This is the start of a series on money saving ideas for your home. The tips are for the DYI person to save money on there monthly energy bills and home maintaince. Just a few inexpensive fix's can save a lot of money on your bottom line. 1- Replace heating and cooling air filters on a regular basis. Dirty filter can lower the efficiency of the heating and cooling system, which will increase the cost of heating and cooling your home. This one is a no brainer, try to run with a repertory mask on... you can't take in the same amount of air and you overheat. Changing the filters at least twice a year is acceptable, if you have in door animals every 3 months.