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Thread: Rusting chimney
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07-08-2011, 01:11 PM #1
Rusting chimney
What would the recommendation be for an appliance chimney (water heater) that has surface rusting?
Should it be primed and painted? It is over 40 years old so I didn't think it would get a whole lot worse any time soon.
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07-08-2011, 03:22 PM #2
Re: Rusting chimney
The warranty has expired and this vent has outlived its normal service life. Replace it. Also, if this is only a WH, it is probably oversized. Otherwise, they should perform combustion analysis to ascertain if it is firing properly.
Keep the fire in the fireplace.
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07-09-2011, 06:31 PM #3
Re: Rusting chimney
Jon, As Bob referenced it is a vent, not a chimney. A technicality perhaps but one worth adhering to.
Eric Barker, ACI
Lake Barrington, IL
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07-09-2011, 07:06 PM #4
Re: Rusting chimney
That much rust I recommend replacement. When it's less rust and more like surface rust, I recommend prime and paint with approved materials for the application.
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