Because a ventless fireplace does not have a fresh air intake vent the fire burns the oxygen in the room.
Cons of ventless gas fireplaces.
Air vapor is one of the natural by products of burning a fireplace and the vent free system releases it right back into the home raising the humidity.
Benefits of a ventless gas fireplace.
If the oxygen drops to an unhealthy low the oxygen detector will shut off the fireplace.
When people build a new house they are left with so many things to think about like what should be the paint color where should you hang all the paintings and what to install a vented or ventless gas fireplace when it comes to making a decision about the fireplace it is easy to see people getting confused.
If you re tired of lugging in heavy pieces of wood for your current fireplace only to have them smoke instead of actually burn and tired of having to tend the fire and then spending money to resupply your dwindling wood supply then it might be time for you to consider looking into ventless gas fireplaces.
In some areas this can be a good thing especially in dry or arid regions but for others it causes problems.
Unlike wood burning fireplaces ventless fireplaces produce no ash or air borne debris that can collect on furnishings and need to be cleaned up.
The cons one of the by products of combustion is water vapor and lack of a vent means this is circulated inside your home raising the humidity of the interior air.
Because of this ventless gas logs will introduce excess moisture into your home which can result in mold or mildew.
Last updated on december 1 2019.