Kitchen range hood too loud
jaxo
2 years ago
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Comments (17)
gardengrl66 z5
2 years agoRelated Discussions
Oh NO! Thermador range hood installed and it's SOOO loud.
Comments (5)Ideally, the loudest noise should be the blade tip turbulence from the blower fan blades. This can be reduced at the cook station where space permits by using a remote blower and in-line silencer. The second loudest noise should be hiss from turbulence around the baffles. This cannot be helped, but may vary with baffle design. Unfortunately, in some cases the loudest noise is from an unbalanced motor-fan assembly, and/or insufficient isolation of motor vibration from the house and from the ducting. This type of noise can be easily carried via the ducts. (Of course, a blower in the hood is not isolated at all except by its mounts, and needs to be well balanced. Duct noise proper due to turbulence in the ducts (and here I will include interior hood turbulence at all sectional area transitions), when the duct is properly sized for air speeds in the 1000 - 2000 ft/min range, can compete with, but shouldn't dominate the baffle noise unless the duct path is particularly tortuous. Where one is stuck with a particular motor-fan assembly that appears unbalanced, use of an industrial balancing shop to correct the problem may be appropriate. kas...See MoreOh NO! Range hood installed and it's SOOO loud. Normal?
Comments (11)OK, we did some more research and there's clearly a problem. On the appliance forum theres a good vent blower overview that states that the majority of the sound from the hoof should be airflow, and the secondary component of the sound is the motor. In our case the majority of the sound seems to be from the motor. 1) The ducting installation is very clean. One 90 elbow and then a straight 5-foot shot to the roof cap. Solid ducting, very well secured. 2) We turned the blower on BEFORE any ducting was installed or filters in place. The sound was atrocious. After ducting hooked up and filters in place, sound was exactly the same. It seems in a normal situation, the increased airflow resistance of ducting and filters should have INCREASED the noise level. On this case it did not. I suppose it could be the airflow over the ventilator motor's blades? (It is a dual-blower model.) 3) Even on the lowest setting, you can feel the floor and cabinetry around the range vibrating slightly. On high the vibrations are easy to feel. That doesn't seem right. 4) I cannot find noise level specs for our model (discontinued model). But other hood manufacturers and even other Thermador models have specs such as 2.0 sones to 6.5 sones, low-high. Where one sone is roughly the equivalent of a refrigerator, 4 is normal conversation, 8 is city traffic. Although of course it's subjective without a meter of some sort, I would say we've got about 6+ at low and well over 8 at high. We talked about getting a remote blower. perhaps that would help. But it seems like maybe it's actually a problem with the motor itself....????? I am going to call Thermador tomorrow. I really hope they will honor the warranty and send someone out to look at it!...See MoreVictory vs. Kobe Range Hoods on Loudness
Comments (1)One of the main contributors to exhaust noise is the ductwork. That is why you can have two homes with identical hoods, and one is loud and the other isn't. If your duct that goes from the hood to the outside is too small, you will have a noisy hood, regardless if you choose Victory or Kobe. So if you want quiet, I'd look first at what diameter is the duct. It needs to be 8" or 10" diameter depending on how many cfms the hood has. If yours is not that big, and you are doing a kitchen renovation, see if you can replace the duct. If you cannot, you will have to live with a noisy hood....See MoreZephyr Tempest II or Tidal II range hood - dual blower loud?
Comments (29)@J Y Yes. We installed the two blowers in the Tempest II and have had it for over a year now. It was the best decision ever and the range hood is one of our favorite purchases during the kitchen renovation. It is not loud when you use it on speed 3 which is the speed we use all the time when cooking. We can still have a conversation in the kitchen at that speed without having to yell at each other. It has 6 speed settings and we only have to use speed 4 when we fry steak occasionally. The two blowers make such a huge difference in sucking up all the cooking smell. Can’t smell someone is cooking as normally the smell would travel up to the rooms upstairs. Very happy with Zephyr’s customer service as well as I called in a couple times prior to making my decision on a range hood and they had been very helpful in answering my questions. Let me know in case you have other questions....See MoreMizLizzie
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