What’s that noise?
Boom! Clank! Creak! Is your furnace making funny noises? There are a few noises associated with operation that are completely normal, but there are others that can be the first indication that something is seriously wrong with your HVAC system.
If you hear one of the following noises, turn off your equipment immediately and get in touch with your local heating and cooling contractor.
Loud clicking. This can be very problematic. It can indicate that your ignition system has failed. Your unit should automatically shut off, but monitor the situation to make sure.
Squealing. This can mean that a component in your unit, like your blower, is loose or malfunctioning.
Metal rubbing metal. This may indicate that a component has come loose and is scraping against another component!
Rattling. This can alert you to loose ductwork or another loose component in your furnace (depending on where the noise is coming from).
Pops and bangs. If it is coming from your ductwork, this may be normal. Temperature changes in your ductwork can cause it to expand and contract, resulting in the popping noises. However, if it is coming from your furnace, this can indicate a failed or dirty component.
Scratching or buzzing. No one wants to think that there may be things lurking in their ductwork. But, if you hear scratching or buzzing, it could mean that an animal or insect has made their home in your air distribution system.
Remember, these noises can mean that there is a MAJOR problem with your heating system. If the sound you hear persists, turn off your equipment and give your local professional a call. DIY maintenance and repairs are NEVER encouraged. DIY solutions can create major problems that affect system performance. Not to mention, it can be dangerous.