If you are shopping for gas logs for your fireplace, you will quickly discover there are two kinds of gas logs: vented and vent-free (also known as ventless or unvented). When choosing between the two types, you may hesitate from selecting vent-free gas logs because you have heard they are unsafe. However, this is not completely true. According to the VentFree Organization, a recent study of vent-free gas logs emissions are well within the recommended levels and guidelines for good indoor air quality. Bart Fireside would like to answer some of the most frequently asked questions about vent-free gas logs to help you decide whether this type of gas logs is right for you.


What are the dangers of carbon monoxide leaks into my house from vent-free logs?

Even in households with children, the elderly, and pregnant women, vent-free gas logs have passed tests to see if their carbon monoxide levels were within the recommended maximum levels as set by the U.S. Consumer Product Safety Commission (CPSC). Vent-free gas logs passed the tests with flying colors and are well within the CPSC recommendations. Of course, your home should have several carbon monoxide detection alarms installed on each level of your home and outside every bedroom.

Can I use vent-free gas logs to heat my entire house?

Approved to be used as supplemental heat only, all major building codes recommend that a primary heat source, like a furnace, be functional in the home before installing vent-less gas logs.

Are vent-free gas logs legal to use throughout the U.S.?

Legal to use in every state except for California, the International Residential Code (IRC) accepted the use of vent-free gas logs as a supplemental heating source in January 2006.

Do vent-free gas logs produce too much heat in tightly constricted homes?

You can easily control the heat output of your vent-free gas logs and set the heat to your desired comfort level. However, if your home is tightly constricted without much ventilation, Bart Fireside will follow the manufacturer’s instructions and all building code requirements to supply ventilation and combustion air. We may have to install additional mechanical ventilation as well.

Can I use my ceiling fan in the same room as my vent-free gas logs?

Yes, you can use a ceiling fan to distribute the heat around the room; however, you should ensure that the fan does not blow directly into the fireplace or cause drafts that alter the burner’s flame patterns, or you will end up with sooting.

What do I need to do to maintain my vent-free gas logs?

Every year, you should have your vent-free gas logs professionally cleaned and serviced. Bart Fireside can examine and adjust the oxygen and carbon monoxide monitors for safe and optimum performance.

Have more questions about vent-free gas logs? Contact Bart Fireside to ask us anything you would like to know about this safe and efficient supplemental heating source.