As the temperatures begin to drop, it's time to ensure that your furnace is in good working order. A properly functioning furnace keeps you and your family cozy and warm amidst the chill. However, if your furnace is making strange noises, it might indicate that it needs some repairs. Some of these furnace noises can be alarming, and others might be subtle, but nevertheless, you should pay close attention to them. Here are some of the common furnace sounds that might require repairs.

High-pitched Whistling or Whining Noise

If your furnace is producing a high-pitched whistling or whining sound, it could be an indication of a malfunctioning blower motor or motor belt. A loose belt or worn-out bearings on the blower motor can cause it to work harder, resulting in a whistling or whining sound. The noise will only get worse if you don't repair it promptly.

Booming or Banging Sound

A loud booming or banging noise coming from your furnace could indicate that there is a problem with the furnace's ignition. It could be that the burners have become clogged, and when they finally ignite, it creates a loud sound. Alternatively, the heat exchanger might have a crack, causing a gas build-up and a loud bang when the furnace ignites.

Scraping or Grinding Sound

A scraping or grinding sound from your furnace could mean that the blower wheel is malfunctioning. Over time, the wheel accumulates dirt and dust, causing it to unbalance. This balance issue will cause the motor to work harder, resulting in a grinding or scraping sound. Ignoring this noise can lead to an eventual breakdown of the furnace.

Rattling Sound

If the rattling sound comes from the furnace itself, it could be an indication that there is an object inside the furnace. It may be challenging to pinpoint the exact location of the sound. Get an expert to inspect your furnace and remove the item if found. Ignoring a rattling sound can lead to serious damage to your furnace.

Whirring Sound

A whirring sound from your furnace could mean that there is a problem with the blower's fan blade. The fan blade might be bent, or the motor's bearings might be worn out, causing the whirring sound. Delaying repair could cause the fan blade to fly off, posing a safety hazard.

Strange noises from your furnace might indicate an underlying issue that needs prompt repairs. Contact a professional for more information about furnace repair.