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Makeover Monday: How to Downdraft in an Island

Written by Steve Sheinkopf | Oct 6, 2014 7:43:51 PM

It's Makeover Monday: Every Monday we look at a professionally remodeled kitchen and/or bathroom and talk about what is good and sometimes not so good about that particular renovation. This article is designed to help you with your project...so let's get to it.

One of the great trends in remodeling is the merging of the kitchen, dining room and living space into one room. It’s a great area for entertaining and an informal gathering space for family and friends.

However, it does create ventilation challenges. It's easy to vent a stove against a wall. You just attach a piece of duct and a wall cap. It's way harder to vent a cooking product in an island in the middle of the room.

Invariably, if you place a cooking product in your island you will have to consider a downdraft or an island hood.

Contemporary Kitchen by Kailua Architects & Building Designers Archipelago Hawaii Luxury Home Designs

 

Contemporary Kitchen by Gatineau General Contractors The Reno Pro

Island hoods are more functional with greater capture area. Smoke rises, so it is more efficient as well. However many people like the sleek look of a downdraft. There are two types of downdrafts. Jenn-Air has the blower integral, meaning inside the unit itself. You can also buy a componentary downdraft system from any number of manufacturers with either an inside or more powerful outside blower.

Downdraft Issues

I saw this picture on a design site. I like the look of it, and as a disclaimer, I have no idea the interaction between the architect and the client. However, we could never sell this a solution. Have a look...

Traditional Kitchen by Millbrook Architects & Building Designers Crisp Architects

 
You are looking at a Wolf range with a downdraft built behind. The problem with a downdraft is capture area. Smoke, grease and heat are channeled and then exhausted outside your home. Downdrafts do not have any capture area, so I do not see this unit clearing 120,000 BTUs plus to the outside.

Downdrafts should be used with cooktops only, because the other problem is the downdraft will have a difficult time pulling the heat from the front burner.

The third problem is installation. You would need extra depth to accommodate the depth of the downdraft and the stove. You will have a big problem installing this in standard cabinets.

How to Downdraft

First question is should you buy one? If you like wok cooking and frying, you should consider an island hood. This is my Moms friends kitchen with an island hood. She cooks quite a bit.

However, for most of us downdrafting is adequate in the right place.

A couple considerations:

  1. Ducting: Large duct to handle the volume. Shorter duct runs are advisable.
  2. Consider induction (if possible) instead of a pro or high BTU gas cooktop. Induction is faster and does not emit any residual heat.
  3. Do not place a vent behind a range, especially a professional range. Jenn-Air has a gas range with an integral exhaust.

Recommended Reads

Additional Resources

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