Today’s gas furnaces are safer than ever, with advanced features and settings that won’t allow for electrical danger, gas leaks, or fire hazards as long as the unit is properly installed and maintained by professional gas furnace service technicians. The technology used in furnaces has been around for a long time, but installation once came along with a lot of stress for homeowners looking to protect their homes and families. Of course, the design improved over time, and today’s models contain key safety components and devices so that you can have some peace of mind about your home comfort system.
One benefit of modern furnaces is that they do not have a standing pilot. This means that a pilot light does not need to stay on at all times; it only needs to be on for the length of time that the heating cycle must run to heat the entire space. This is an improvement for efficiency and because a pilot light that is left on at all times can increase the risk of danger. Three of the other innovations that make modern furnaces so safe are described below.
- Fan and Limit Switch: Sometimes, the fan switch and the limit switch in a furnace are separated while other times the two switches come packaged as one. In any case, the fan switch controls when the blower motor turns on and off, while the limit switch keeps the furnace from overheating. When the temperature in the plenum that connects the air handler to the ducts becomes too high, the gas valve is shut.
- Flame Detector: The flame sensor is a probe that simply detects whether or not there is a flame. When there is no flame present, gas can leak into the home, but the sensor instead sends a signal to the control board to activate a safety lockout that prevents gas from flowing.
- Air Pressure Switch: The air pressure switch ensures gas is venting properly via the draft inducer. The draft inducer is meant to assist combustion gases in safely venting away from the home, but if airflow becomes reduced for any reason, the air pressure switch shuts off the gas.
The heating professionals at Air Conditioning Experts, Inc. offer thorough gas furnace service in Duluth, GA for installation, repair, and maintenance, and can answer all of your questions about furnace safety. Give us a call!