A combination of insulation improvements, air sealing, and winterization projects will help ensure your heating system is efficient and long-lasting. The worse your home's insulation, the harder your heating and cooling system will have to work.
The flames from the burner component heat a metal heat exchanger. The heat circulates through the looped tubes of the heat exchanger, transferring the heat to air.
How is Furnace Energy Efficiency Measured?
You may also have an issue with your thermocouple or thermopile, which helps detect whether your pilot light is on or not. Your thermocouple is an essential safety device that makes sure your gas valve is not sending gas into a furnace without a working pilot light.