HomeScope Posted March 18, 2004 Report Share Posted March 18, 2004 My training says that a recirculating exhaust fan can only be installed above an electric range, but that the exhaust fan over a gas range must be vented to the exterior. FWIW, the exhaust fan is part of an over the range microwave, in new construction. Can anyone post a code reference (IRC or Cabo if applicable. Any other codes will do) that makes this requirement, or am I off my rocker? (That may be a whole different thread) I know the manufacturer specs may require this as well. If possible, please cut and paste the applicable code so that I can reference it to a builder, as I do not have access to my code books at the time being. Any help would be appreciated, David Fogle HomeScope Augusta, Ga. Quote Link to comment Share on other sites More sharing options...
Renron Posted March 18, 2004 Report Share Posted March 18, 2004 Why outside? If it made a difference then the fan would be automatic, and no need for the switch right? Ron Quote Link to comment Share on other sites More sharing options...
chrisprickett Posted March 18, 2004 Report Share Posted March 18, 2004 David, I think you're off your rocker! I see it all the time. Just another component of "value engineering". No ducting, less cost for the builder. Quote Link to comment Share on other sites More sharing options...
Terence McCann Posted March 18, 2004 Report Share Posted March 18, 2004 I (almost) never see a exterior vented hood be it gas or electric. Takes the fumes, runs it through a cheap metal washable filter and blows it back in your face. In realtorspeak - Helps cool you off while your cooking! Know of no code that requires venting of a gas range. As I think about it though, a lot of misconception abounds when it come to gas and CO. Gas, which burns clean, when burned correctly, is not a hazard when it comes to CO. You could leave a burner run on your stove top, with enough combustion air, and it wouldn't pose a CO threat ever. Quote Link to comment Share on other sites More sharing options...
Paul MacLean Posted March 18, 2004 Report Share Posted March 18, 2004 I frequently get oriental client's. They cook with a lot of oil and want a range hood that vents outside the structure. I know it's not a code requirement, but I write it up under the theory that they're paying for my opinion. My opinion is range hoods should vent outside. Quote Link to comment Share on other sites More sharing options...
RobC Posted March 18, 2004 Report Share Posted March 18, 2004 Here is a little experiment you can perform that will surprise you. Zero your CO Detector Turn on the gas range and measure Get a pot of cold water and place it on the burner Now measure. SURPRISE! [:-bigeyes] So do you need a vented hood and fan over a GAS range? Now, go ask a professional cook that uses them for a living. I turn my fan on PRIOR to using my gas range and stove. Next one I buy will be electric. Quote Link to comment Share on other sites More sharing options...
Jim Morrison Posted March 18, 2004 Report Share Posted March 18, 2004 Rob and Terry are both right. If a gas burner is perfectly tuned, it will not produce any CO. However, once the flame is impinged by placing a pot on the burner, it will make some CO. If the burner is not perfectly adjusted, it gets worse. Tryptophan isn't the only reason you get sleepy after Thanksgiving dinner. Quote Link to comment Share on other sites More sharing options...
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