If your gas furnace falters or fails, a few simple procedures may save you the cost and trouble of seeking professional help:
- If you’re getting low airflow, check the air filter on the furnace; a clogged filter could cut airflow to a trickle.
- See if there are loose wires or a malfunction in the thermostat. For an electronic thermostat that runs on batteries, try changing them.
- Are fuses burned out or circuit breakers tripped? If so, power may have been cut to the fan or circuit board.
- If those steps don’t work, call a heating contractor a Air Done Right. Despite the improved efficiency of most new furnaces, it’s generally more cost-effective to repair a furnace than to replace it. However, if a key component such as the heat exchanger or control module fails, you’re probably better off replacing the furnace, especially if the unit is more than about 15 years old (furnaces typically last an average of 15 to 18 years).