By Cameron Huddleston, Former Online Editor August 25, 2009 My daughter declared the other day, when the temperature dipped into the sixties, that it smelled like fall. The cold spell didn't last long, though, and it's nearly 90 degrees today. But that doesn't mean you shouldn't start looking ahead to colder weather and upgrades you could make to your home's heating system that could score you tax breaks and save you money down the road.You can get tax credits for installing biomass stoves, geothermal heat pumps, and energy-efficient doors, windows, insulation, and heating and cooling equipment this year or in 2010, thanks to the economic-stimulus plan President Obama signed in the spring. Adding to the incentives previously offered by Uncle Sam, you now have eight great ways to tap the Treasury and make your personal economy greener. See our slide show to learn how.