Is a damper needed in the exhaust stack with a fridge converted electric smoker?

Discussion in 'Fridge/Freezer Builds' started by tschmitt, Feb 26, 2012.

  1. Title pretty much sums it up. Im not sure if a damper is need in my exhaust stack with my fridge build. Im planning on using a 4" stack, intake in the bottom of the smoker, PID controlled 1900w strip heater with an AMNPS.

    Thanks in advance if anyone has some advice [​IMG]
     
    Last edited: Feb 26, 2012
  2. pops6927

    pops6927 Smoking Guru Staff Member Moderator Group Lead OTBS Member SMF Premier Member

    Probably wouldn't need a damper, but a cover for it would be necessary so rain or rodents couldn't get inside.
     

  3. Thanks alot for the advice [​IMG]
     
  4. mneeley490

    mneeley490 Master of the Pit OTBS Member

    My electric fridge conversion is a bit different from traditional vintage fridge smokers. I have a 1-1/4" drainpipe in the bottom that doubles for my air intake, and a 1-1/2" smokestack coming out the top back. I have no mathmatics to back it up, but I felt the smaller outlet would make for better heat retention and put less strain on the element and PID. In that light, I opted to install a damper inside the pipe that could be opened full for smoking, or sightly closed when no smoke is being used. The wingnut is aligned with the damper, so I know what position it is in.

    You may never need to use a damper, but it might be nice to have the option; and it would be a lot easier to install before you get everything put together.

    [​IMG]
     
  5. mr t 59874

    mr t 59874 Master of the Pit SMF Premier Member

    Not if you can control the airflow elsewhere.
     

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