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    Superior/Vantage Hearth Outside Combustion Air Kit with Flex Line

    List Price: $49.99
    Sale Price: $36.90
    You Save: $13.09 (26%)
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    Product Details
    Manufacturer: Vantage Hearth
    Part Number: AK4
    eFireplaceStore Item Number: CUI-VAK4
    UPC: 043593043047


    • Outside Combustion Air Kit with Flex Line
    • For use with B-Vent Gas Fireplaces and Wood Burning Fireplaces

    *Venting Requirements: This unit requires venting pipe with an inner diameter of 4 Inches. Please see the Venting Components section on this page for venting pipe that must be used with this unit.

    Any combustion appliance requires a combustion air supply, and this Outside Combustion Air Kit by Vantage Hearth provides for that requirement. This air kit with Flex Line is designed to be used with Vantage Hearth heating appliances that require outdoor combustion air flow, and enables the stove or appliance to pull air from outside of the house rather than from the inside. These air kits increase overall heating efficiency and keep the whole house warmer because you are pulling in air directly from outside rather than through the house.
    Customer Questions & Answers
    19 Questions & 19 Answers
    from Yelm, WA asked:
    September 18, 2017
    Can I use the flex line for the exhaust vent for my pellet stove?
    1 Answers
    You may only use pellet vent pipe for exhausting a pellet stove. This outside air kit is only approved for use with various Superior/FMI wood burning and gas fireplaces. It draws in fresh air from the outdoors when installed with these systems and is in no way tested to exhaust combustion gases under positive pressure.
    Will M.
    on September 19, 2017

    from MD asked:
    September 9, 2017
    Can this be used for a normal masonry fireplace?
    1 Answers
    If you are able to modify it to attach to the masonry fireplace, it sure could be.
    on September 11, 2017

    from WV asked:
    August 30, 2017
    What is the diameter?
    1 Answers
    This is 4" in diameter.
    Brennan W.
    on August 30, 2017

    from Anderson, IN asked:
    May 13, 2017
    I have a vent-less fireplace. Does it require the installation of the outside combustion air kit?
    1 Answers
    An outside air kit would only be required by local code.
    Will M.
    on May 15, 2017

    from Dallas, TX asked:
    April 1, 2017
    Is the outside cover made of plastic or aluminum?
    1 Answers
    The hood is made from unpainted galvanized aluminum.
    Will M.
    on April 3, 2017

    from New Florence, PA asked:
    November 27, 2016
    Can this be attached to a wood burner?
    1 Answers
    This kit is indeed designed to be attached to a wood burning fireplace with provisions for outside air.
    on November 28, 2016

    from WA asked:
    February 23, 2016
    How many feet of flex line does this Superior/Vantage Hearth air kit come with?
    1 Answers
    This kit has 3 feet of flex hose.
    Brennan W.
    on February 23, 2016

    from Bisbee, AZ asked:
    February 17, 2016
    Can you give me the pipe diameter and length for this Superior/Vantage Hearth flex line?
    1 Answers
    This kit contains a three-foot length of 4" diameter flexible duct. Please note this kit is only suitable for use on certain Vantage Hearth/FMI/Superior woodburning fireplaces.
    Tyler M.
    on February 17, 2016

    from FL asked:
    February 20, 2015
    Is this outside combustion kit 4 inches in diameter?
    1 Answers
    This outside combustion air kit is indeed a 4 inch diameter system.
    on February 20, 2015

    from Deltona, FL asked:
    February 16, 2015
    I have a vent that is very similar to this and I am just now finding out what it is for. However, the inside of my vent hood has a flap that closes over the opening into the fireplace and house so I am not sure how this is drawing outside air if the flap is closed. Is this perhaps a dryer vent and not an outside air kit?
    1 Answers
    It does indeed seem as though at some point the external hood to your fireplace fresh air kit was unknowingly replaced with a dryer vent cover instead. Being that these are designed to let fresh air back into the fireplace when the house is under negative pressure, a standard dryer vent cover would not allow the fresh air kit to operate as designed.
    Chris C.
    on February 17, 2015

    from Beckley, WY asked:
    October 10, 2014
    Will this kit work with my FW240007 model CFM wood stove?
    1 Answers
    Unfortunately, this air kit is not compatible with this stove, nor is an outside air kit produced for this particular model. I apologize for the inconvenience.
    on October 10, 2014

    from SC asked:
    September 7, 2014
    Is this kit required for a wood burning fireplace?
    1 Answers
    The manufacturer does not require this kit to be used with their wood burning models, however it is an excellent idea to use it. As homes become tighter and tighter, makeup air is often at a premium. The large amount of dilution air that is pulled from the home during a wood burning fire can eventually lead to a vacuum effect, with smoke being drawn back down the chimney and into the home. Furthermore, some jurisdictions require the use of such a kit, due to the aforementioned issue.
    on September 8, 2014

    from Atlanta asked:
    May 1, 2014
    What is color and type of material of the outside vent cover (the part that looks like a dryer vent cover)?
    1 Answers
    Per the manufacturer, the outer vent hood is unpainted galvanized aluminum, but it can easily be painted to match your home.
    Collin C. - NFI Master Hearth Professional
    on May 1, 2014

    from Cireleville, Ohio asked:
    April 27, 2014
    Will this work on an AK4 fireplace?
    1 Answers
    The AK4 part number actually specifies a 4 inch combustion air kit for FMI fireplaces. The VAK4 and AK4 can be used interchangeably.
    Collin C. - NFI Master Hearth Professional
    on April 28, 2014

    from Leakey, Texas asked:
    December 19, 2013
    What is the diameter of the fittings?
    1 Answers
    The fittings in this kit measure 4 inches in diameter.
    Collin C. - NFI Master Hearth Professional
    on December 19, 2013

    from Winchester, VA asked:
    October 3, 2013
    The cover for the vent on the outside of the house was broken. Can I replace that cover? My house has vinyl siding. I have pulled off all of the calking around it but nothing feels loose and I don't want to damage the siding trying to get the old vent cover out.
    1 Answers
    While we do not carry just the cover itself, the cover from this kit could be used as a replacement. The cover is no more than a dryer vent style cover.
    Collin C. - NFI Master Hearth Professional
    on October 3, 2013

    from IL asked:
    August 15, 2013
    What is the diameter of the outside vent pipe?
    1 Answers
    The inner diameter of the flex line in this fresh air kit is 4", with the outer diameter being only a fraction of an inch larger.
    Tyler M. - NFI Certified Specialist
    on August 16, 2013

    Jeff Spears
    from Memphis, TN asked:
    October 12, 2012
    Does this item work with the model V3612ST see-thru fireplace?
    1 Answers
    This would indeed be a suitable outdoor air kit for the Vantage Hearth fireplace you mention. It is especially recommended for new construction, as today's tightly insulated homes can cause poor performance from an open wood-burning fireplace.
    Collin C. - NFI Master Hearth Professional
    on October 12, 2012

    Dan Eliopoulos
    from Milwaukee Wisconsin asked:
    March 12, 2012
    What is the spec on this kit? What is the size of the flex line? I am also looking for Blower kit. I Have a part number of BK3-M What is the size of this kit. Also what other blower kit do you offer and what is the size? I have a 42 inch fire place I have had for a number of years TEMPCO 42 inch I have tried to contact the company and it appears they are out business. Maybe you can help me with the items I need.
    1 Answers
    These accessories are specific to Vantage Hearth appliances. You are likely correct about Tempco going out of business. However, if you could provide a model number for your fireplace, I'd be happy to see if we can match up these items for you.
    Kevin E. - Fireplace Specialist
    on March 12, 2012

    Customer Reviews
    5 Reviews
    60% (3)
    40% (2)
    0% (0)
    0% (0)
    0% (0)
    80% Recommend this product (4 of 5 responses)
    By David from NY on July 18, 2017
    I would recommend this item to a friend.
    Fireplace Air Kit
    Quick delivery. Item was as described. Good deal.
    By Randy from Cottage Grove on April 11, 2017
    I would recommend this item to a friend.
    4' fresh air vent intake kit
    works good, easy to install
    Proshas metal
    Conshas plastic vent cover
    By Monica from Lucedale on December 29, 2016
    I would recommend this item to a friend.
    Perfect, after long search
    I searched over various sites diligently for a reasonably priced outside air kit that would work for our space (also mobile home approved) and this was the perfect find! We coupled it with a wall thimble and now enjoy outside air for our wood burning stove.
    By Teri from RANDOLPH on December 1, 2016
    Quick shipping. Great product.
    Ordering process was easy. Folks very helpful. Shipped quickly.
    By Richard Hoppins from Greensboro, NC on December 15, 2014
    I would recommend this item to a friend.
    Good Value
    The combustion air kit arrived on time and undamaged. All parts shown in the photo can with the kit however, I would suggest buying two band clamps for the hose and also a tube of waterproof chalking. Depending on your outer wall, you might consider longer screws for attaching the vent housing.
    ProsOur fire is now easier to ignite and the fire burns much hotter. Also we have no more smoke back draft into the room. Just what we needed!

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