Many expensive HVAC problems start as small, inexpensive issues that grow over time. The best way to avoid a breakdown is to have your system inspected, cleaned and tuned up at least once a year. A trained, licensed technician can catch small problems before they become big repairs.

But you can also prolong the life and improve the efficiency of your system by doing a few simple things yourself throughout the year:

1. Buy a high-efficiency air filter
2. Keep AC and heat units free of leaves, grass and pollen
3. Clear two feet of space around outdoor and indoor units

1. Inspect insulation on refrigerant lines every 30 days
2. Replace air filters every 90 days
3. In the summer, turn off water to the humidifier
4. In the fall, replace the humidifier pad and turn on the water

1. Replace your carbon monoxide detector battery
2. Ensure outdoor AC unit is on firm and level ground
3. Clear condensate drain with bleach/water mixture
4. Inspect and, if necessary, caulk around doors and windows to keep hot/cold weather outside
5. Make sure all doors and windows open