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Old 11-10-2010, 09:38 PM   #1
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Upgrading old kitchen exhaust fan


I am looking to upgrade my kitchen wall exhaust fan. It is the older type with the pull chain. To operate it you release the chain which allows a spring loaded metal door to open on the outside of the house. When that happens, a button is released which turns on the fan. This is a common older design.

I would like to upgrade it to a higher flowing newer design, the type with the black box on the outside of the house with the damper on the bottom. I've seen the newer design fan "hacked" into the older drum with sheet metal screws and lots of caulk, but I was wondering if there is any proper way to retrofit a new fan into the old?

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Old 11-11-2010, 05:59 AM   #2
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Upgrading old kitchen exhaust fan


Trying to retrofit a new fan into an older housing often looks bad. Most fans come with the correct housing for thru the wall installation. Unfortunately, most of that type of fan are limited to low CFM and high noise fan motors. Squirrel cage type fans are usually more powerful and quieter, but need more space. They are found in the better range hoods or stand alone hoods, and require ducting to the outside.

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Old 12-01-2010, 07:19 AM   #3
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Upgrading old kitchen exhaust fan


Quote:
Originally Posted by Just Bill View Post
Trying to retrofit a new fan into an older housing often looks bad. Most fans come with the correct housing for thru the wall installation. Unfortunately, most of that type of fan are limited to low CFM and high noise fan motors. Squirrel cage type fans are usually more powerful and quieter, but need more space. They are found in the better range hoods or stand alone hoods, and require ducting to the outside.
Agree with this opinion. I admire with it. :D
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Old 12-01-2010, 09:19 AM   #4
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Upgrading old kitchen exhaust fan


How involved the transition will depend on the houses' exterior. The fan you have, while being a dated design, is a very effective unit to move air. As Bill said, melding the two units together can be a real ugly growth on the outside of the house. I don't think this is the," upgrade" you had in mind.
Post some pictures, interior and exterior, for suggestions as to possible transitions.
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Old 02-22-2011, 12:40 PM   #5
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Upgrading old kitchen exhaust fan


there is an interesting article about that

http://www.rangehoodsstore.com/artic...haust-systems/
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Old 02-22-2011, 04:14 PM   #6
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Upgrading old kitchen exhaust fan


Here is another interesting article:

http://www.greenbuildingadvisor.com/...ir-range-hoods

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