What to Do if Your Furnace Starts Making Strange Noises
Strange noises coming from your furnace are often more than just a nuisance. Unfamiliar or loud noises usually indicate that something is wrong and ignoring these noises may lead to bigger problems. With proper early intervention and professional furnace repair in Sacramento you can prevent inefficient heating, leaks, and breakdowns. Read on to learn about some of the most common furnace noises, possible causes, and how to address them safely.
Squealing or Whining Noises
Squealing or whining noises often point to issues with the blower motor or the belt that drives it. Over time, belts can wear out or become misaligned, causing a high-pitched noise. Similarly, the motor itself may need lubrication or be malfunctioning.
What to Do
Turn off the furnace and inspect the blower motor belt for signs of wear or misalignment. If you have the proper lubricant and tools, lubricate the motor, or call your HVAC repair team to do so. If the noise persists, contact a technician to assess whether the system needs repair or replacement.
Rattling Sounds
Loose panels or internal components may cause rattling noises inside your furnace. In serious cases, this indicates internal breakage or cracks in the heat exchanger. This could lead to carbon monoxide leaks which threaten the safety of your indoor air quality and should be professionally handled as soon as possible.
What to Do
Turn off the furnace and check for any loose screws or panels that may need tightening. If rattling continues, contact a professional right away to inspect your furnace.
Scraping Metal Sounds
Scraping or grinding noises happen when metal parts in your furnace come into contact with each other. This could indicate that the blower wheel is loose or has shifted out of alignment. Another possibility is that the motor bearings have worn down, leading to friction between moving parts. There are many external factors affecting the lifespan of your HVAC unit that can cause this wear over time.
What to Do
Turn off the furnace immediately to prevent further damage and call an HVAC technician to diagnose the issue.
Banging or Popping Sounds
Banging or popping sounds could indicate a delayed ignition, especially if the noise happens upon starting up. If the ignition is delayed, gas builds up more than it should causing a large sound when the ignition finally works. Expanding or contracting ducts may also make similar noises as they adjust to temperature changes.
What to Do
In either case, whether due to delayed ignition or fluctuating ducts, professional assistance is required to handle to problem safely. Especially in the case of gas build-ups from ignition delay, it may be dangerous to attempt repairs on your own. With the help of a professional you can prepare your HVAC system for winter.
Get Furnace Noises Inspected Fast! – South Placer Heating and Air
If your furnace is making unusual sounds and you need expert help, contact South Placer Heating and Air today or give us a call at 916-246-2089. Our experienced team can quickly diagnose and fix your furnace issues to keep your home warm and safe.
