If you have an old thermostat that isn't programmable, turn off your furnace circuit breaker, carefully disconnect the thermostat from your wall, and throw it out. Programmable thermostats can be found for under $25, are commonly found in home ... Some 6 inch and 8 inch diameter sheet-metal ductwork can be replaced with insulated flexible ducting that costs less than $40 for 25 feet at a home center. If you use this, be sure to attach it so that it is snug with the supply ...
Do It Yourself Energy Efficiency Projects: Your Home's Thermal ...
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