At the beginning of a heating cycle, the blower motor distributes warm air into the air ducts in your house. If you notice a loud popping noise when your furnace is activated, the source of this problem is inflation in your air ducts.
How do you fix a noisy furnace blower?
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Why is my furnace blower motor so loud?
Your blower motor forces the warm air out of your furnace and through the air ducts in your home. The blower motor needs routine lubrication, and often a specific kind of lubrication to upkeep performance and function over time. Otherwise, the fan might seize up and cause a loud noise (and an even louder repair bill).
Why does my furnace make a loud noise when it turns on?
Your ductwork expands and contracts during your furnace’s heating cycles. This can sometimes create booming or banging sounds when your air handler turns on and the pressure changes inside of your ducts.
Why is the blower motor making noise?
Squealing and screeching sounds are usually due to an issue with the blower motor. The motor has bearings that are prone to drying over time. Motor bearing issues can usually be resolved by adding lubricant.
Why does my furnace sound like an airplane?
Furnace Sounds Like a Jet Engine
If your furnace sounds like an airplane or jet engine taking off, it’s usually a gas issue. Gas could be leaking from a line or valve. Or, if you hear a click before the swooshing sound, you may have a broken heat exchanger that is leaking gas.
Why does my furnace sound like a freight train?
“Train” noise coming out of furnace:
If too many vents are closed or covered up in your home, is one culprit for this.
What does a bad blower motor in furnace sound like?
A thumping, banging or clanking sound could be the result of a loose or broken off part in the motor or blower assembly. Should you hear one of these noises, turn off your furnace immediately. Call a professional to examine and repair or replace the broken part before you turn your furnace on again.
What does a failing blower motor sound like?
A defective blower motor will make a continuous sound noticeable by the passengers in the vehicle. It can manifest as a knocking, whirring, clunking, vibrating, squealing, or whining noise that persists until the blower motor is replaced.
How do you lubricate a blower motor on a furnace?
Apply two or three drops of 10-weight nondetergent motor oil (not all-purpose oil) to each port. Do not overlubricate. If the blower shaft has oil ports, it, too, should be lubricated annually, following the same procedure. You’ll probably have to remove an access plate to get at the ports.
When should I worry about my furnace noise?
In most cases, it is wise to call a service technician. A pinging or popping sound is most likely coming from one of the ducts and is not really something to worry about. If you hear an odd vibrating noise or whining, it may indicate a problem with your furnace and a technician really needs to check it out.
Why is my furnace making a loud humming noise?
Noise #4: Humming or buzzing
But if you hear a loud humming or buzzing sound coming from your furnace, it usually means your furnace has an electrical problem. The most common electrical issues that cause a humming or buzzing sound include: A failing blower motor capacitor. An aging or unlubricated blower motor.
Why does my furnace sound like a helicopter?
It is a damaged valve, fan, belt, rod, thermostat, or crankshaft if you hear a clicking noise. Furthermore, a helicopter, buzzing, or rattling noise means a refrigerant leak, which is destructive for your HVAC system.
Why does my furnace sound like a jackhammer?
Once the burners are finally able to ignite, there is a larger volume of gas present, so the banging noise you hear is the sound of this gas finally igniting. If you believe your furnace suffers from dirty burners and delayed ignition, call for furnace repair right away.
How do I stop my furnace duct from making noise?
Here are two ways to solve the problem:
- Seal and insulate your ducts. Wrapping your ducts in insulation should solve your “cold winter morning” heating duct popping noise. …
- Replace your ducts. Replacing your ducts is usually more cost effective than insulating them.
Why is my air return so loud?
When it comes to air returns making funky noises, though, there are usually a few common culprits: Dirty air filters and/or air ducts: Typically, air returns are covered with vents or grills. Since the air return sucks air, they are prone to getting clogged, especially if your home is particularly dusty.
