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Dale McCormick, left, director if the Maine State Housing Authority, and Matt Holden, president of Investment Engineering, discuss on Tuesday the highly efficient boilers, background, installed at the River Valley Village housing complex in Lewiston. The boilers were one step that The Caleb Foundation, owner of the complex, has taken to make the low-cost housing more affordable through energy efficiency. The foundation had installed solar panels, low flow shower heads, faucets and toilets and thermostats that cap unit temperatures at 76 degrees Fahrenheit. They also doubled the insulation in attics, caulked windows, and added weather stripping to doors. The upgrades cost the foundation $2.1 million, but are expected to create a savings of up to 30 percent in fuel costs and up to 50 percent in annual water and sewer costs according to a press release from the foundation.
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