Home > Air Filters > OdorHog Vent Stack Pipe Filter 4.0", Black ABS with Mushroom Cap, Removes Outdoor Septic and Sewer Odor

Vent Stack Pipe Filter 4.0, Black

Odorhog Vent Stack Pipe Filter, Activated Carbon Filter Bag, Plastic Vent Pipes, Unpleasant Outdoor Odors

H&F Rating 25 reviews
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What We Like

  • Eliminates unpleasant outdoor odors from the roof vents
  • Offers easy and fast installation
  • Easy to withstand the sun and extreme weather conditions


  • Moderately effective

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About Vent Stack Pipe Filter 4.0, Black

The OdorHog eliminates odors as they exit the plumbing vent stack. The carbon filter installs directly onto plastic PVC or ABS vent pipes on the roof. They are made to stand up to the harshest climates and storm conditions. A freeze protectant coats the activated carbon and keeps it from sticking together.

Results of our analysis:

We analyzed 209,584 reviews for 162 products in the Air Filters category.

We then analyzed 25 reviews for this product. None were recent.

Around 56% of reviews were positive and about 16% were negative.

Final Score:

8.43 out of 10, based on these factors:

  • Compatibility
  • Easy to install
  • Easy to maintain
  • Filtration
  • Longevity
  • Overall satisfaction
  • Packaging
  • Quality of material
  • Size
  • Value for money
  • What buyers say about Vent Stack Pipe Filter 4.0, Black

    I put this on the smell and it went away in a matter of moments. If you don't want to do the labor of sawing pipe, you can get a bag of charcoal.

    We were having a problem with the sewer smell coming from the vent pipes in our new home, so we decided to buy 3 from OdorHog.

    I found that the smell was pushing down into the yard because of the downward air pressure, because our house is built on the side of a mountain.

    The problem was solved when the carbon was adjusted according to the instructions on the web site.

    The drains are still working and we have not noticed or slowed down after installing the Odor Hog.

    Common Questions


    How long will it last? Do filters need to be changed?


    There is a replaceable charcoal filter inside the body, in a mesh bag.


    How many times a week do you need to change the filter?


    If you have a very active home and vent system, you can expect to get 18 months to 2.


    Is it possible to use this as an air admittance valve?


    The OdorHog vent pipe filters have a densely packed carbon bed that the vent pipe breaths through.


    Why isn't this recommended for mobile or manufactured homes?


    If you run water or flush toilets in your home, you will probably see the smell of OdorHogs, heavy duty carbon filters designed for homes that have a standard vent system that has enough positive pressure to push through the densely packed, carbon filter when you run water and or flush toilets.


    Is it possible to make them with solar fans for outhouse use?


    We don't have a sealed vent system to filter the odor.

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