Loud Bang Noise

 
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Old 10-31-2004, 09:27 PM   #1
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Loud Bang Noise


I have a furnace service with the loud bang noise.the customer said it happends one or twice a month. I couldn't find what causes this proplem.Please help me if you have this experience.Thank you.
 

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Old 10-31-2004, 10:41 PM   #2
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Re: Loud Bang Noise


Perhaps your customer has a family member who keeps hitting their head on the duct work in the basement.

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Old 10-31-2004, 11:02 PM   #3
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Re: Loud Bang Noise


I was thinking along the line of static pressure popping the ductwork but I like Grumpys answer better!
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Old 11-01-2004, 01:06 AM   #4
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Re: Loud Bang Noise


LOL I have a brother and a real good friend who are both in HVAC and I keep telling them they need to stop bye here but neither ever does

One thing's for sure... I know more about hvac than the average roofer!
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Old 11-01-2004, 05:45 AM   #5
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Re: Loud Bang Noise


Could be a delay in ignition?

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Old 11-06-2004, 12:53 PM   #6
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Re: Loud Bang Noise


Quote:
Originally Posted by helpme
I have a furnace service with the loud bang noise.the customer said it happends one or twice a month. I couldn't find what causes this proplem.Please help me if you have this experience.Thank you.
Where they are when they hear the noise can be helpful in determining what is "actually" causing the noise.

For instance, if they hear the noise in every room in the home equally... chances are that it is the ductwork itself popping.

However, if they hear the noise down near the furnace only... they could be hearing delayed ignition or even a blower engaging (if old belt-drive).
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Old 11-06-2004, 03:24 PM   #7
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Re: Loud Bang Noise


Mechanical Mind, Please read the advertising policy, I believe that you are selling software on that site.
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Old 11-07-2004, 07:29 AM   #8
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Re: Loud Bang Noise


Quote:
Originally Posted by Teetorbilt
Mechanical Mind, Please read the advertising policy, I believe that you are selling software on that site.
No Sir. I am not selling anything. That is just my homepage. Another place that I hang out. And I didn't put it in link format. Just text.

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Old 01-30-2005, 03:10 PM   #9
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Re: Loud Bang Noise


Quote:
Originally Posted by helpme
I have a furnace service with the loud bang noise.the customer said it happends one or twice a month. I couldn't find what causes this proplem.Please help me if you have this experience.Thank you.
Check the burner orifices very carefully- spiders like to build nest and plugs burner where it comes out of the maifold- flame on that burner may look alot lower than the others and if this is the burner that is nearest the spark or hot surface ignitor [or standing pilot] the gas will build up in the other chambers before this burner lights- then you have what amounts to a small explosion. Clean this burner orifice out with a thin wire

Cheers
JSA
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Old 02-16-2005, 11:37 PM   #10
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Re: Loud Bang Noise


This used to happen from time to time at my father's house. The heater was in the laundry room which was where the dogs slept.

Every once in a while there would be an explosion like sound from the heater.. you know what is coming right?

Nobody knew what it was, always happened without ryme or reason and only when the heater came on...

Turns out that the little bits of doghair and dust would settle into the heater and somehow plug up the works just a tad. The 'explosions' would produce 1.5 feet of flame for just an instant.

Cleaning the heater well, and being more consistent about cleaning the floor in the laundry room solved the problem.
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Old 02-18-2005, 12:56 AM   #11
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Re: Loud Bang Noise


gremlins.....;definately gremlins

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