Range hood questions
snwbdr94
2 years ago
last modified: 2 years ago
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kaseki
2 years agosnwbdr94
2 years agoRelated Discussions
range hood questions
Comments (3)I believe there are rear exhausting wall mounted hoods, but I can't give examples at the moment. If you use a roof blower, it would be relatively simple to block a top port and add a back port (with the help of a sheet metal shop). In any case, this extract from the Wolf Design Guide (available for download) may provide some insight into what may be available in any particular hood series. "Pro hoods accommodate a 10" (254) round duct. Low-profile hoods allow for an adjustable discharge. All other pro hoods are vertical discharge. For the 24" and 27 deep wall hoods, a horizontal discharge kit is available through an authorized Wolf dealer." Wolf is pretty accessible; that is, they answer the phone, and if you call them asking about details I imagine you could get some drawings showing the discharge apertures. I have no direct experience with other hood manufacturers. kas...See MoreCorian Range hood question, part II
Comments (2)We put in tons of blocking everywhere. It's all over the bathrooms, so I think that'll be taken care of....See MoreRange Hood Questions
Comments (6)Last year, I made the same switch you are now considering, so I know how much there is to learn about kitchen ventilation! I felt like I was studying for a Ph.D. in HVAC!! It was extremely disappointing to discover how very little most HVAC & appliance professionals in my area know about this subject. I literally had one HVAC company tell me, "You just pick out whatever color hood you like, and we'll hang it. But we don't run ductwork for hoods, because all you got to do it buy a recirculating one." If it weren't for @kaseki & @opaone, I might've believed him, but at that point I had learned too much to accept that answer! Keep reading their threads on Houzz. They'll steer you right!...See MoreRange hood questions - and LG gas range while I'm at it!
Comments (9)Things you might have noticed in your reading: Hood should overlap the cooking area by a few inches Airflow should be of the order of 90 CFM per sq. ft. of hood entry aperture for residential style hoods Calculated air flow requirement from above should be 2/3 of the blower's (zero static pressure) CFM rating, more or less depending on myriad factors Duct size should keep max power flow velocity in the 1000 to 2000 ft/min range Noise can be reduced by one or more of these mechanisms: Using a remote blower with a long duct in-between; not applicable to going directly out the wall Using a remote blower with a silencer in-between; not applicable to going directly out the wall Using a more powerful than needed proximate outside wall or in-hood blower and running on part power Using a larger blade external blower with appropriate motor and gearing for the required CFM (applicable to up-blast commercial roof blowers) Hood performance and efficiency improve with the degree to which they emulate commercial hoods, given the limitations of residential kitchen architectures. This means having volume under the baffles, using true double reversing baffles, having low resistance, low turbulence air flow above baffle area to the ducting. I am not familiar with Hauslane, and in any case do not try to rate hoods I haven't used, so I'm limited to Wolf, and in particular to their Pro Island hoods. No air leaves the kitchen via the hood that doesn't get supplied to the kitchen. The supply is called make-up air. Read MUA threads here. For best hood performance at the levels that the hood air flow should be able to reach, deliberate MUA is needed, not house leakage. Whether this results in an expensive complex system or a modest cost simple system will depend on factors that will be obvious from reading MUA threads....See Morekaseki
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