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Old 01-27-2013, 12:47 PM   #1
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Kitchen Range Ductwork Options for a 1927 House


Hello All, I've been searching the forums on this site for options on adding a proper vent to my all-brick 1927 Bungalow.

The problem is that there's is no exhaust vent for the kitchen (other than windows and doors). There are a number of constraints that have to worked around.

Situation - the range is located along an interior wall, about 40-50"" from the nearest exterior wall. The exterior wall are brick - approximately 1ft thick. There is cabinetry on the exterior walls which are needed, and go all the way to the ceiling (so no soffit). In addition, about half of my my daughter's bedroom is located in the "roofspace" above the kitchen.


I can only see two options for adding a vent ductwork.

Option #1, put the duct in the ceiling. The duct would have to make one right angle turn, and run horizontally between the joints for around 50" and exits above the exterior brick wall, between the rafter tails.

Option #2, install a run of ductwork leading straight through the ceiling for around 50-60" (passing through the corner of my daughter's bedroom) and exiting out through the roof.



Option #1 is the least invasive option, but I'm concerned about the 90 degree turn, 50" horizontal run, grease accumulation/fire hazards in such a a long run, as well as the complications of exiting at the brick wall/roof junction.

Option #2 would require relocating some custom built-in furniture and a kneewall. It would also open us up to risks of roof leakage in an enclosed/difficult to access part of the house.

I'm leaning towards #2 for safety, but it would have to wait until we have the roof replaced. I think that #1 would be a much easier project to complete, but if this violates code and creates fire risk, it would be foolish.

In terms of my skills; ductwork and roofwork are the two areas where I have the least skill.

I simply don't have the funds to hire a contractor for anything but the most specialized tasks.

Thoughts?

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Old 01-27-2013, 01:27 PM   #2
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Kitchen Range Ductwork Options for a 1927 House


Way to long a run the vent would be useless.
Looks like you may be stuck with one that just recirulates.

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Old 01-27-2013, 01:55 PM   #3
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Kitchen Range Ductwork Options for a 1927 House


'Course.. ThisOldHouse suggests that I can do Option #1

"For a range placed against an interior wall, the duct can go up into the soffit above the cabinets or between ceiling joists, and then out through the nearest exterior wall."

http://www.thisoldhouse.com/toh/arti...218403,00.html

Honestly, this would be the preference, but exiting the house through a wall is really not feasible due to the cabinet/brick/roof setup.
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Old 01-27-2013, 01:56 PM   #4
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Kitchen Range Ductwork Options for a 1927 House


Quote:
Originally Posted by joecaption View Post
Way to long a run the vent would be useless.
Looks like you may be stuck with one that just recirulates.
That's really going to suck. How do folks do this when they have 20ft vaulted ceilings or an Isand cooktop?

Last edited by RepairmanJack; 01-27-2013 at 01:59 PM.
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Old 01-27-2013, 01:59 PM   #5
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Kitchen Range Ductwork Options for a 1927 House


I would just like to say I am a huge fan of F. Paul Wilson.
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Old 01-27-2013, 02:01 PM   #6
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Kitchen Range Ductwork Options for a 1927 House


By a down draft stove, run it through a closit in the room above, just a few of the ways.
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Old 01-27-2013, 02:04 PM   #7
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Kitchen Range Ductwork Options for a 1927 House


Quote:
Originally Posted by spaceman spif View Post
I would just like to say I am a huge fan of F. Paul Wilson.
Yes, I was surprised that this handle was not already taken...
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Old 01-27-2013, 02:11 PM   #8
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Kitchen Range Ductwork Options for a 1927 House


Quote:
Originally Posted by joecaption View Post
By a down draft stove, run it through a closit in the room above, just a few of the ways.
I've heard of them doing a downdraft on island cooktops, but I know I've seen island cooktops with overhead vents more than 50" from an exterior wall or roof.

Is the main issue that both vent options would require ductwork over 30" What is the optimal and maximum run length?

In the case of my Option #2, I'm including the thickness of the ceiling and the thickness of the roof in my measurement.

---
Also, thanks for the feedback, I appreciate folks taking the time to consider my challenge.
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Old 01-27-2013, 02:20 PM   #9
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Kitchen Range Ductwork Options for a 1927 House


Humm.. it seems that it's a matter of the capabilities of the exhaust fan - that is, do not exceed the fan's recommended capacity. Of course, that's what some of the cookie-cutter DIY sites are saying... I'm hoping for more in-depth insight.

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