Gas furnaces aren’t known for being quiet. If yours is making a noise that the blower fan doesn’t normally produce, stop using it until a professional gets to the bottom of the problem. You’ll need to turn it off, since letting a faulty furnace run can further damage its mechanical components.
What’s causing the noise? There’s no telling for sure what it is until a home furnace repair expert like Cooper Brothers digs deeper. However, here are the usual causes:
A problematic blower wheel. If you hear a scraping sound, a loose blower wheel is probably to blame. The racket originates from the friction between this component and its housing. When it’s unbalanced, you can hear loud thumps. But when the blower wheel is damaged, you’re likely to notice a banging, squealing or scratching sound instead.
A compromised motor mount. When it comes to rattling noises, most experienced furnace and AC repair technicians suspect a broken mount first. When this component fails, it causes the blower wheel to drop and hit its housing.
A loose fan belt. High-pitched squealing is your furnace’s fan belt crying for help. This is its way of telling you that it needs to be tightened or lubricated.
A bad burner. Cooper Brothers agrees that constant low rumbling is indicative of a faulty burner. Don’t use your heating unit until a technician investigates the problem.
A trapped piece of debris. If it sounds like something is stuck in your furnace’s fan, it’s probably because something is. The debris needs to be removed from your heating equipment before it causes more headaches.
An electrical issue. Lingering clicks aren’t music to anyone’s ears because they signal an electrical problem. If you don’t address it ASAP, it can necessitate a premature furnace replacement.
Stop speculating what’s behind your noisy furnace. Instead, reach out to Cooper Brothers for them to give your HVAC system a thorough checkup and uncover the problem. Call us at (408) 659-8879 now to arrange an appointment at the most convenient date and time for you. We serve people in San Jose, CA, and nearby communities.