Gas logs are a popular and energy-efficient way to convert a wood-burning fireplace to gas fuel. Gas logs are also less expensive than gas fireplace inserts, and these logs require less time to install as well. Providing a no-hassle roaring fire, some sets of gas logs are so convenient that you can adjust the flame and its heat output with a remote controller. In the past, gas fireplace logs looked so unrealistic that no one was tricked into believing he was looking at a wood-burning fire. Forget those plastic-looking logs from the 1970’s! When you see a fire burning using the gas log sets you will find at American Chimney & Masonry, you may have to remind yourself that you are not watching flaming logs of wood. We would like to tell you more about the different sets of gas logs and how they can heat your house with some help from the experts at the Chimney Institute of America (CSIA).


The most important thing to know when you are shopping for gas logs is there are two different types of this heating appliance:

1. vented gas logs

Also known as “yellow flame gas logs,” you must have a working chimney that has been approved to use gas to have this type of log installed in your fireplace. Producing a beautiful and realistic-looking fire, the flame of vented gas logs is often mistaken as a wood-burning fire. However, the heat output of this type of gas log is also comparable to a wood-fueled fire as part of it exits through the chimney, so it is not as warm as the other type of gas logs. Furthermore, because your chimney vents out by-products like soot and carbon out via the chimney, the CSIA recommends you have your chimney swept annually as proper and safe maintenance.

2. vent-free gas logs

If you have heard the term “blue flame gas logs,” it refers to the other type of gas log set. Known as “vent-free,” this type of gas log needs no ventilation and can be installed almost anywhere in your home, as long as it meets the codes of your town. It is particularly important to abide by your local codes if you want to use vent-free logs for supplemental heating of your home. In certain parts of the country, you cannot legally use this gas log set, due to the effects it could have on the indoor air quality of your house when the logs are used for an extended period of time. Another thing to consider with vent-free logs lies with the fact their byproducts from burning these logs is carbon dioxide and water vapor. This causes excess moisture in your home, which can cause mold and mildew. Because of these issues, we at American Chimney & Masonry recommend you go with vented gas logs over the vent-free versions.

If you have any more questions about gas logs and which type is right for your home, contact American Chimney & Masonry today. Our knowledgeable staff is ready to assist you in choosing your perfect set of gas logs.

Our Portland Service Area

Located right here in Portland, Oregon, our chimney sweep technicians provide the best in chimney cleaning, fireplace installation and dryer vent care in the Greater Portland-Metro area. From North Portland down to Tualatin and Oregon City in the south, from Pleasant Valley in the east to Beaverton and Sherwood in the west – when it comes to your chimney, fireplace and vents, we hope you’ll call American Chimney & Masonry!

Ready To Make An Appointment?

To schedule an appointment with one of our expert technicians, please call 503-644-0393 or fill out our online scheduling form. With over 19,000 satisfied customers since 1989, we are ready for more! We look forward to visiting with you soon about your fireplace and chimney sweep needs.

Call Now