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Vent Free Gas Logs – Ventless Gas Fireplace Logs

Today ventless gas fireplace logs come with oxygen depletion sensors, to provide you much safer, less polluted, clean burning warmth.

Vent free gas logs have become exceptionally trendy in the past three years, and their sales in numbers are rapidly catching up with the sales of the vented logs.

Engineers researched to produce a yellow flame in an isolated environment, without compromising a clean burn and designed burner elements that emit a reduced amount of carbon monoxide in air.

As the name suggests they are “vent free”. That means they don’t require a chimney and hence the amount of heat produced is circulated within the confined place of your home.


1. Easy installation

Since the mechanism does not involve the installation of a chimney, the installation of Ventless Gas Fireplace Logs is a very easy, smooth process and can be erected almost anywhere.

2. Inexpensive Nature

Gone are the days, when you were required to collect the logs of costly firewood. Vent free gas logs come with their own sets of gas logs which cut down the costs significantly.

3. 100% energy efficiency

Ventless gas fireplace logs don’t require a chimney anymore as compared to other types of gas logs, which involve a chimney as their venting source, where almost 80 to 90% heat escapes Luckily, this issue is prevented in these systems.

4. Clean flame

Because of the specific burner elements present in the system, it is more controlled when it comes to burning. This controlled burning helps in producing clean, yellow flame burning of the gas logs.

5. Reduced Pollution

Due to the controlled burning, a less amount of carbon monoxide is released in the air, which is the byproduct of the combustion process. Reduced amount of carbon monoxide released means reduced pollution. Moreover, ventless gas logs certified by the American Gas Association (AGA) come with Oxygen Depletion Sensors (ODS).

These sensors can trace and identify the level of oxygen present in the room. If in case, the oxygen level in the room gets depleted beyond the marked level, then these sensors cut off the gas supply to the logs resulting in stand still of the system. Again if these sensors become defective due to any reasons, the system automatically switches over to safe mode where it cuts off the gas supply.

6. No ashes, sparks

Unlike their previous counterparts, there is a complete absence of any dirty ashes or dangerous flash and sparkles thanks to the presence of a spark screen.

7. Control Options

It gives you the option of an instant on and off. You can control the system by both ways- manual or remote.

8. There is no more creosote buildup, a thick yellow to brownish oily substance derived from wood tar or possibility of chimney fires.


Huge amounts of water vapor are produced by vent free gas logs. Approximately, it is estimated that 1.5 gallons of water is produced for every 100,000 BTUs of gas burned. As these systems burn around 30,000 BTUs per hour, you can imagine it requires them only 3 ½ hours to produce such an amount of water. In the case of vent free gas logs, these vapors can condense on windows and other cold surfaces present in the room which can create severe moisture problems. Hence, these products come with directions for leaving a window slightly open during use.

These systems are not permitted to be used in bedrooms or bathrooms. Certain states like California, Alaska, New York, Utah, Massachusetts, Colorado, Montana, and Minnesota still prohibit the use of ventless gas fireplace logs. Few municipalities in other states may also prohibit their use. It is your responsibility to check with your local building department prior to purchasing your set. Check for the AGA (American Gas Association) seal on the product and ensure that the manufacturer’s instructions are followed at the time of installation.