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sweaty 08-11-2011 06:03 AM

Exhaust Fan on Built-In Microwave
We're renovating our old kitchen and are getting a built-in microwave over the range. My wife wants the exhaust to go to the outside to get rid of smells and steam. I would like a filtered one to prevent outside air from coming in.

If we go with venting outside, can it be sealed with a draft preventer? If we go with a filter, would it reduce smells and steam?

fabrk8r 08-11-2011 07:41 AM

Vent it outside. The vent kit will have a backdraft damper in the outside wall hood.

You'll be much happier with your indoor air quality by venting outdoors. The carbon filter used for recirculating vents really don't do much as far as reducing odors.

Master of Cold 08-11-2011 02:41 PM

If you vent it outside, how will you know when you are burning the popcorn?

sweaty 08-11-2011 10:08 PM

Good advice. To vent outside, what exterior parts do I need? What comes with the microwave?

My electrician needs to know how high the fan is and where to mount the box for the microwave's dedicated circuit. Is it a separate cicuit for the fan?

AandPDan 08-12-2011 09:36 AM

One circuit powers the microwave and fan. Usually 20 amp, check the directions.

Is this a hardwired microhood? Most have a cord/plug arrangement. In that case the outlet normally goes into the cabinet over the microwave. A hole is drilled and the cable runs into the cabinet.

Outside venting is the best way to go.

sweaty 08-18-2011 05:13 PM

Good advice, everybody.

What should I look for in a new microwave?

AandPDan 08-18-2011 05:46 PM


Originally Posted by sweaty (Post 710259)
What should I look for in a new microwave?

Check the features you want. Most have work lights, some have night light features (in some you can set also set automatic on/off time for the light), you can also get meat probes if you want. Turntables are pretty much standard.

Compare power output. 950-1100 watts or so is pretty much standard.

Watch how they vent. It pays to look the model up online and read the installation and venting instructions before you buy it. Most will convert from recirculating to rear or top exhaust.

Good luck.

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