What a Flame Sensor Is and Why It Matters
Scheduling your annual furnace maintenance helps keep your heating system operating up to 30% more efficient and helps extend the life of the equipment. But things could still go wrong, and when they do, you may feel like you’re always hearing about something else.
This time it’s your heat exchanger, next time it’s your control board. Now you need to replace your flame sensor.
What is a flame sensor, anyway?
A flame sensor is an important safety feature on your gas furnace. During the ignition cycle, your gas furnace goes through a process where either a spark or a hot surface igniter actually ignites the gas. When the gas is ignited, the flame sensor creates a current of electricity. This is measured in micro amps. If the furnace’s control board does not read the correct level of micro amps, the furnace will stop giving the system fuel to prevent an explosion.
Over time, if the flame sensor is not cleaned properly, oxidation or carbon buildup can interfere with the flame sensor’s ability to function properly, which can cause the furnace to malfunction.
The way to determine if a dirty flame sensor is to blame for a furnace malfunction is to take a micro amp draw reading, which an expert furnace technician can provide you. If a dirty flame sensor is the culprit, the technician will clean the sensor with steel wool. If dirt was the only factor, we will see a much higher amp reading. If the reading does not change, the technician will proceed with the furnace repair diagnostic process.
If you aren’t sure your furnace is going to make it through these last few weeks of winter, give Service Experts Heating, Air Conditioning & Plumbing a call and we’ll come out and provide you with a full furnace maintenance or a free in-home estimate on a new heating system.
Zoning Systems: Customized Comfort in Every Room
Central heating and air conditioning systems have revolutionized home comfort and made it possible to stay perfectly comfortable in any season or climate. But while centralized systems are a convenient way to control the temperature, they sometimes fall short when it comes to evenly distributing... Continue reading
Eight Common Heating Myths Debunked
There are plenty of myths out there about home heating that lead to confusion and inefficient furnace operation. It’s time to set the record straight. Here, the heating specialists at Service Experts Heating, Air Conditioning & Plumbing debunk the eight most common myths to keep your home... Continue reading
Eight Ways to Upgrade Your HVAC System
During the coldest time of the year in the U.S., there’s no better way to enhance your home’s comfort than with a few effective upgrades. It’s not just about keeping the house toasty warm as the snow begins to fall—it’s about enhancing efficiency and improving the very air you breathe.... Continue reading