28 Jan '12, 1pm

If you're looking for a great source of professional energy efficiency articles, the Green Building Advisor site...

If you're looking for a great source of professional energy efficiency articles, the Green Building Advisor site...

If you can only afford one step, replacing an aging heating appliance may be the best investment. According to Pettit, "An old furnace or boiler is often the worst energy user in an old house. Many houses built prior to 1920 still have old coal-fired boilers that were converted to gas or oil. These units are workhorses, but use a lot of energy. A new furnace or boiler can save energy dollars right away. Replacing window air conditioners with a central system also can save energy right away, as long as the ductwork has been placed in the conditioned space Insulated, air-sealed part of a building that is actively heated and/or cooled for occupant comfort.

Full article: http://www.greenbuildingadvisor.com/blogs/dept/guest-blog...

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