[Greenbuilding] Non-Motorized Rangehood

[Bob Klahn]

  Dan,
It's not a range per se, but there have been a number of 
through-the-wall exhaust fans which had a chain operated outside weather 
cap/flap.  I believe that Nutone still lists one but have not checked 
for a few years.  You might be able to adapt one to whatever husk you 
have now.

Failing that, could you make a top-hinged, lipped flap that is spring 
loaded with a lever or chain operation?  You might make it positive 
opening by having a double-throw lever.

Bob Klahn

On 1/21/2011 12:08 PM, Dan Antonioli wrote:
> I have an old cottage bungalow that has a kitchen with a 9' ceiling. There's an opening for the old range-hood, which back in the day were not motorized.....they used natural "heat rises" ventilation, and while this isn't as efficient as a motorized fan vent it still works.
>
> Having used this kitchen for a number of years I've been impressed by how well the opening works, but even in our mild bay area moderate winters it still gets cold and I'd like to close the opening when not cooking. So I'm looking into range-hoods that would have a simple lever action opener. Are any such units available? I'm prepared to make a custom range-hood, but if this has been done before and is marketed then life will be a little easier.
>
> Dan Antonioli
>
> Green Builder
> Ecovillager
> Oakland, CA
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