Consider materials made from natural sources such as linoleum, cork, and cellulose insulation. Buy energy efficient appliances and mechanical systems, maximize insulation and ventilation opportunities, and incorporate renewable energy resources where feasible. An energy-efficient house is more comfortable and economical to live in, not to mention better for the environment. Before buying a new furnace, have an energy audit conducted to check for leaks and additional insulation needs. Local utilities usually conduct this service for a nominal fee.
Proper insulation can reduce the required size of the furnace or air conditioner.
The higher purchase price of these furnaces is offset by energy savings over time. Solar heating opportunities should be emphasized. For instance, take advantage of the sun by maximizing window exposure on south side of the house. Awnings, overhangs and trees can provide shade in the summer and block unwanted heat gain. Select Energy Star rated appliances.