Vented  vs  Vent Free  Gas Logs -  What is the Difference?


Vented Gas LogsVented Gas Logs:

Great for ambience and aesthetics,  very decorative and realistic to wood burning. They are comparable to burning real wood  without the hassle of cleanup. You can recognize vented gas logs by its big full flames, big full color. You will see lots of yellow,  orange, and big ember beds. The flame dances all around the wood, through the logs, and over  the logs.  The vented logs look like they are engulfed in the flames. Most vented logs can also be repositioned to the users' liking. This makes the vented sets look far more realistic  

Now why are they called “vented”?  The Damper/flue must be open to exhaust the burnt gases through the chimney and radiant heat is projected out into the room. Think of radiant heat as if you’re standing outside and  the Sun is beaming down on you. So when you stand in front of vented gas logs,  you will feel the radiant heat hit you. Great to pull up a comfortable chair with a good book in front of the fireplace and not feel overwhelmed by heat,  but just comfy.


The majority of heat  goes up the chimney, thus it is similar to burning wood, but a bit more efficient then wood burning and just as realistic.

Also, vented logs can have glass doors on the fireplace.  The doors can be closed when you are Not operating the gas logs. If you wish to sit for long period of time in front of your fireplace for the ambience and for a comfy experince, we recommend vented gas logs


Vent Free gas logs: Vent Free Gas Logs


The vent free gas logs produced a tremendous amount of heat and that hot air comes straight out of the fireplace box into the room. It is not vented through the Chimney. Think of vent free gas logs as a furnace or heater.  It will heat your room very quickly.

Vent Free Gas Logs Positives:

 *  Super Clean burning gas logs - Toasty!  99.8% efficiency
 *  Lower purchase price considering it burns 99.8% of the fuel
 *  Consider it a furnace or space heater
 *  No Vent required,  the flue must be closed

Vent Free Gas Logs Considerations:

 *  There is no vent,  99.8% of the fuel is burned, but the remaining  two tenths of one percent remains

 *  Not as realistic as wood or vented gas logs, the logs must be positioned in a  predetermined location and not interfere with the flame
 *  Some measureable traces of chemical residues remaining in this exhaust, including carbon monoxide, which of course, is an odorless, colorless and tasteless poiso

*  Traces of various other chemicals besides the carbon monoxide do create a slight odor.

*  Check your fireplace manual to verify if it is approve for a  vent-free log set 

*  Installation is subject to state & local codes (some areas do not allow vent-free)  

*  All manufacturers recommend using vent-free only as supplemental heat and not as 24/7 primary heat.

The damper/flue is closed and  the  flames are not in physical contact with the logs, the flames come through cut-outs (between the logs).  so you will see 2 cut-outs,  or 3 cut-outs vent free gas logs sets.  The flame is designed for a specific pattern and must be installed in an approved vent free fireplace.   It is important to check your local fire codes, some states don’t allow vent free gas logs.

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      We strongly recommend installing Carbon Monoxide Detectors in any gas installation