Range Hood Wall Cap/exhaust Diameter - Appliances - DIY Chatroom Home Improvement Forum

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Old 01-02-2011, 10:23 AM   #1
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range hood wall cap/exhaust diameter

Installing a new range hood (electrolux chimney style, 600 CFM), with through wall exhaust. In Toronto (cold climate). 8 inch round coming from integrated blower unit.

INstall recommends:

In order of preference, use1st. 10" round duct2nd. 8" round duct3rd. 3-1/4" x 14" duct4th. 7" round duct5th. 3-1/4" x l0" duct6th. 6" round duct

Having difficulty sourcing a wall cap >6 inch size... My question is:

Will using the small cap have any major drawback -- thinking mostly about noise or strain on unit. Dont really need the full 600 cfm power anyway, since it is over an induction cooktop (not gas). Any other considerations?



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Old 01-02-2011, 06:54 PM   #2
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call your local appliance store , a 6" round exhaust hood should not be a problem to get.


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Old 01-02-2011, 08:24 PM   #3
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thanks for the suggestion; i haven't tried an appliance store

6 inch is not problem
is it 8 inch that i can not find locally at building supply

will check that out tomorrow

any input on whether the 6 vs 8 inch cap makes a real difference (since it is only going to be ~15in through the wall at that diameter (with remainder 8 inch)?
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Old 01-03-2011, 09:03 PM   #4
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Do you have a heating supply store in the area that supplies the hvac tradesman? I have one nearby that has their own shop where they bend up most of the sheet metal fittings. I can buy small sheet metal items there, but can't buy a furnace per se, because I'm not a licensed heating guy. Also, are you doing anything for makeup air? 600 cfm is a lot to pull out of a house without having a supply of makeup air to take it's place. You don't want to start pulling air down your chimney or flues.
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