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    Ventless Gas Fireplace Inserts & Other Vent Free Inserts

    Ventless gas fireplace inserts are great. If you don't currently have a fireplace that works, one solution to a desire for a hearth is a ventless gas fireplace insert. These self-contained units don't require the installation of a chimney. Electric, propane, or natural gas, we have the correct vent free fireplace insert for them all! These systems are over 99% efficient and no heat will be lost while it is running. Find the right electric, natural gas, or propane ventless gas fireplace insert for you!
    Browse Vent Free Inserts

    With a vent free fireplace insert, every ounce of fuel is burned, heating your home. These are great additions to any home. If you don't have a masonry fireplace to put the insert into, there are also mantel cabinets specifically designed for ventless fireplace inserts that fit right along any wall!

    Feel free to contact our NFI certified technicians with any questions about ventless gas fireplace inserts or other inserts!

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    Vent Free Inserts Q&A with the NFI Certified Specialists

    * Please Note: All customer questions are answered by our NFI Certified Specialists free of charge!
    14 Questions & 14 Answers
    Thomas T
    February 9, 2022
    Who installs the fireplace inserts?
    1 Answer
    You can locate an NFI installer here. Enter your zip code and fuel. type.
    Submitted by: Kathy O. on February 9, 2022

    Derek D
    from Granbury, TX asked:
    December 31, 2021

    I see you recommend a propane tank larger than 5 gallons. What issues might I have when using a 5-gallon tank?

    1 Answer
    The problems with 5 gallon tanks are they are easy to run empty which leads to air in the lines which can take a very long time to get out of the system, the other issue is the small tanks can freeze the regulator up from high draw over short periods of time.
    Submitted by: Devon P. on December 31, 2021

    Marian W
    from Mt Jackon, VA asked:
    December 27, 2021
    Are there ventless fireplace inserts that act as heatalators?
    1 Answer
    There are not.
    Submitted by: Devon P. on December 28, 2021

    from Alexandria, VA asked:
    April 5, 2020
    Is it possible to install gas logs in to a modern wood burning stove?
    1 Answer
    Unfortunately, no. The combustion chamber and chimney would be too small. Additionally, wood stoves are made to retain heat inside the combustion chamber which would ultimately overheat the gas controls included with any gas log set, resulting in failure and a voided warranty.
    Submitted by: Will M. on April 6, 2020

    from San Diego asked:
    December 2, 2019
    Are there vent free insert options for a wood burning stove?
    1 Answer
    No, we do not have any vent-free inserts suitable for installation in a wood stove.
    Submitted by: Tyler M. - NFI Master Hearth Professional on December 3, 2019

    from Central City, PA asked:
    August 21, 2019

    How do you measure for an insert?

    1 Answer
    To determine the proper insert, you should measure the front width, rear width, depth, and height of your fireplace opening.
    Submitted by: Brennan W. on August 21, 2019

    from Allentown pat asked:
    February 13, 2018
    What is the difference between a vent free gas fireplace and a vented and what is needed for both
    1 Answer
    For details on the differences, pro and cons of direct vent vs. vent-free gas fireplaces, stoves and inserts, please refer to our Gas Fireplace and Stove Buying Guide.
    Submitted by: Tyler M. - NFI Master Hearth Professional on February 13, 2018

    from AZ asked:
    June 3, 2016
    Do vent free fireplaces need glass doors?
    1 Answer
    Almost all vent free fireplaces use a barrier screen only. Glass doors are usually not available, as they would impede heat transfer to the room.
    Submitted by: eFireplaceStore on June 3, 2016

    from NJ asked:
    November 2, 2015
    Do I need a flue in order to use a vent free fireplace insert?
    1 Answer
    Vent free systems are designed to provide a complete burn, eliminating the need for venting.
    Submitted by: Will M. on November 3, 2015

    from NC asked:
    January 3, 2015
    Do vent free fireplace inserts have a carbon monoxide sensor built into them?
    1 Answer
    While an oxygen depletion sensor is part of their standard construction, the units do not have a carbon monoxide system of any kind. It is recommended to install and maintain at least a couple of carbon monoxide detectors in any home that uses gas appliances.
    Submitted by: eFireplaceStore on January 5, 2015

    from Columbus, OH asked:
    September 18, 2013
    What is required to use "wellhead" natural gas in a vent free fireplace insert?
    1 Answer
    There is technically nothing separate that is required to operate an appliance on wellhead gas, however every manufacturer that I know of advises against it. Lack of odorants, possible impurities, and variation in BTU content are all concerns. To ensure safe operation, it is best to use only city supplied or treated and stabilized gas.
    Submitted by: Collin C. - NFI Master Hearth Professional on September 18, 2013

    from Idaho Falls, ID asked:
    February 10, 2013
    Are there elevation restrictions? Can vent free be operated as a primary heat source?
    1 Answer
    Vent free appliances have an elevation restriction of 4,500 feet. Due to the lack of oxygen, they suffer from frequent pilot outages at any higher elevation. These units must also only be used as a supplemental heat source. Because of oxygen depletion, the unit will eventually shut down if used as a primary heat source. I highly recommend the use of a direct vent appliance as a primary heat source and at higher elevations.
    Submitted by: Collin C. - NFI Master Hearth Professional on February 11, 2013

    Luis M
    from Atlanta asked:
    November 17, 2012
    What makes a vent free fireplace "vent free"? Does it need a sensor? Does it need an automatic shut off valve?
    1 Answer
    Vent free fireplaces are completely self contained. By using a lower output burner system, they are able to be used with no exhaust vent. These units will also have an oxygen depletion sensor that will close the gas valve, should oxygen levels in the room reach unsafe levels. These units make excellent supplemental heat sources when installed in large areas with plenty of circulation.
    Submitted by: Collin C. - NFI Master Hearth Professional on November 19, 2012

    November 9, 2012
    What is a millivolt control? Does the pilot light stay on all the time with a natural gas fireplace? Can you manually turn your fireplace off and on? Do you have to have a remote control or a thermostat?
    1 Answer
    A millivolt system has a small flame that generates power for the unit's gas valve to operate. As a result, they do not require outside power to operate and can be used in the event of a power outage. The only thing that would be rendered inoperable would be the blower, if applicable. Because of the amount of power the fan needs to operate, it cannot be used during a power outage. With a millivolt system, yes, the pilot will stay lit all the time with natural gas (or propane). You can indeed manually turn it off and on with the control knob. You can even turn it all the way off (extinguishing the pilot) if you wish, but you will have to re-light the pilot every time you want to operate the fireplace. Otherwise, it will go from fully operational back down to just the pilot light. The knob will have three options - "OFF", "PILOT", and "ON", indicating these three options. On almost all of our millivolt units, you can indeed purchase an optional hand-held remote control or a wall-mount thermostat. We also have hand-held remotes that feature thermostatic control.
    Submitted by: on November 9, 2012

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