The Seattle Times

David H. Brow / The Lowell Sun, AP
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Tuesday, April 8, 2014

Everything adds up in high-efficiency cottage

David Posluszny stands in his insulated house he engineered in Shirley, Mass. The home has no furnace, yet is warm even on the coldest days. The walls are stuffed with insulation a foot thick help keep heat from appliances and electronics from escaping.