Greatly reduce your energy usage in the Southwest.
- Vinyl frame windows
- AC Capacity: 3.5 tons for 2-pane clear house, 2.5 tons for LoĒ² house
- 17% window-to-floor area ratio
- Air/duct leakage and thermostat calibration tested and balanced
Energy savings extended to the winter time as well. The LoĒ² house saved 10% on the heating bill when compared to the house with regular clear glass.
The stellar energy performance of Cardinal LoĒ² means that a smaller air conditioner can be used to cool the same space. Cardinal found that the combination of LoĒ² and a smaller air conditioning unit with an increased Seasonal Energy Efficiency Ratio (SEER) can save 35% annually on heating and cooling costs.
Currently, there are roughly a quarter of a million new homes built every year in California, Arizona, and Nevada. Based on the demonstrated savings produced by LoĒ² in Roseville, Cardinal projects that if all new windows in this region used low solar gain glass rather than clear, the energy savings would equal 1 billion kilowatt hours per year. The peak load savings equate to building one new 400 Megawatt power plant every year.*
What does this mean for the region in practical terms? Accumulated over 10 years of new home construction:
- Homeowners would save 5 billion dollars on their electric bills.
- Peak load savings would have the same effect as adding more than 5% to the existing total electrical generation capacity.
- Air pollution savings would equate to shutting down all power plants for the next 3 months.
While each homeowner will enjoy measurable savings in their energy bill, the cumulative effects mean cleaner air for everyone and increased reliability of electrical supplies into the future.
Using the measured temperatures from the Roseville test homes, the chart above shows how dramatic the improvement in comfort is with LoĒ². Even with direct sunlight shining in, the home with LoĒ² will feel more pleasant than the clear glass house with the shades drawn. To develop a comparable comfort level in the clear glass house, the homeowner would have to lower the cooling thermostat setting by 4°F or more. Set for equal comfort, the energy analyses show that the measured savings of 25% for LoĒ² would now increase to nearly 40%!
Cardinal LoĒ² offers energy savings, pollution reduction, and improved comfort when compared to ordinary clear 2-pane glass. Cardinal’s Roseville project is the proof.
Notes: Get a PDF copy of the Roseville Project brochure.
*Estimated peak load reduction of one kW per house. Assumes window replacement in existing homes at 80% of new home start rate. Estimated energy savings of 2,200 kWh per house per year. Regional electrical generation capacity and air emission analysis comes from E-GRID 2000 database.