Miele Hood Fan: Hiding the New Duct Work, Best Options for Design & ..
By Any Design Ltd.
8 years ago
I have to build some kind of bulk head to hide some vent duct lines for a new Miele Hood Fan installation. The condo is an upscale modern in design and I'm looking for some creative concepts to pitch to my clients.
I wonder what the designer will come up with? There was some talk about repeating the cabinet material in the way of panels. I think this might look to busy. Not sure really. Maybe just drywall and paint.
What other ideas are out there?
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mama goose_gw zn6OH
8 years agolast modified: 8 years agoMost of the pics I found when I searched 'gardenweb chimney hood' have the vent cover ending at the ceiling, but I assume the vent pipe makes a turn in your client's job. Here's a pic of a simple soffit, check the link for more:
More elaborate soffit--IMO that line of paint is a little too busy:
Traditional Kitchen · More InfoSimilar to pic #1:
Valley Circle House · More InfoSuper sleek:
Jenn-Air® Euro-Style Kitchen · More InfoRelated Discussions
Need advice for duct work for range hood
Comments (8)Concerned? YES! I fear your installer is out of his league. First, cooking ventilation ducts contain grease and may support a grease fire. Under no circumstances should the kitchen ventilation duct contain a gap between hood and roof. I can imagine greasy air being blown into one's attic, bringing back memories of the Cambridge Massachusetts Swift meat packing plant fire ca. 1963. Second, attic ventilation should not be compromised by having the cooking ventilation take over its only egress path unless the attic venting is replaced by a different means. There would be a modest reduction in actual flow rate using a smaller duct. Baffle and MUA pressure losses usually dominate, so the amount of reduction is difficult to estimate, particularly without knowing the duct length and the blower's fan curve. Your likely 800 CFM actual flow rate from the 1200 CFM rated blower through a ten-inch duct might only drop to 700 CFM through an eight-inch duct. The smaller duct would be expected have more turbulence induced noise. It would normally be best to use a ten-inch sized roof cap and ten inch duct. A damper at the roof cap and at the hood are recommended. For a more refined determination, the duct ideally should be sized so that for the actual achieved flow rate the air velocity falls between 1000 and 2000 ft/min to minimize deposition of grease. The lower number is better for minimizing deposition, recent studies show, when the ducting is cold. Ducting in use is normally warm from the kitchen air, unless it is very cold in the attic. So northern climes want a larger duct diameter. I use a Fantech 10-inch silencer myself. Note that these are fairly large so both the in-line blower and silencer sizing should be known before planning the duct path. You may find it convenient to order some interface parts from Fantech at the time you order the silencer. Note that the silencer suppresses sound from the direction away from the hood, so given the option, the silencer should be close to the hood and the blower farther away. kas...See MoreVentilation Hood Advice: Vent-A-Hood or Miele Insert Liner
Comments (26)I am the resident expert only because real HVAC systems engineers don't frequent this forum, as far as I know. Noise introduced into the kitchen will be significantly reduced if an external blower with silencer can be fitted. A lot of the high frequency blade tip turbulence caused noise will be removed. This is also true of an in-line (duct mounted) blower. The issue of the neighbor is difficult to assess. What is the configuration of his or her windows relative to your potential external blower (1500 CFM I assume you meant). Your own window sound transmission is also an unknown. Generally, the external noise could be abated by (a) using a silencer on each side of a duct mounted in-line blower, or (b), using a deliberately under-driven* "up-blast" commercial blower (mounted as a side blast). (I think opaone is using an under-driven blower for his new system.) It is also possible to use a chase to move the blower up to roof level. I have a 1500 CFM nominal Wolf (Broan) blower on my roof. Its sound level is detectable but not obtrusive from the ground, but it might be if in a wall location where the sound is "trapped" between two houses. Possibly a more expensive but similar in design Abbaka downslope unit would be marginally quieter. ------ * commercial blowers of this type can use a pulley system between motor and fan that allows for different ratios. By choosing a ratio that operates the fan blades below their rated speed when the motor is receiving maximum voltage, significant turbulence noise can be avoided. The physical cost is a larger unit than would otherwise be required for the desired flow rate. Residential blower fans are directly coupled to their motors....See MoreCabinets around Range Hood - which option is best?
Comments (10)line the cabinet to the right up with the blocked spot above. It's ok to give exposed hoods some room on sides. I actually prefer this to give a more open look & keep the occasional heavy steam that did not get sucked up off the surrounding cabinets. same sizes on both sides for symmetry. Tile all the way up. Read the stove and hood instruction manuals for suggested placement. It also depends how much you cook, in what is the best type of hood & the spacing needed. Here's an example, that explains why.. From Proline Range Hoods FAQ section: "The third variable which affects the effective capture area of your range hood is the size of the hood. You can have the strongest and most powerful vent hood, with the best design, and if you don’t cover the cooktop and trap the cooking exhaust you can never get rid of it. This is especially true for range hoods over island cooktops. Once you have considered your cooking style consider the size of the range hood. Try to size the hood 6” larger in width than the cook top. Most range hoods come in 22-27” depths with some of the range hoods being 30” deep. The more coverage the better for the serious cooks. If you use your cooktop and you are serious about cooking then remember “coverage is king” especially in an island range hood setting. You can also help yourself by trying to keep your cooking over the primary capture area of your range hood. BBQ and Heavy Smoke cooking environments, both indoor and outside need coverage so size of the range hood is critical. Again, if you can catch the smoke and exhaust you can get rid of it but if you don’t “trap” or catch the smoke it is almost impossible to get rid of without removing an inefficient unnecessary amount of additional air in the room. All of which must be heated or air conditioned in most cases." http://www.prolinerangehoods.com/1-801-973-3959/support/common-questions/...See MoreDoable?--build soffit in adjoining room to hide range hood ductwork
Comments (20)julieste --- Adding to what kaseki said, the hood & soffit idea will be fine. I say this having had to do something similar in my 110 y.o. house. I do a lot of cooking. The set-up looks acceptable and works well enough. Of course, my "good-enough" solution was not the best possible venting set-up I could have had. Some here would say (and do say) that the "merely good" is the enemy of "the best" and only the most optimal will do. Others of us will say that, If you have the the time, interest and budget for "the best possible," have at it. For me, the best possible venting solution would have required reconstructing the back end of my old house. "Good enough" was what I had the time, interest and money for. I'll offer a couple of ideas you could consider in designing your project. One is to consider transitioning the ducting (at the kitchen-den wall) to run across the den ceiling in 3"x10" rectangular ducting. That could make for a shallower, less obtrusive-looking soffit. A second idea to consider might be recessing some shallow LED "can" lights in the soffit as that end of your den looks rather dim in the photo above (although that might be an artifact of the photo.) Maybe hang a couple more paintings at that end of the room. That could make a functional necessity look like an aesthetic design choice. Of course, some find recessed lighting and soffits to be aesthetically abhorrent. YMMV. An alternative to the soffit-and-vent design might be one of the Vent--a-Hood ARS units. (ARS stands for "air recovery system.") These seem to be one recirculating hood system that actually works reasonably well. These are expensive but might be less expensive that the cost of the soffited vent system you are considering. If interested, check out the thread "Vent-A-Hood Ductless ARS RANGE hood Update" which started here a decade ago and was still getting posts a month or so ago....See More- PRO
By Any Design Ltd.
8 years ago 
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8 years agomama goose_gw zn6OH
8 years agolast modified: 8 years ago- PRO
By Any Design Ltd.
8 years agolast modified: 8 years ago User
8 years ago- PRO
By Any Design Ltd.
8 years agolast modified: 8 years ago - PRO
By Any Design Ltd.
8 years ago adja
8 years agoadja
8 years ago- PRO
By Any Design Ltd.
8 years ago - PRO
By Any Design Ltd.
8 years agolast modified: 8 years agoMaybe I should have opened up the email first. Check this out! My client asked me for a top designer and I told her to call Corey. I have know him for a long time and he is as anal about design as me. The big difference between us is that he is both a certified designer and NKBA design teacher/speaker - and I am not. I have opinions but am better building than designing I think - especially when it comes to Kitchens. This is going to be a Kick Ass project. Glad I have a small part in it.
I love designers who can do these 3D drawings!
Thanks Corey!
http://www.houzz.com/pro/coreyklassen/corey-klassen-interior-design
mama goose_gw zn6OH
8 years ago- PRO
By Any Design Ltd.
8 years agolast modified: 8 years ago mama goose_gw zn6OH
8 years agolast modified: 8 years ago- PRO
User
8 years ago 
PROArticulated Design Studio
8 years agomama goose_gw zn6OH
8 years agolast modified: 8 years ago- PRO
By Any Design Ltd.
8 years ago - PRO
Articulated Design Studio
8 years ago
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