Vent-A-Hood Ductless ARS range hood Update
bookssy
11 years ago
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Is the Vent-A-Hood Ductless ARS range hood worth the $$$ ?
Comments (4)I would not use a low end vent with light, personally. In a relatively small place like a NY apartment, I would probably go for the most effective option. However, these seem to be in the $900-1400 range with the typical 30" at the low end of this. How often do you have to replace that pleated filter? I did see a NY apartment that used a ducted hood and had the duct run into the bathroom where it came out right next to the ventilation duct in the bathroom which pulled some of the cooking smells out since these have some "chimney" effect. I don't know how much the bathroom smelled like food because they ate out a lot like many Manhattanites....See MoreRange hood venting options
Comments (10)mike_home Your point is correct. The point I failed to make is that the ducting is supposed to be sized for minimal impingement deposition of grease particulates that aren't captured by the hood filter -- thus the intent of the velocity range specified by NFPA 96. (Also please see the reference below.) In any case, for a duct meeting velocities up to 2000 ft/min, a modest duct length will have much lower pressure loss than the baffles or mesh filters in the hood. (And, I should note, lower noise generation than the blade tip turbulence of the blower producing that velocity.) Hence the duct size does not dominate the volumetric air flow, the hood filtering does in concert with the limitations shown on the hood blower's fan curve plot. I would recommend against a duct size so large that the actual, not the rated, air flow velocity is below 500 ft/min during grease particulate generation, unless the duct is so short that absolute grease collection is negligible. Ref: ASHRAE Journal, November 2002, pages 26 - 31, New Rules For Kitchen Exhaust, William D. Gerstler...See MoreCan I get a wood hood over the range with a ductless system?
Comments (11)I think ARS might be better than other recirculating though I don't know that for sure. Good ventilation (HRV/ERV) will help but it could take 24-60 hours to remove contaminants. And that's assuming good ventilation which something like 97% of homes in the U.S. do not have. Contaminants really need to be removed at the source. Once they spread in to the house it will take a lot to get rid of them. These are gases and particulate matter that you are not necessarily going to notice in any way. But they slowly degrade people's physical and cognitive health. People can say that they've had a ductless for years and thought it worked great but I've not yet seen any of them provide measurements of VOC's nor medical test results from before and after. We measure O2, O3, CO, CO2, NO2, and CH2O along with PM1.0, PM2.5 and PM10 on a continual basis and the results can be quite scary. Some of what's coming out of EU and LBNL recently is quite eye opening. Given what we now know about indoor air quality and health it's irresponsible to not install a proper range exhaust system....See MoreWhat ductless range hood did you choose, and do you love it?
Comments (15)>>>So, what do you suggest?<<< If that was directed to me, sorry, but I can't help on finding effective ductless hoods beyond pointing to the ARS thread as a resource for the OP. No help to you since, IIRC, you already knew about that thread from having recently participated in that discussion and I have no personal experience with the ARS units. My experience from when I have occasionally worked in kitchens with less expensive ductless units ( a Broan hood and several brands of OTRs) was that their undersized charcoal filters were mostly ineffective. IMO, those units well deserved the epithet of "forehead greasers" bestowed by one of the LBNL (Lawrence-Berkeley National Lab) reports that Opaone mentioned. ETA: As I think more about my previous ductless hood experiences, I'm thinking that most of them only had mesh filters and not charcoal filters except for the Broan model which had a rather weak fan and didn't seem to do much more than the OTRs. Maybe better than nothing, but not by much....See MoreSteven Farish
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