant. This reduces the chance of seal failure, improves argon gas retention and increases strength.
• Minimal use of exposed exterior caulking on glass surface for a clean, aesthetically pleasing appearance.
• All standard Loewen sealed units are argon gas filled with no spacer bar piercing*.
• Glazing fabrication is automated.
• Our automated glazing assembly line allows robots to excel at what they do best — precise, repetitive tasks — and lets our skilled operators concentrate on issues of quality and performance. The robotic line creates Loewen sealed units with the glass in a vertical position, which prevents the irregularity caused by deflection (glass sagging during production) that can rob units of their hermetic seal over time.
• Specially treated glass designed for southern exposures and hot climates is available. Sun 140 glass helps to provide comfort and shading from strong sunlight.

***Ashrae calculated values Window 4.1. 12mm airspace (0.5 inches). Does not apply to sealed units with capillary tubes installed.