I used my HVAC guys who are used to cutting holes in roofs. (Mine is composite.) They ran the duct, cut the roof hole, and installed the actual hood in the kitchen. Then, my electrician came to hook up the power so the blower and lights worked.

Does this mean you found a hood? I read so many of your old posts when I was researching pretty hood shapes. I really wanted an MA barrel, but it was out of my price range. I always wondered what happened with you and your search. I was sorry to see you pop up again here still looking. Sorry in that I'm sure it's been a frustrating journey! I was hoping you'd found a beauty and were off enjoying it and your Chambers. :)

Besides HVAC Contactors you may want to check with local suppliers of residential hoods. Because you are dealing with higher cfm hood, asking a local kitchen design studio or higher end appliance shop may be worthwhile. Sometimes they are willing to share who they work with. Although you may want to examine a remote blower, which they likely could supply. I hope you found a good hood for your decor. Your vintage stove is beautiful, they don't make them like that anymore. The Kitchen Forum had an 'eye candy' post with restored stoves that really showed the beauty of stoves with style.

Thanks B and D! I can't believe you still remember my old hood woes!

I think I am finally, finally close to a solution.

Below is pretty much the hood I am now planning. Except 18", rather than 10" as in the photo (because I can rear vent that way' and it is 2" deeper). Hopefully no stack. In white to match "my girl," my beloved O'keefe and Merritt. With scallops!!!! Probably 900 cfm with mesh screens. (Baffles result in lower cfm's, and i need as many cfms as my 8", 20', zig zagging duct run will allow.)

Breezy: the scallops have made me almost forget the Modern Aire barrel hoods. MA hoods are beautiful and dramatic, but now it seems like "everyone" has one. At least everyone on the internet. LOL! certainly no one i know in real life. But the scallops are unusual, and very period appropriate. Of course, price was the main issue. I could never afford the MA. I will have to stretch my budget to almost 2k for the current hood plan.

But after 5 years of this "issue" in my kitchen, I won't get my hopes up until the hood is hanging in my kitchen. And connected to a duct. Ha!

It's really not that difficult to install a hood and ventilation. You need some basic electrical skills, carpentry and so on.

If your run zig zags, remember that slow turns (2 45* versus a single 90*) are better.

Are you sure about baffles lowering the CFMs? I've never heard that. Most people prefer baffles - they're easier to clean and don't get nearly as clogged as mesh filters. I'd seriously reconsider that issue.

It's really not that difficult to install a hood and ventilation. You need some basic electrical skills, carpentry and so on. .....................

Until you get to the roof, and it's 3 stories up, or made of tile or slate, or even a SIP. Know how to figure out and cut a ellipse? A hole is not round on a sloped roof.

HVAC guys are typically the trade that does this, though some appliance install companies do it.

The real place you need to have talent AND experience is on the roof. A poor job there and you have a leak, or ice dam or both !

The hood looks nice. I've not seen anything like it on the GW before. How pretty! I agree to call an HVAC company - do you have Angie's List for yelpdotcom for your area?

You are mistaken that baffles result in lower cfms. Your facts are reversed. It is mesh filters that will lower the exhaust capability of the hood, as the mesh becomes quickly clogged with grease. Unless you wash the mesh filters frequently, you will lose exhaust power after you've cooked something greasy like hamburgers. If the hood you love comes only with mesh filters, just keep in mind the filters will have to be cleaned more frequently than if you had a hood with baffle filters.

Hmmmm. Imperial says that (cleanliness being equal) baffles reduce cfms giiven that the way they work is by intentionally creating a zig zaggy resistance for the air to push through. Even when clean, baffles by their very nature, slow air down. mesh is very functional when it is clean, but as soon as it gets dirty/clogged, performance drops fast. So my understanding is that they have to be kept very clean, in which case there is very little air resistance from the mesh (and so they are quieter, and work well at low speed.). But if I am wrong about all this (as I have been about many many many many things) I know one of the experts will let us know. I got my info from Imperial. (i'll have to hunt for a link.). Either way, baffles cost more (for my hood), and look a bit too sophistocated for my tiny 1928 kitchen.

But Of course I want to have my facts straight! dare I say I am......baffled?

Our ducting set up, though far from straight, is easy peasy because we removed some old flues from the area. So the path exists in the walls, and we already have the hole in the roof. My DH does all our electrical, and said he could easily do the ducting. But I've got a looooong list of "promised jobs" from him, and I can't wait another decade for him to find the time to do it. So will probably hire. $ is tight tho. Hmmmm.

(atto: i'm in the san francisco bay area--east bay. Do you install hoods??)

:-)

Francy

Pleas excues typos. Snet form my moblie deviec

here is a nice and tidy comparison from Kas. he wrote

Baffles retain their efficiency over long periods of time, and have a constant pressure loss that is probably lower than for mesh filters of the same size.
Mesh filters pick up dust, lint, and hair and their pressure loss increases over time until washed. Capture increases with added lint for a while until the flow drops and ventilation is compromised.

Baffles wash easily because the surfaces do not trap lint.
Mesh filters trap lint and washing doesn't always remove it without some aggressive action.

Filters only collect some sizes of grease particles, the goal is for the flow to carry the rest out of the vent ducting. Flow is compromised when the mesh filters accumulate obstructive material. If the larger grease particles didn't condense in the ducting, we wouldn't need mesh or baffles.

Mesh filters require less height than baffles, but flat mesh filter hoods tend to reflect some of the rising effluent unless the flow rate is high enough.
The height used by baffles improves containment in the hood.

Bottom line: Mesh filters used with enough flow rate for the cooking environment can be effective, but mesh cleanliness is critical."

I can't find the Imperial link now, and it is making me kooky. I just *know* i read the bit about baffles and cfms. On the other hand (as a medical aside) i'm experiencing some cognitive issues and extreme memory loss in the past couple years. So it is entirely possible that I am confused about what I read. Argh!! Imperial used to offer baffles on some hoods as an upgrade. In upgrading I feel certain i read a 'note' that advised baffles reduced cfms. I wanted baffles at the time, and so i planned to get their booster pack to make up for this. Am I losing my mind?? DO NOT answer that!

:-)

I'm fine with putting mesh in the DW every day if I have to, but the bit about lint and hair not coming out easily has me worried. I have long haired cats. And a dusty old house.

Francy: I too remember when you and I were both oohing and ahhing over the MA hoods. I did end up getting a barrel hood and cursed the darn rep from SJ to SF (or Napa where he was located!). Total rip off that the rep in our area makes $2000 just for being the supplier....I am sure you have read ad nauseum the woe of those who live within a rep's territory and we do. I loved the hood, but hated the company.

I sold that house already and am on to a new project and have considered the same hood. But like you, I keep seeing that same hood, so am looking at something different! Considering a few other designs but not your gorgeously perfect scallop. It's perfect for your kitchen style!! Can't wait to see you post the pictures!