There are several reasons why you might experience an extra noisy furnace. To find out which one of the following is true for your home, call for a furnace service appointment or fill out the request service form. This is a diagnostic service call, not a maintenance issue.
Heating equipment and ductwork make noise as they heat and cool, and as the heat comes on and off. A boom, rattle, hum or fan noise is common. But more significant noise complaints about furnaces can indicate other issues:
• If your furnace is inside the house, it may be located in an area that is magnifying the sound it makes – such as under a staircase. Often moving the furnace to another part of the house can reduce that noise. You may find that it’s in an area that was previously occupied by another older type of furnace, and you never heard those sounds from that one. Please keep in mind that modern furnaces are built differently – with multiple speeds and stages – which may create different sounds and require more airflow than your old ductwork has available. If the furnace doesn’t get enough air, it gets cranky.
• Furnace is making more noise because it’s turning on and off more frequently. It may need repair, may not have been sized properly to fit the needs of your house, or may not have the airflow available that it needs from the ducts. The ducts are most often the culprit. Sometimes adding a cold air return can solve this. Ensure your vents are all open. If you are closing off vents in your house this can contribute to the issue.
• Furnace just started making noise after running quietly for years. This is a sign of an aging furnace or a potential mechanical problem. If you also smell a burnt odor, please call for service.
• Furnace is humming loudly and it didn’t use to. The vibrations in the furnace may have jogged something loose (a screw perhaps), which is vibrating. It may also be an early indicator of a problem with the motor.
• Ductwork is also part of your heating system and the humming or rattling noises can come from a loose duct. Ducts can be reinforced and made tighter to reduce vibration noise.
If furnace noise is bothering you, call for a service appointment today.