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alester2 · Jan 15, 2012, 05:25 PM

I have an old heating/air conditioning unit. I don't know how old the unit is nor what the name of the unit manufacturer is. The Model #: 48 HWC18 and the Serial #: AB27H37829. I believe the company who originally made the furnace was the Johnson Corp. Of Bellevue, OH.

I need a blower motor for my furnace. It will not blow out the hot air when the thermostat is set on "auto." The heat output is very weak on this setting. When set on "fan" the heat is blown out adequately but when the furnace cuts off, the fan continues to blow but the air is much cooler. Please, anyone advise. Thank you.

*** contact info in violation of site rules have been edited out**

namylcul336 · Jan 19, 2012, 11:22 PM

Is it dual or single fan unit? If dual you need a new motor, if single it could be as simple as a bad thermostat. Call your local heat and air guy for test should only be charged for service call to answer this question. Good luck

alester2 · Jan 20, 2012, 06:52 AM

Hi and thanks for your response to "looking for parts." The blower motor is a dual motor (heating/cooling unit)
It is a very old furnace. Do you know where I can find a replacement? The specs are: Model: 48 HWC18, Serial#: AB27H37829. Company: Johnson Corporation out of Bellevue, OH.

The furnace is working but it takes a long time to come back on after it shuts itself off running in "auto" mode.
Please advise. Thank you.

Mr Asa Lester

alester2 · Jan 20, 2012, 06:59 AM

Thanks for your response. The blower motor is a dual (heating/cooling unit). Do you know where I can find one for this old furnace? Once again, the specs: Model#: 48 HWC18, Serial#: AB27H37829. The company: Johnson Corp. From Bellevue, OH. Thank you.

Fr_Chuck · Jan 20, 2012, 09:02 AM

Please do not start a new question to add more info, it does not work that way, these are not "blogs" You will need to actually "answer" your own question to add more info to it. I have merged your posts.

mygirlsdad77 · Jan 20, 2012, 04:55 PM

You first need to determine if the motor is the problem. Check the capacitor, and check to see if you are getting correct voltage to the motor (should be roughly 120v when blower is running. If correct voltage, and cap is good then you most likely do need a new motor.

Your best bet in this case will be to take the old motor to a local hvac company or eletrical shop, and have them find you a universal replacement motor that meets the specs of the old motor. Make sure to get a new correctly sized capacitor to match the new motor.