Energy Efficiency

Advanced Framing/Extra Insulation
Advanced framing is a technique used by builders help reduce construction costs and increase energy savings. On average, advanced framing uses 30% less lumber, takes less time to construct, and costs less to build because the reduced use of lumber more than offsets the additional cost of extra insulation. Construction cost savings is estimated at $0.29 per square foot of wall area. Total savings for this measure alone are 2 to 4% of total energy use.

High Efficiency Water Heater
Locating the hot water heater near the point of highest use will minimize pipeline energy loss. Typically, the point of highest demand is the shower. Another strategy designed to increase efficiency is to insulate hot and cold water pipes within 3 feet of the hot water heater. This measure reduces standby heat loss from the water tank. The tank continuously heats the piping and the water in it even when no water is being used. The pipes act as "cooling rods." Insulating them reduces the rate of heat loss. In addition, choosing a high efficiency water heater can save energy and water.

Efficient Household Appliances
Built Green homes feature appliances that are as energy efficient as possible. The reduced costs associated with operating energy efficient appliances offset any higher initial costs of purchasing the appliances. Builders are encouraged to use appliances that have "Energy Guide" or "Energy Star" labels to insure that they meet energy efficient criteria.

Air Sealing
Advanced caulking is part of the airtight approach for framed structures, which is an advanced sealing package that goes beyond basic practice. Caulk is used on interior walls at intersections with exterior ceilings. Caulk or gasket drywall is used at electrical, plumbing or mechanical penetrations in the drywall. Minimal expanding foam is use where the subfloor and walls meet, around windows and doors, all penetrations in the in wall plates between floors and exterior. Foam is also used behind electrical boxes on exterior wall to stop drafts. All exterior penetrations are caulked and paint for weather resistance. Air leakage in the HVAC system can reduce the efficiency of the system, so the duct work throughout the house is sealed as well with mastic or caulking so not to lose any air flow. The air returning to the furnace is run through ducts vs. using framing cavities as returns, this reduces air loss and improves air quality.