After getting the new appliances and floors in, we decided we might as well repaint the kitchen. Of course, I figured, well, if we’re doing that, we might as well finally install a vented hood vent that we’ve always wanted.
The catch is that the stove is on the inside wall of the kitchen. I’ve been googling for a bit but can’t seem to find any specific info on what you can/should do/not do when it comes to running vent pipes.
Here’s a sketch of our kitchen showing where I need to run the vent pipe. It’ll come straight up out of the hood vent into the celiling, then run down the ceiling between two joists, then vent out the roof through the attic.
It’ll end up being about 15′ of pipe, though. Is that bad? Not a big deal?
The other question…what diameter is typical range hood vent pipe? Google isn’t helping me on that one.
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also, how much should I worry about intake air for this? We live in an old house (1927) and I did recently add a bath exhaust this past year. Rarely would both be running at the same time.
6" is a common size.
Length depends on the size of the fan----- manufactures specs will say how long that should be.
Basic rules keep it pitched slightly & no trapping.
I have 8" pipe on mine about a 14' run out the gable end. Fan is on the outside commercial penn 1300cfm.
I can't have a fire goin at the same time---- yup just suck it right into the room , untill I build my new fireplace cover.
Your house built in 1927------ no offense, but it probably leaks like a siv, I wouldn't worry about make up air too much.
But be prepared to add make up air later as you do more work on the house & tighten it up.
“It so happens that everything that is stupid is not unconstitutional.” —Supreme Court Justice Antonin Scalia
whoa...6"? Bigger than I thought it'd be. I'll heck out some hoodvents and read up on the spec's.Yea, the house leaks. It's old. In some ways, that's not so bad. ;o)We do have fireplaces as well, though we don't use them. We'll eventually convert them to gas with their own intake/vents so that shouldn't be too big of a deal. I'm mainly worried about the boiler and HW heater, though I hope to convert those some day so that they have their own intake as well. We have radiant heat, so from what I understand, adding an air handler isn't necessarily an easy task.
Hey Plumbbill, mind me asking what type of vent you have? I ask because I roughed in with an 8" pipe before knowing which hood I'd get. Now I'm reading specs and haven't found a 1300 CFM blower that recommends less than a 10" round pipe. Maybe it's not the end of the world but I'd like to stick to manufacturer's recommendations if possible.
Penn DX13Q 1/4hp rated for 1300cfm
http://www.jrsales.net/SUBMITTALS/DOMEX%20DD.htm
It was a freebie, got it off a job back in 96' brand new.
The inside opening is 8" , but a 10" connection is common.
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Here is the hood I built for the fan in raw form
View Image“It so happens that everything that is stupid is not unconstitutional.” —Supreme Court Justice Antonin Scalia
Read the specs on the vent hood. Each has different sized exhaust piping based on the CFM of the fan.
Fine idea on the venting. However I'd go with a vent that came out under the eave of the house. Holes in the roof are bad on general principle. Pipes that run up provide a path where condensation runs down, collects in a lowpoint, and eventually rusts and drips into your ceiling. I'd suspect you will vent steaming pots. thus the condensation.
Metal ductwork is essential. Some day you'll have a grease fire or some serious heat. Metal isn't fireproof but it does have a larger margin of safety than PVC plastic.
So the between the joist action for the vent pipe hopefully doesn't involve blown in insulation in the same cavity? I have that same issue and have avoided opening the ceiling for the reason I'd get a bath of loose fibers.
I found that those electric leaf blower/vac works great on blown in insulation.
I used my wife's with the vac attachment it worked great I was able to transfer the insulation to large bags , then re-use it back in the attic.“It so happens that everything that is stupid is not unconstitutional.” —Supreme Court Justice Antonin Scalia
Your wife's leaf blower. Beautiful.
Don't tie it up for long, she'll still need it this season.
Sounds like a great answer. However I've got some 1940's blown-in that I'd care not to identify. It sure doesn't burn and I'm positive I wouldn't want to breathe it. This is a let sleeping dogs stay covered issue.
One thought the poster could consider is putting a fake cased in beam across the kitchen ceiling. That is of course if he has an old house with higher ceilings. A little drywall, additional mouldings and a good paint job could yield the same resultant ventilation without disrupting the existing material.
You suppose the leaf blower would pick up dirty socks and u-trou left from the kids? It might make cleanup a lot faster.Jack of all trades and master of none - you got a problem with that?
You just gave me a great idea for the wife's X-mas present. Forget the porcelain, I'm going with Stihl.
Ooh yer gonna be in twouble.
My DW bought this one for herself----- she likes to work in the yard----- except lawn mowing , we have a service for that.
I don't remeber what brand it is, it's electric 2 speed 2" blower & 5" vac.“It so happens that everything that is stupid is not unconstitutional.” —Supreme Court Justice Antonin Scalia
I would recommend you get either San Yang Pai http://www.sanyangpai.com/RangeHoods.asp or Vent-a-Hood http://www.ventahood.com/hoodstyles.jsp type of fan, they are both filterless. By centrifical force they separate the grease out of the discharge air.
In the San Gabriel Valley of Southern California the Asian cooks have these hoods in their homes where there is a lot of stir frying. Both of these units have grease catchers that fill up and must be emptied. They do not need or use a grease filter.
get rid of the horizontal part, go straight up. Still only have to put one hole in the roof..
Bud
Can't go straight up...that's living space above it (our upstairs).As for insulation, I don't think I need to touch the kitchen ceiling other than a hold directly above the hood. I'm hoping to go through the floor in the attic above. That should make it a bit less messy. Hopefully. Maybe.;o)