After an HVAC professional services the furnace, there are a few steps homeowners can take to keep it running smoothly. Most importantly, perhaps, is changing the air filter regularly, at least every three months, according to Energy Star, which is a branch of the U.S. Environmental Protection Agency. A clogged air filter will restrict air flow, which can also negatively affect your health through exposure to environmental contaminates.
Another energy savings tip, HVAC professionals say, is using a programmable thermostat. A programmable thermostat can save you up to 10 percent on energy bills, if you dial it down seven or eight degrees from the normal temperature setting — the U.S. Department of Energy recommends a setting of 68 degrees — for eight hours a day, whether it’s during the work day or at night, according to DOE.