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Two dampers on Dryer Vent?

Posted by grandmum (My Page) on
Thu, Sep 26, 13 at 12:48

Is it out of the ordinary to have a second damper on a dryer vent?

There is a standard plastic damper on the vent cap on the side of the house.

I thought maybe a glavanized one in line with the 4" duct would be added protection against critters getting in.

How is your dryer vent set up in regards to dampers/critter management?


Follow-Up Postings:

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RE: Two dampers on Dryer Vent?

Have never, to my memory, had a critter come in a dryer vent.


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RE: Two dampers on Dryer Vent?

I don't think critters are likly to use the vent as an enterance,,,,,,,but,,,,,,if you hired me to make it as near impossible as I could,I would install a single damper that is held closed under spring pressure until the event calls for it to open. Very simple to supply power from dryer when it is running. Some hvac supply houses stock them but they are mostly used for industrial applications. Graingers has them in thier catalog if you would like to go on line and see how they work.


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RE: Two dampers on Dryer Vent?

I have had a bird build a nest in a dryer vent, so I guess other animals might try to get in.

There is a vent cap that has the flapper inside and a large outer cap that includes mesh covering The flapper keeps out drafts and the mesh should keep out critters. However, many of these caps are plastic and I would recommend a metal cap. Squirrels or mice could make quick work of a plastic cap if they started chewing.

Bruce


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