HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Ask an Expert,
Get an Answer ASAP!

Carrier Furnace Motor Blower Is Making High Pitched Noise.

Customer Question
My furnace blower motor has...

My furnace blower motor has developed a high pitch noise not quite a squeal but noticeable. I took the blower apart and the motor did not have any oil ports. So I used some 20W oil and placed a few drops where the shaft goes into the motor, on both sides. I put everything together and the noise is still there. The motor is Carrier part number HC45AE116A. GE #5KCP39PGN959BS.

Any ideas of what is going bad? And, how I can fix it without getting a new motor?

Submitted: 8 years ago.Category: HVAC
Show More
Show Less
Ask Your Own HVAC Question
Answered in 4 minutes by:
7/11/2010
HVAC Technician: gotoman for ac, HVAC Technician replied 8 years ago
gotoman for ac
gotoman for ac, HVAC Technician
Category: HVAC
Satisfied Customers: 5,357
Experience: 51 years of experience install design and repair of all makes and models of AC
Verified

gotoman for ac :

Mark. It is the blower wheel. This noise happens when blower wheel get a little loose from hub. Go to www.americanhvacparts.com Type model number and Carrier blower wheel top corner. Picture of blower wheels will come up.

Customer:

I can get to the blower wheels. And the noise seems to be coming from the right side. You are saying that the cage (say 11" diameter- the outside of the blower wheel) is getting loose from the wheel (10" in diameter) that is down the middle of the cage. Or, the wheel is coming loose from the hub (1.5" diameter) that slides onto the shaft having a set screw. Something else? The setscrew is tight.

gotoman for ac :

No the blower is coming loose where large area of inner wheel attaches to outer blades in middle. These are only a press fit and this happens quite often.

Customer:

Can I simply re-crimp the connections? Maybe use some glue like polyurethane is pretty tough stuff. Do you have another suggestion? The blower wheels are $100+ and I am pretty handy. I already pulled the whole thing apart and back together, and it still works!

gotoman for ac :

You can try it but it usually unbalances the wheel. Try it and if it does not work go to www.furnaceparts.com. They have the cheapest parts.

Customer:

Unbalancing the wheel means I may ruin the motor bearings right? Since there is no lube ports on the motor, does that mean it is a sealed ball bearing type bearing? I'll see what I can do to the crimped joints and update you on my success.

gotoman for ac :

Those usually leave bearings.

Customer:

It’s been a while but I finally got around to having to do something about this. The problem ended up being the motor. Apparently one of the sleeve bearings wore to the point where the stator started to rub the windings of the motor. The noise I heard was the beginnings of the two parts rubbing and eventually wearing through the windings. The windings shorted out to ground and the motor died. I replaced the motor and everything is now working.

Customer:

I also notice on the old motor that there was a small plug on the circumference of the end plate on the motor. My guess is the oil port of the motor's sleeve bearings. The new motor, the OEM replacement supplied by carrier, does not have the plugs. Is this typical?

Ask Your Own HVAC Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a hvac technicianLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask gotoman for ac Your Own Question
gotoman for ac
gotoman for ac
gotoman for ac, HVAC Technician
Category: HVAC
Satisfied Customers: 5,357
5,357 Satisfied Customers
Experience: 51 years of experience install design and repair of all makes and models of AC

gotoman for ac is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future.

JimmyBagley, IA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

Phil

Phil

Mechanical Engineer

7,634 satisfied customers

Retired HVAC/ Electrical & Boiler contractor. Industrial

Rick Mather

Rick Mather

HVAC Technician

3,133 satisfied customers

35 years experience, HVAC

Matthew

Matthew

HVAC Technician

2,014 satisfied customers

14 years experience in the HVAC field of service, installation, Manual J & D calculations

Brian HVAC Guy

Brian HVAC Guy

HVAC Technician

1,024 satisfied customers

I have been an HVAC/R mechanic/technician for 30+ years.

Kenton Guidry

Kenton Guidry

HVAC Technician

963 satisfied customers

12 years install/service experience.

Rick Ridley

Rick Ridley

UK Heating Engineer

871 satisfied customers

Retired But have had 30 years on the tools, Ex CORGI

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

< Previous | Next >

Related HVAC Questions
I have a charmglow fireplace model CGL250TE. The blower
i have a charmglow fireplace model CGL250TE. The blower motor is very loud. It is blowing, but very loud. Can you help me. Richard Willard telephone 1(###) ###-#### … read more
Webb-Guy
Webb-Guy
Maitenance Supervisor
Associate Degree
3,327 satisfied customers
I have a high efficentcy furnace and am wondering how to get
I have a high efficentcy furnace and am wondering how to get the fan off of the shaft on the power vent blower. the blower developed a very noisy vibration and when I took the blower apart I discouver… read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
I had bought 2 Eden Pure units about three years ago and used
I had bought 2 Eden Pure units about three years ago and used one of them for that length of time. I started the same unit up and it worked for one day and then would not turn on. I put it aside and t… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I have a Bryant 2 stage gas forced air HE furnace that is about
I have a Bryant 2 stage gas forced air HE furnace that is about 10 years old. Recently, immediately after the inducer motor starts, a very high pitched squeal noise comes from the inducer motor area a… read more
D.E. Anderson
D.E. Anderson
Industrial Refrigeration Service Manager
200 satisfied customers
We have 2 problems that 3 repairmen cannot seem to manage or
We have 2 problems that 3 repairmen cannot seem to manage or come to a consensus on what is the issue. I have a 15 yr old trane xe 80 gas furnace (with a Trane heat pump with dual zoned ducting). The … read more
type2technician
type2technician
253 satisfied customers
We have a Ducane AC10B20 unit that is from 1996. Its been
We have a Ducane AC10B20 unit that is from 1996. It's been making a high pitched squealing / metallic noise every once in a while (always in the evening, for what it's worth). Sunday night the unit st… read more
SWFLHVAC
SWFLHVAC
67 satisfied customers
I have a York window air conditioner about 2 years old. When
I have a York window air conditioner about 2 years old. When I put it on it makes a loud noise. Does the unit needs oiling; and if so where does it needs oiling and what kind of oil. I went to an air … read more
Wvfan79
Wvfan79
Mecanical Designer & Estimator
High School or GED
775 satisfied customers
I have a 7 year-old Carrier furnace, model 58MTA080F-112.
I have a 7 year-old Carrier furnace, model 58MTA080F-112. Occasionally it makes a high pitched squealing noise for about 7-10 seconds immediately after the thermostat clicks to turn the furnace on. Th… read more
HVAC_Doug
HVAC_Doug
Vocational, Technical or Trade Scho
I have a Plus 80 HighEfficiency Day and Night Gas Furnace that
I have a Plus 80 HighEfficiency Day and Night Gas Furnace that has a high pitched squeal shortly after it kicks on. I've had a repair guy come to take a look and he replaced a part (can't remember the… read more
mranswer
mranswer
TECHNICIAN
Bachelor's Degree
481 satisfied customers
Last summer moved into home with a gas furnace (Carrier Weathermaker
Last summer moved into home with a gas furnace (Carrier Weathermaker 8000 - about 11 years old). This is our 1st experience with a gas furnace and all the noises it makes. We had a licenced technician… read more
Tim H
Tim H
Lead building engineer
Vocational, Technical or Trade Scho
1,922 satisfied customers
Hello, I have a Model 58 PAV Upflow furnace that is approximately
Hello, I have a Model 58 PAV Upflow furnace that is approximately 10 years old. The past couple of days I have noticed a loud buzzing noise as soon as the furnace starts to kick in. I looked within th… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I have a Carrier Weathermaker 8000 VS gas furnace, Model 58UHV
I have a Carrier Weathermaker 8000 VS gas furnace, Model 58UHV 120-20. Installed about 5 years ago. A high-pitched squeal has developed when the furnace is running in the heating cycle (burning). The … read more
HVAC_Doug
HVAC_Doug
Vocational, Technical or Trade Scho
I have a hydro flame furnace system, I believe the motor is
I have a hydro flame furnace system, I believe the motor is a 8500-11 16, 20 BTU. My problem is when I turn it on it makes a high pitch screaching noise, this is from the beginning, long before the bu… read more
Tom
Tom
HVAC Technician
Vocational, Technical or Trade Scho
770 satisfied customers
I have a DC 90 tempstar in my home. a day ago it stopped blowing
I have a DC 90 tempstar in my home. a day ago it stopped blowing out warm air my wife turned the blower off then back on and it worked, but now there is a very loud noise coming from the blower… read more
gotoman for ac
gotoman for ac
HVAC Technician
Associate Degree
5,357 satisfied customers
I have a trane furnace. The furnace will ignite properly and
I have a trane furnace. The furnace will ignite properly and start blowing hot air into the house. After a few minutes, there is a high pitched whining noise. The gas shuts off, and the blower stops (… read more
gotoman for ac
gotoman for ac
HVAC Technician
Associate Degree
5,357 satisfied customers
We have a Trane xe90 and the fan just started squealing. it
We have a Trane xe90 and the fan just started squealing. it is still blowing out warm air but the noise is unbearbale. What can we do??? Update: We did WD-40 all over the fan and the squeaking has sto… read more
Tom
Tom
HVAC Technician
Vocational, Technical or Trade Scho
770 satisfied customers
The blower in my 19 yer old Lennox furnace is starting to squeal
The blower in my 19 yer old Lennox furnace is starting to squeal and occasionally stall and have difficulty restarting at the slow speed setting. Does not seem to have any problem (yet)at the high set… read more
KenCan
KenCan
Vocational, Technical or Trade Scho
111 satisfied customers
I have a heat pump that heats an outdoor swimming pool. I know
I have a heat pump that heats an outdoor swimming pool. I know these kind of applications are a bit rare, but I will continue. At the beginning of the season when I turned on my heat pump the fan woul… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x