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Old 01-24-2012, 09:09 PM   #1
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dripping range hood

Hi everyone;

We recently had a new range hood installed and vented to the outside (hooray!)

Unfortunately all winter whenever we cook we have condensation dripping...

The initial roof cap that was install was probably 3 feet high! and in the first cold snap boiling water caused a downpour! The contractor came back and changed it out - to something that is about 16 inches high and added a second damper, and while it no longer pours, we do still get drips. Contractor says the pipe was insulated in the attic

Should the roof cap be that big? When i look on HVAC supply sites everything is very small...

Are there any suggestions for stopping the drip from condensation in the range hood? Or links to what the roof cap SHOULD look like?

The vent goes straight up, slightly sloped roof...



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Old 01-24-2012, 09:14 PM   #2
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Why are you taking his word for it that it's insulated in the attic. Just go look.


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Old 01-24-2012, 09:30 PM   #3
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What size duct does your kitchen fan instalations recommend compared to what you have?
Do you know if the attic portion of that duct is properly insulated or have you only got the contracters word that it is?
If the vent sizing & insulation looks OK then an internal drip catcher, 1" above the roof line that is drained down and out to the roof might be an answer. It is basically a low profile circular gutter inside the vent that guides the condensation to a downward facing drain hole.
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