Ask Experts Questions for FREE Help !
Ask
    menauhant's Avatar
    menauhant Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Mar 13, 2010, 07:21 AM
    Play in combustion air blower wheel is noisy
    I have a 30+ year old hot air furnace that has developed a noise coming from the wheel on the air blower. There is play in the wheel, but I don't know how much play is normal. The motor that runs the belt to the wheel is quiet and has had no adjustments since installed 10 years ago. The belt is dry on the outside but not brittle or dry on the side that rotates the wheel. The set screw that holds the wheel in place is tight. My question is how much play is normal, could it be the belt that is causing the noise from the wheel? Could it be dirt? I am positive the noise is from the wheel so any suggestions on trouble shooting it would be appreciated.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Mar 13, 2010, 02:17 PM
    Try a small bit of lube on the bearings if you can get to them. There is no published spec on shaft play that I know of listed by the HVAC manufactures.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Combustion Air Blower [ 3 Answers ]

Hello all, I have a Lennox furnace about 9 years old. It is model number c23-46-1. Just today the combustion motor is making a light squeaking noise at start up. It's a little more pronounced at start up then fades. I removed the unit and could not find any issue. Is it going bad? Can you...

Combustion air blower on my furnace is hot to touch is this normal [ 2 Answers ]

My combustion air blower on my furnace is hot to touch is this normal

My combustion air blower on my furnace is hot to touch is this normal [ 1 Answers ]

My combustion air blower is hot to touch on my furnace is this normal

Need to replace combustion air blower [ 2 Answers ]

Hi, I have a Comfort Air furnace. The "Fasco" combustion air blower is making a noise when starting up and running. I want to replace the whole unit. Does anyone know of a reputable online dealer to buy it from?

Combustion Air Blower makes noise. [ 3 Answers ]

Hi all, I have a 4 and 1/2 year old ComfortMaker furnace. The combustion air blower started making a rumbling noise while starting and stopping and continues to vibrate while running. I had a heating & cooling service look at it. $65 just to show up. Without taking anything apart he said...

View more questions Search