Kitchen exhaust help

[Trey22]

Microwave is in, exhaust vent to outside is in place... problem is they are not connected to each other (see pics), and worse, they are not lined up.

What are my options? Flexible tubing? Rectangle to round converters? Do I need to cut back the top exhaust to make room? Any ideas welcomed

 

[sdifox]

flex tubing is fine, but get the all aluminium ones

 

[highland145]

You should be able to get rectangular transitions.

Curious why the microwave needs to be vented outside? If the cabinet isn't packed full of stuff, what's the difference from a counter top model?

 

[sdifox]

You should be able to get rectangular transitions.

Curious why the microwave needs to be vented outside? If the cabinet isn't packed full of stuff, what's the difference from a counter top model?

It's a microwave/exhaust fan combo is my guess.

 

[highland145]

It's a microwave/exhaust fan combo is my guess.

Maybe there's some building code for it. The in laws exhausts out of the front/top, iirc.

 

[Anubis]

if its a microwave/convection oven it makes sense. just get some alum tubing and connect it should be fine

 

[waffleironhead]

You should be able to get an offset duct to connect the two.

 

[waffleironhead]

Maybe there's some building code for it. The in laws exhausts out of the front/top, iirc.

That's not the best way to go, but sometimes it's all you have. In recirculating setup, they are just filtering the exhaust fumes thru a charcoal filter most likely. You still have all the pollutants, just masked the smell.
Code makes exceptions for the hood being vented outside. Here, an opening window in the kitchen fulfills the vent requirement.

 

[NetWareHead]

Maybe there's some building code for it. The in laws exhausts out of the front/top, iirc.

Even if there is no code that specifically addresses this, the fact he has a provision to exhaust cooking odors/smoke from the stove outdoors is highly desireable. I cant stand the hoods that recycle the air through a flimsy charcoal air filter and then blow it out the top. The entire house stinks of cooking. Cant fry anything indoors, cant use a cast iron pan for a steak indoors due to smoke. We fry everything on a outdoor grill side burner for this reason. My next kitchen will have a real hood vented outdoors for this reason.

 

[NutBucket]

Not that hoods always work well either but I agree that external venting is ALWAYS preferable when possible. Also, if you ever microwave stinky foods the smells are ejected outside as well.

Oh, in my city flex ducting does not meet code.

 

[sdifox]

Not that hoods always work well either but I agree that external venting is ALWAYS preferable when possible. Also, if you ever microwave stinky foods the smells are ejected outside as well.

Oh, in my city flex ducting does not meet code.

not even full aluminium ones? That makes zero sense.

http://www.flex-tubes.com/aluminum-flexible-conduit.html

 

[NutBucket]

Huh? You linked conduit. I thought we were talking about air ducts?

 

[sdifox]

Huh? You linked conduit. I thought we were talking about air ducts?

there are air ducts of the same construction. This was just a quick google search.

this is probably closer to what you need.

http://www.globalindustrial.ca/p/hv...mpaignId=T9F&gclid=CIKA6qvRyMMCFZWGaQodY04AYg

 

[NutBucket]

Best I could figure the reason is grease will inevitably build up in the grooves and could catch fire. Only thing I could come up with.

 

[sdifox]

Best I could figure the reason is grease will inevitably build up in the grooves and could catch fire. Only thing I could come up with.

all ducting with turns have groove. Cannot be helped.

 

[NutBucket]

The fewer the better? Like I said, pure speculation on my part.

 

[highland145]

Even if there is no code that specifically addresses this, the fact he has a provision to exhaust cooking odors/smoke from the stove outdoors is highly desireable. I cant stand the hoods that recycle the air through a flimsy charcoal air filter and then blow it out the top. The entire house stinks of cooking. Cant fry anything indoors, cant use a cast iron pan for a steak indoors due to smoke. We fry everything on a outdoor grill side burner for this reason. My next kitchen will have a real hood vented outdoors for this reason.

Didn't think about that. Makes sense now.

 

[Zivic]

You should be able to get an offset duct to connect the two.

this is the answer ^^^

 

[Trey22]

Thx for the tips/suggestions... Trey the handyman will now go to Lowes/Home Depot.

 

[highland145]

Thx for the tips/suggestions... Trey the handyman will now go to Lowes/Home Depot.

Kidding, sort of. Is there a local hvac shop you can go to?