Question about Zephyr AK8100S Kitchen Hood

3 Answers

So noisy even on low

The salesperson recommended a Zephyr ADS100S for over my Jen Air 30" stove. It was installed by the contractor in a new home two weeks ago.
It is so noisy even on low and when on high it is like being in an airport.
What is wrong? Can a specialist examine this unit? It is not useable.

Also, how do I get an owner's manual, installation instructions and a service manual. Trying to understand the problem. Everybody that visits and listens to the fan says turn it off.

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  • 3 more comments 
  • acapomsn Aug 13, 2008

    It is a Zephyr fan/light unit mounted above the stove into the bottom of the cabinet. Correct the model # AK8100S. I was able to get the owner's manual, installation instructions. Still looking for the service manual.



    As to selecting a person, I need someone who is familiar with ventilation systems for over the stove.

  • acapomsn Aug 13, 2008

    It is so loud I can't tell what is making the noise. No it is not rattling. Sounds like a jet plane taking off.

  • acapomsn Aug 13, 2008

    how do I respond to your comment. I don't want to "accept a solution" when you pose a question for me to answer.

  • acapomsn Aug 13, 2008

    This is basic advise you have given me. I'm looking for technical information as to what can possibly be wrong.

  • acapomsn Aug 13, 2008

    It is not that easy to take it back. It is vented through an upper cabinet and inserted into the bottom of the cabinet. If it isn't the fan could it be a problem in the duct work.

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Change the motor thats not supporting the motor is 4.3 amp check it before you replace new one thats it

Posted on Aug 13, 2008

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After reading the reviews on this model, it is supposed to be one of the quietest models on the market. I'm going to say that the fan assembly is loose or it has a bent fan blade. Either way, with this unit being as new as it is, take it back, and exchange it for a new or different one.

Posted on Aug 13, 2008

  • Ryan Rogers
    Ryan Rogers Aug 13, 2008

    I'm leaning towards the fan, however, it could be a problem with the duct work. If the duct is blocked or partially blocked the back pressure could cause a vibration in the fan. My former Father-in-law owns an air conditioning and heating company, I used to fill in for him time to time, and I've seen fan ducts that were blocked create a back pressure that created a horrible vibration in the fan. I don't see why these would be any different, it's the same principle, only smaller. Also, there is a noise dampener duct that is used on the bigger commercial units to keep the noise down in businesses. I don't know if they have a similar product for fan hoods, but it might be something to check into. The contractor should know, or the hardware store you got the hood at. Basically, it's a larger mouthed duct at the fan that narrows into the smaller regular duct. It allows more air to flow, and more smoothly, near the fan, then tapers the air into a quicker flow through the regular duct further down away from the fan, and deeper into the wall (or Attic in your case), to reduce the noise level.

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Does the fan seem like it is spinning off balance. What exactly is making the noise, the fan or the motor. I will see if I can find an owner's manual. Please get back to me on my questions

Posted on Aug 13, 2008

  • 2 more comments 
  • Benjamin Patri
    Benjamin Patri Aug 13, 2008

    Before you try fixing it, this is what I would do. Call up the place of business that sold it to you. Ask them to either send someone out to your house or listen on the phone to this hood. Make them do something about it. If they refuse, then have them direct you to their boss and either talk to them or write a letter explaining the problem of how this never worked. If this doesn't work, then write to the BBB and if the people who you are talking to are leaning towards not helping, then causally mention the BBB. Also make sure that they cover all expenses of replacing it, labor and parts. Any noise is not normal and the contractor should have said something after testing it.

    good luck and let me know if you have any questions. I am sorry for your headache


  • Benjamin Patri
    Benjamin Patri Aug 13, 2008

    you are responding just fine. Since you paid so much for this, I highly recommend going the route I just posted above. Let me know your thoughts on this

  • Benjamin Patri
    Benjamin Patri Aug 13, 2008

    a high whine would indicate a problem with the motor or with the way that the air is moving through the vent most likely caused then with the shape of the vent. Does it sound like the motor itself or the vent?

  • Benjamin Patri
    Benjamin Patri Aug 13, 2008

    It wouldn't be a problem with the ductwork exactly, but the way the air is flowing through it, possibly the ductwork is too small and so there is a higher rate of flow causing the noise but I would think that you should be able to tell whether it is a whine from the motor, from the fan, or whether it is coming from the ductwork. Can you check this for me.

    Also, like I said, you won't be taking it back yourself, you should have the store that you bought it from pay for the removal and the installation of a new one


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