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Old 08-04-2009, 11:58 AM   #1
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Venting a dryer through old chimney


Hello,

My contractor has decided to vent my new dryer (located in basement) through the 5' chimney that used to be used for exhaust of my furnace/water heater (my house is a 2 story brick).....I'm feeling a bit concerned about this given the lint issue - so far have been unable to find any information on whether this is a good idea....

thoughts?

thanks

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Old 08-04-2009, 12:08 PM   #2
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Venting a dryer through old chimney


What you are describing is a code violation and is illegal. Dryer vents are not allowed to terminate in a chimney, they must vent outside of the building.

Although building codes vary depending on where you live, I would think this is illegal everywhere (it is where I live).

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Old 08-04-2009, 12:13 PM   #3
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Venting a dryer through old chimney


Is the chimney only 5' tall from where the dryer vents into it?
Is he running a duct all the way up the chimney to the roof?
Simply venting it into the chimney space does not seem right or safe
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Old 08-04-2009, 12:41 PM   #4
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Venting a dryer through old chimney


Thanks. Just what I thought. It appears that anyone can be a contractor in Ontario Canada.....
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Old 08-04-2009, 02:39 PM   #5
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Venting a dryer through old chimney


"through the 5' chimney" --- at least he is smart enough not to dump it into the chimney.

Clothes Dryer
Connectors flex. [must be metal] max. 8ft. {6ft.} [1501.1,2437.5] {504.3X}
Connector not concealed in construction . . . .[1501.1,2437.5] {504.3.X}
Duct must be smooth metal inside . . . . . . . .[1501.1,2437.5] {504.3}
No screws in airflow . . . . . . . . . . . . . . . . . .[1501.1,2437.3] {504.3.1}
4in. min. duct [elec. = appliance outlet size] [1501.2,2437.5] {908.1}
{14ft. inc. two 90 bends minus 2ft. per add'l. 90} . . . .[n/a] {504.3.2}
[25ft. minus 22 ft. per 45 bend or 5ft. per 90] . .[1501.3,2437.5.1] {n/a}
No mixing with or passage through other systems . .[1501.1,2437.3] {504.3.1}
End outside in backdraft damper & no screens[1501.1,2437.3] {504.3.1}

2006 code additions: ducts no longer than 25' and booster fans no longer accepted. The joints of the pipes would be considered connections, not easily accessible in case of fire or replacement. Be safe, G
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Old 08-04-2009, 03:08 PM   #6
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Venting a dryer through old chimney


Quote:
Originally Posted by GBAR in WA View Post
"through the 5' chimney" --- at least he is smart enough not to dump it into the chimney.
To me that reads that he is dumping the vent into the chimney. I guess we need clarification, however, either way is the incorrect way.
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Old 08-04-2009, 03:22 PM   #7
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Venting a dryer through old chimney


"used for exhaust of my furnace/water heater (my house is a 2 story brick)" ---- 5' wide for double fireplaces, B- vents next to liners. 5' tall chimney to vent an exhaust in a 2 story house would be rather short? Even a 5' tall chimney for a 1 story house --- lol. I have moments, no days, like that all the time, lol. Can you imagine on the roof taping 7 pieces of 3' duct work together for a vent, then the dryer trying to push that moist dryer air up the cold chimney? It would need cleaning every week for the lint build-up, lol. Be safe, G

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