Insulated Glass Packages
Preservation Windows offer optional high-performance glass packages that combine our SST Warm-Edge Spacer System and low-emissivity (Low-E) glass with argon or krypton gas in dual- or triple-pane insulating glass units. These state-of-the-art windows are ENERGY STAR-qualified and designed to help reduce your energy spending year-round.
The EnergyMaxx insulated glass technology in Preservation Windows features multiple layer Low-E glass, the latest advancement in glass coatings. Annealed flat glass is vacuum coated with multiple layers of silver and titanium that combine to create high-efficiency glass with unsurpassed properties of energy efficiency, UV reflection, clarity, damage reduction and visible light transmittance. The result is added comfort and energy efficiency in both the summer and winter.
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| In summer, Low-E glass helps block unwanted solar heat gain. | In winter, Low-E glass reduces heat loss by reflecting warm air back into the room. |
EnergyMaxx Insulated Glass Packages
Insulated Glass Packages
Reducing energy loss is often the number one reason for purchasing replacement windows. Windows are roughly 80% glass, so it’s important to choose the ideal glass system for your home and climate. Upgrading to a high-performance Low-E (low-emissivity) insulated glass package may help further increase year-round energy savings.
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. Preservation windows and sliding patio doors offer a variety of EnergyMaxx insulated glass packages that meet new ENERGY STAR 7.0 certification in all climate zones.
Learn more about ENERGY STAR 7.0 program changes
EnergyMaxx now offers our innovative EnergMaxx PriME insulated glass package, which meets ENERGY STAR Most Efficient in all climate zones:
EnergyMaxx PriME
EnergyMaxx PriME combines three panes of glass, three surfaces of Low-E (low-emissivity) technology, two spaces of argon gas fill and two warm-edge spacer systems.
- EnergyMaxx PriME meets ENERGY STAR Most Energy Efficient in all climate zones.
- Provides a powerful energy-saving shield with three panes of glass, three surfaces of Low-E (low-emissivity) technology, two spaces of argon gas fill and two warm-edge spacer systems.
- EnergyMaxx PriME uses argon between the panes of glass, a more cost effective gas compared to krypton.
- Argon gas makes ClimaTech PriME an excellent choice that may help your windows qualify for tax credits.
There's an ENERGYMAXX Glass Package for your region
Along with EnergyMaxx PriME, Preservation offers a full selection of insulated glass packages to suit any region. Consult your window professional for the energy-efficient glass packages available for your home and climate zone.
ENERGYMAXX 4
EnergyMaxx 4 features a 1" single-surface multiple layer vacuum-deposition Low-E insulating glass unit filled with argon gas. It delivers performance up to 34% more energy-efficient than standard double-pane glass units.
ENERGYMAXX 7
EnergyMaxx 7 is 55% more energy-efficient than standard double-pane glass systems. It combines two panes of multiple layer vacuum-deposition Low-E glass with an interior glass pane and two insulating chambers of argon gas. The result is a triple-pane insulating glass unit that saves substantially more energy than standard insulating glass.
ENERGYMAXX SC ELITE
EnergyMaxx SC Elite incorporates two panes of multiple layer vacuum-deposition Low-E insulating glass filled with argon gas and provides performance nearly 38% more energy-efficient than standard double-pane glass units. EnergyMaxx SC Elite's enhanced solar control helps "beat the heat" on hot summer days.
ENERGYMAXX 10
EnergyMaxx 10 is our ultimate glass system - delivering performance 59% more energy-efficient than standard double-pane glass systems and nearly 80% more than clear single-pane glass units. This technology combines two panes of multiple layer vacuum-deposition Low-E glass with an interior glass pane and two insulating chambers of krypton gas. The result is a triple-pane insulating glass unit that delivers ultra-high energy efficiency.
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. Preservation windows and sliding patio doors offer a variety of EnergyMaxx®insulated glass packages that meet new ENERGY STAR 7.0 certification in all climate zones.