A lot of homeowners are surprised at their new trane furnace noise (especially single stage) because new blowers are designed to move more air. These noises can be very annoying especially when you are trying to sleep or just reading in the living room. The common trane furnace problems can be fixed easily and this guide will show you how you can fix the trane furnace noise.
First, you need to know what are the different types of noise coming from your trane furnace. Then depending on the noise, you can take further actions to mitigate the noise once and for all.
Where Did That Trane Furnace Noise Come From?
All new furnaces have more moving parts then the older furnaces had. They make sounds that the older gas furnaces did not make. If you are referring to the sound of the induced draft blower that comes on just before your furnace fires up, that is a factor of all new furnaces.
If your noise issue is from the air through the ducting, that is most likely due to the installers not properly sizign your system.
Here are some of the reasons your trane furnace could be making a loud noise.
Over time, the bearings in the blower motor wear out, causing the motor to become noisy. Some furnace motors can be lubricated—if your furnace motor can be lubricated, try lubricating it first. If lubricating the motor doesn’t solve the problem, or if your motor can’t be lubricated, replace the motor.
Draft Inducer Motor
The draft inducer motor draws air into the burner and then exhausts it out the flue. If the motor bearings are worn out, the motor will be loud. If the draft inducer motor is unusually noisy, replace it.
The blower wheel blows air out of the furnace and through the house. The blower wheel is attached to the blower motor shaft with a set screw. If the set screw is loose, the blower wheel will wobble on the motor shaft, and the wheel will be noisy as it turns. Check the set screw to ensure that it is properly tightened. Next, inspect the wheel for damage. If the blower wheel is damaged, replace it.
Draft Inducer Blower Wheel
The draft inducer blower wheel blows air through the burner system. Inspect the blower wheel for damage (such as a separated center hub or broken fins). If the blower wheel is damaged, replace it.
Common Trane Furnace Noise and their Causes
There are several trane furnace noises listed below, some of which could indicate a problem with the unit.
- Screech – This could be a problem with your motor or fan belt.
- Chirp – Chirping sounds are fairly common with furnaces and usually the natural noise of the mechanisms.
- Rattle – Rattling noises typically happen when the system is cooling down and is not usually cause for alarm.
- Boom – When the weather outside warms up or cools down, the ductwork in your house expands and contracts. If this happens and your furnace smells like it’s burning, you might have a dirty burner in your furnace or a defective gas valve.
- Ping – This sound can also be caused by contracting and expanding ducts.
- Hum – When the furnace burner lights, it may cause a humming sound.
- Whine – Whining or odd vibrating noise may indicate a problem with your furnace.
- Crackle – Crackling noises may be the metal parts cooling down after the furnace shuts off.
- Clunk – Clunking or bumping sounds often means you have a cracked belt.
The best way to determine whether your furnace is making an odd sound is to learn what it sounds like during normal operation. If you notice a significant trane furnace noise, call your local Trane dealer to schedule an inspection.