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Thread: White powder from heater vents
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12-19-2012, 01:28 AM #1
White powder from heater vents
Fine White powder coming from heater vents. Goodman gmh95, 1 year old. Ran fine through first summer and winter.
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12-19-2012, 05:17 AM #2
Re: White powder from heater vents
Is there a humidifier on the furnace?
Filters clean?
When was the furnace last serviced?
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12-19-2012, 06:35 AM #3
Re: White powder from heater vents
"California snow"?
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12-19-2012, 06:54 AM #4
Re: White powder from heater vents
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12-19-2012, 08:07 AM #5
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12-19-2012, 10:01 AM #6
Re: White powder from heater vents
It does have humidifier, serviced a week ago. Tech had no clue. Filter is new. Working on photos
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12-19-2012, 10:13 AM #7
Re: White powder from heater vents
Humidifier can create a white powder particularly if you have a water softener due to salt residue as water evaporates.
In some cases even if there is no water softener you can get a powder being created due to hard water.
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12-19-2012, 10:50 AM #8
Re: White powder from heater vents
Photo attached, I think.
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12-19-2012, 11:08 AM #9
Re: White powder from heater vents
Okay photos don't tell me anything.
Is the powder crusty and turn to powder when crushed?
Still thinks its a humidifier problem.
The next step is to turn off and take out humidifier pad and pan and vacuum up powder and see if problem persists.
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12-19-2012, 01:16 PM #10
Re: White powder from heater vents
Larger chunks look like dandruff flakes an yes they do turn to powder when crushed. Humidifier theory sounds good I will look into posted resolution and post outcome. Thx
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12-19-2012, 02:49 PM #11
Re: White powder from heater vents
Probably should have mentioned this before but I have two identical heaters that were installed at the same time by same contractor. One spews white stuff while other seems to work fine. However, I did notice the drain setup on problem unit is a long run and ain't sloped 1/4" per foot.
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12-19-2012, 03:29 PM #12
Re: White powder from heater vents
Humidifier theory sounded promising, but unfortunately my system doesn't have a humidifier. Sorry about the bad info.
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12-19-2012, 03:33 PM #13
Re: White powder from heater vents
No humididifier, I assumed I had a humidifier because I found some humidifier documentation with my heater documentation. I apologize again for bad info .
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