While it’s normal for mechanical devices to make some sort of noise while they’re in operation, there are some noises you don’t want to ignore. Even though it’s possible to get used to the unusual noises and believe that they’re normal, you still may need to take action. Below are a few reasons why your Fairdale, KY, furnace is banging, as well as a couple of other sounds you shouldn’t ignore.
If you hear a banging noise when your furnace kicks on, you may have an issue with the ignition. The gas valve opens when the thermostat signals the furnace to start, which should ignite the gas immediately. A problem with the ignition system causes gas to build up in the combustion chamber until the gas does ignite.
Ductwork Expansion and Contraction
Your ductwork could be the source of the banging noises rather than your furnace. The metal in your ductwork expands when heated and contracts when it cools down between furnace cycles. It can be normal for your ducts to make a booming or banging noise, but you can bring this up at your scheduled maintenance appointment if it becomes bothersome.
Sometimes, when you hear a banging or popping sound as your furnace begins a cycle, it’s due to dirty burners. This is a problem as gas accumulation can crack your heat exchanger, necessitating repairs.
Rumbling noises are another cause for concern as this means that fuel continues to burn in the combustion chamber even with the burners shut down. This increases the risk of carbon monoxide poisoning, which is a threat to indoor air quality.
Grinding or Scraping Noises
Hearing a grinding or scraping noise is usually a sign of having dry bearings in your furnace blower motor. The bearing requires regular lubrication by a professional technician.
If you hear unusual sounds coming from your furnace, don’t delay. Contact us at Elder Heating and Air today for all your furnace repair and installation needs in Fairdale, KY, and the surrounding areas.