SolarTherm® Insulated Glass Packages
The energy-saving properties in the glass unit are a key factor in the thermal performance of your windows. Windows are roughly 80% glass, so you’ll want to choose energy-efficient glass technology for your home and climate conditions. Alpine Windows feature a dual-pane insulating unit** with double-strength glass. Choosing a Low-E (low-emissivity) glass package will further increase the energy efficiency. Low-E glass has a virtually clear metallic coating that acts as a thermal mirror, reflecting radiant heat back into your home during winter and reducing unwanted solar energy in the summer.
Summer
In summer months, Low-E glass helps block unwanted solar heat gain.
Winter
In winter months, Low-E reduces heat loss by reflecting warm air back into your home.
SolarTherm® PriME
Our new SolarTherm® PriME glass packages can help reduce your energy fuel consumption – and may qualify for federal tax credits.1
- Helps prevent energy loss, keeping your home more comfortable
year-round - Meets rigorous ENERGY STAR Most Efficient criteria that may help qualify for tax credits
SolarTherm PriME incorporates three panes of glass, three surfaces of Low-E (low-emissivity) technology, two warm-edge spacer systems and two spaces filled with argon gas – and meets ENERGY STAR Most Efficient in all climate
Enhanced Insulation with Argon Gas
Heavier than air, argon gas is an odorless, colorless, safe inert gas
The greater density of argon increases the thermal barrier to help prevent energy loss through the window
SolarTherm® PriME uses argon between the panes of glass, which is a more cost-effective solution compared to krypton gas
SolarTherm® PriME is available for Montrose® and 80 Series Windows and Westbridge® 6500 Sliding Patio Doors2 – see your Alpine Sales Representative for specific product offering.
Why Use the Super Spacer® Structural Foam Spacer?
The structural foam design inhibits the path of escaping far more efficiently than any other type of spacer, reduces conduction and helps prevent condensation.
Super Spacer® Structural Foam Spacer's Proven Advantage
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- True warm-edge
- Advanced multilaye vapor barrier structure
- Double-seal system
- Substantially more thermally efficient at the edge than windows made with conventional aluminum spacers
- Reduces the chance of seal failure
- Improved sound absorption over traditional metal spacers
- Helps to reduce year-round energy use
- Tested and proven durability
Built For Your Climate
The ENERGY STAR® label certifies that the window is a positive choice for energy efficiency, fuel savings and the environment. ENERGY STAR is a government-backed voluntary partnership program sponsored by the U.S. Environmental Protection Agency and the U.S. Department of Energy to help consumers recognize energy-efficient products. It’s good for you and good for the environment!
As of October 23, 2023, the ENERGY STAR 7.0 program implemented more stringent energy-saving criteria for windows and doors, with lower U-Factor and Solar Heat Gain Coefficient performance requirements. Alpine windows and sliding patio doors offer a variety of SolarTherm® insulated glass packages that meet new ENERGY STAR 7.0 certification in all climate zones.
1For tax credit information, visit www.energystar.gov. The information provided is for informational purposes only and not intended to substitute for expert advice from a professional tax/financial planner or the Internal Revenue Service (IRS). 2Patio doors must meet applicable ENERGY STAR requirements for “entry doors,” not ENERGY STAR Most Efficient windows criteria. **Insulated glass (IG) units with capillary tubes will be air filled, will not contain argon or krypton fill, and may have different performance values than standard argon or krypton fill.