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HVAC Gurus: Makeup Air for Kitchen Hood... Let's chat...
Posted on 1/18/19 at 11:50 am
Posted on 1/18/19 at 11:50 am
My AC guy tells me that by code, anything over 400CFM kitchn hood requires me to install a makeup air duct with a motorized damper.
Legit? if so, what's this going to cost me?
note: new construction
Legit? if so, what's this going to cost me?
note: new construction
8
Posted on 1/18/19 at 12:27 pm to poochie
sounds about right, moving that much air out of a room to outside will form a vacuum in the house so to let it function properly you need a way to bring in as much outside air as it is pushing out.
why in the world are you putting in such a large vent? do you have a commercial stove and you are running a catering business from your home?
most standard stove vents are only 100-200 cfms max
why in the world are you putting in such a large vent? do you have a commercial stove and you are running a catering business from your home?
most standard stove vents are only 100-200 cfms max
This post was edited on 1/18/19 at 12:29 pm
Posted on 1/18/19 at 12:30 pm to keakar
quote:
most standard stove vents are only 100-200 cfms max
Mine is 350 cfm and is 36"
Posted on 1/18/19 at 12:32 pm to Golfer
quote:
Mine is 350 cfm and is 36"
Are you satisfied with it?
Posted on 1/18/19 at 12:32 pm to poochie
Get a vent <400cfm... problem solved
Posted on 1/18/19 at 12:33 pm to Golfer
I didn’t install one for my 36” hood. Inspector wouldn’t finalize my inspection until I did.
Posted on 1/18/19 at 12:34 pm to poochie
Simply consult with your city inspector if you doubt him. Talk through it, including what he has seen as a remedy and usual costs associated with it. Don't wait until it's too late to bicker over costs or solutions.
Posted on 1/18/19 at 12:36 pm to terd ferguson
My blower is 600 cfm. But I had it installed about 15 yrs ago in GA. Didn’t have a requirement for m/u air at that time. Varies by state.
Posted on 1/18/19 at 12:36 pm to poochie
It's just your basic Broan chimney vent.
Does the job and if anything gets really bad...there's a window I can open.
Does the job and if anything gets really bad...there's a window I can open.
Posted on 1/18/19 at 12:38 pm to poochie
quote:
Are you satisfied with it?
let me put it this way, exhaust vents that have dedicated incoming air vents to offset the air going out work great.
vents that dont have dedicated incoming air vents to offset the air going out struggle to work as well as they were designed to.
its not much of an expense for the results you get from doing it properly and not trying to penny pinch on something this important to keeping you kitchen smoke and airborne grease free
Posted on 1/18/19 at 12:39 pm to Mikey99
quote:
My blower is 600 cfm. But I had it installed about 15 yrs ago in GA. Didn’t have a requirement for m/u air at that time. Varies by state.
Mikey, your post was absolutely no help at all.
Posted on 1/18/19 at 12:46 pm to keakar
quote:
keakar
I’m not asking you if golfer is satisfied with his hoods performance, I’m asking golfer. Your snarky comments add nothing to this thread.
Posted on 1/18/19 at 1:04 pm to poochie
quote:
Legit? if so, what's this going to cost me?
Yes, used to build houses in Texas - we had to do this for >400CFM. I don't know the difference in cost b/c I was mainly field side + no houses we built had <400CFM - so nothing to compare to.
Posted on 1/18/19 at 1:36 pm to poochie
quote:
Your snarky comments add nothing to this thread.
my comments arent snarky, thats just you wanting to read something into them thaty isnt there
you asked for HVAC advise, i have 45 years experience in HVAC residential, commercial, and "some" at industrial level
but take advise from some randoms and have fun with that, i tried to give you the best advice for the best outcome and satisfaction, clearly you dont want it so have fun with that
Posted on 1/18/19 at 1:38 pm to poochie
This is correct.
Posted on 1/18/19 at 1:40 pm to keakar
i was asking for thoughts about it and you told me a) why would i need that and b) just get a smaller one. that's not what i asked.
This post was edited on 1/18/19 at 1:41 pm
Posted on 1/18/19 at 1:42 pm to poochie
Posted on 1/18/19 at 1:44 pm to poochie
Dont know what code says, but from a performance perspective it makes sense to me.
Posted on 1/18/19 at 1:46 pm to poochie
quote:
i was asking for thoughts about it and you told me a) why would i need that and b) just get a smaller one. that's not what i asked.
granted but both are questions that "should" be asked to give you an informed response to what "your" needs are
those details are important to know to give you accurate advise and not just "answers in general" that may be completely off from your needs
i have a very direct way of saying things that sometimes comes off as harsh, its just how i speak, it wasnt meant as anything but my attempt at offering good advise
This post was edited on 1/18/19 at 1:49 pm
Posted on 1/18/19 at 1:47 pm to Golfer
Looking at a 36inch gas stove. What brand bent hood did you install?
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