Saving money with better furnace filters?
I was watching an energy savings sequence on tv where a Home Depot guy was touting ways to save energy/money. All look familiar and believable except one: replace the cheap fiber glass (usually blue in color in my experience) air filter with a more expensive pleated filter and save $120 per year. He didn't say how that savings would accrue, but he said nothing that the savings might be do the money saved on having the heat exchanger professionally cleaned, say. Can one expect to expect to save this kind of money (both ac and heat) by having a more effective/efficient air filter? If yes, I'll pay the extra money for better filters.