TechShield® And Time-of-Use Plans
In a 5,000 square foot home with three, zoned, 13-SEER heat pumps the highest electric bill of the year barely exceeded $313 for an August in the Phoenix metropolitan area. How is that possible? One of the strategies used at Woodridge Custom Builders, LLC to increase energy efficiency in the homes we build includes using TechShield® Radiant Heat Barrier.
TechShield® Radiant Barrier Sheathing is manufactured by the Louisiana-Pacific Corporation and represents the best in energy-efficient building technology. TechShield is a thin aluminum foil barrier installed on roof sheathing materials. With TechShield® on the roof deck, attics stay cooler, cooling loads are reduced, and energy consumption goes down. TechShield® radiant barrier sheathing is an energy saving upgrade that consumers at Woodridge Custom Builders, LLC are willing to pay for. With its thin, laminated, aluminum layer, TechShield® prevents up to 97% of the radiant heat in the panel from radiating into the attic – passing on to the homeowners energy savings of up to 20%, and usually around 17% according to the manufacturer’s website, www.Lpcorp.com.
In summer when radiant heat is the most intense, the sun’s rays penetrate the roof and walls of a house, but the TechShield® radiant barrier blocks this heat from penetrating the home into attic spaces. Conversely, when temperatures cool off in the winter months, the radiant barrier prevents indoor heated air from escaping through the attic spaces and reflects it back into the house. The house stays cooler in the summer and warmer in the winter.
In addition to the TechShield®, these homeowners used Phoenix-based Salt River Project’s (SRP) Time-of- Use-Plan. This plan rewards consumers for using less electricity during peak times. Consumers use programmable thermostats to set lower temperatures in the house when electricity is cheap. During peak usage times, thermostats are programmed to a much higher temperature. If the house is cooled sufficiently when electricity is cheaper, the air-conditioning units need to run very little during the daily peak periods. The peak times change for winter and summer. By cooling the home when energy is off-peak it costs approximately 25% per kilowatt than during on-peak times. One-quarter as much per kilowatt than during on-peak times may be enough to try the plan in the Phoenix metropolitan area, other utility companies through-out the nation have similar plans.