Gas Logs FAQ's

Expert answers to common questions about gas logs we receive. Whether you’re making the switch or looking for ideas you’ll find answers here.

Gas Log Sets tend to be the subject of many questions for homeowners browsing installations. That’s for a few reasons; whether it’s the differences between vented and ventless gas logs, the occasional ability to convert a wood-burning fireplace to a gas log set, or the lengthy accommodations required to install this affordable alternative to an electric fireplace.

Before browsing models, it’s important to understand exactly what you’re looking for in a gas log set, as there are multiple safety factors to consider. Here is a handy list of common questions and concerns from customers looking at gas log sets:

Can A Wood Burning Fireplace Be Converted To A Gas Log Set?

Converting your wood-burning fireplace to a gas log set-up hinges extensively on your current circumstances. For example, if your setup has a high-efficiency wood-burning unit, then you cannot install a gas log setup. However, if it’s as simple as installing gas logs into an existing fireplace—the odds (and price range) are better in your favor.

Installing gas logs into an existing fireplace (prefabricated or masonry) with a chimney presents fewer issues, as supply to the fireplace is most likely already available. On the off chance that the unit was not provided with gas supplies when first installed, you should enlist the services of a gas supply technician to run gas or propane to the fireplace.

Also, if you’re installing gas logs into a previously installed fireplace, note that you are required to remove the dampers that could stop the flow of exhaust from the fireplace to the kitchen. Similarly, you also must fix the flue vent permanently open. These steps are not optional, and they’re to ensure that the invisible fumes that gas logs give off don’t accidentally asphyxiate anyone inside the home.

Regardless of our current setup, however, be sure to check the manufacturer’s installation requirements before taking the initiative to install a gas log set. In the event of any uncertainty, be sure to contact a professional.

What are Gas Logs Made of?

The reason there’s so much confusion around gas logs is this: “gas log” is technically a misnomer.

Instead of being made of wood (like normal logs)—gas log sets are comprised of either cement or ceramic mixtures, chemically designed to accommodate the high temperature of a vented or ventless setup. Other modifications include steel reinforcements that increase the durability of the “logs”, giving it the ability to stand the test of time.

You may find that your gas log sets change color slightly over time. This is actually normal, as extended use can affect the appearance of a log set. Small price to pay for convenient gas flames.

What is the Difference Between Vented and Ventless Gas Log Sets?

Whether you go with a vented or ventless gas log depends on your priorities and limitations. That’s because a vented gas log, as the name implies, is hooked up to a venting system that pushes the chemical byproducts of combustion outside, while simultaneously pulling in cool air from outside the home.

Because of its hookup to a vent system, vented gas logs tend to run a higher cost of installation (especially if you need to install a new vent system). Another limitation of vented gas log sets is that they generally need to be installed in a chimney, or along an exterior wall.

A ventless gas log set, on the other hand, doesn’t require any attached ventilation system. This means that the air produced from a ventless installation is pushed back into the room—including the chemical byproducts of combustion; which could be hazardous for users with lung-based diseases, such as asthma or emphysema. Although the safety concerns are relatively marginal, they should be considered before buying a ventless product. In fact, certain states have placed limits or enhanced safety guidelines for the installation of ventless gas log sets.

Manufacturers have engineered vent-free units to burn hotter than vented units to burn away at least some of its chemical byproducts. This, combined with the fact that ventless units are technically more efficient than its vented counterparts (because no hot air is lost to ventilation during the combustion process)—is actually the upside of vent-free gas logs: more heat for your living space.

How Much Maintenance is Needed for a Gas Log Set?

Gas log sets require less maintenance than a traditional fireplace, as well as little cleaning. However, you should have the pipes and gas connections inspected periodically; in addition to the annual inspection conducted by a licensed professional. If you own a vented gas log, you should have your vent system or chimney inspected and cleaned once a year to remove any soot buildup.

Do Gas Logs Smell When They Burn?

Depending on the make, you may notice your gas log setup releasing an odor or some smoke during its first burn. If you’re running a direct vent setup, then this potential emission should escape through the vent system or chimney. We recommend that any rooms in which ventless gas log sets are first used should be ventilated. Lean on the safe side when first using your gas log setup.

What Is A Safety Pilot?

A safety pilot is a valve attached to the gas log setup that prevents improper leaks from the attached gas supply. If not for a safety pilot, there is the potential danger that a gas leak could pool up in the fireplace, which could interrupt the air quality or even lead to an explosion. Lucky for us, a safety pilot ensures that no flammable gases pass through the burner while the gas log set is turned off.

Can I Use a Propane Log Set In A Home With Natural Gas?

As it is with most gas log alterations—it all depends on your current setup! For instance, some vented gas logs can be converted from propane for natural gas use, depending on the make. You will need to purchase a gas conversion kit, which could run you as much as $200—but is overall cheaper than purchasing a new gas log setup overall. If you do choose to go this route, it’s imperative you only use a gas conversion kit approved by the manufacturer of the gas log set—anything else is unsafe. If for some reason you can’t find the manufacturer’s recommendation, it’s best to assume there is none, opposed to speculating on the safest conversion kit.

On the other hand, if you have a ventless gas log set—you cannot convert the propane set up to natural gas (or vice versa).

Also, note that the warranties that come with gas log sets only apply for the original fireplace the log set was installed in. Meaning: once you tinker with a gas log by attaching an adapter, the warranty is void. Even if the log set ceases to function for other reasons, such as extended use over time—the warranty for a converted gas log is void.

Can A Remote Control Be Added To A Gas Log Set?

Even after installation, it’s possible to add a remote to your gas log set. In fact, you could even equip your preexisting log set with variable flame and thermostatic controls, depending on the model and make.

What Size Gas Logs Should I Get?

Because gas log sets come in all sizes, it’s important to measure your fireplace beforehand. Using a tape measure, record the front width, rear width, depth, and height of the fireplace you aim to fill with a gas log set. Be sure to give an extra two inches, at the very least, on all sides of your new gas log set. If the gas log set you install is too large, you risk overheating your fireplace could cause considerable damage to your new gas log set, your fireplace, or your home—not to mention the danger posed to the occupants.

What Is A Manual Valve & Manual Safety Pilot Ignition?

A manual valve—sometimes referred to as a “key valve”, is a device located either next to or inside the firebox. Manual valves, used with match-lit ignition systems, are responsible for providing gas to the gas log.

A manual safety pilot ignition is a safety device that stays lit in order to provide constant gas to the system. Similar to the pilot on a water heater, a manual safety pilot ignition is to thank for our ability to start a controlled flame at a moment’s notice. Should the ever-present pilot ignition ever lose its tiny flame, the device is equipped with a safety system to automatically shut off the gas, thereby extinguishing any threat of a gas leak.

Looking For Your Next Fireplace?

Fireplace Deals’ inventory has dozens of gas log options for your perfect installation—whether you’re focused on a more efficient burn or having the most inviting centerpiece for your next family get-together. Send us an email or call 866-848-3473 to get in contact with one of our NFI-certified experts today. Browse our selection for more information or check out the rest of our Learning Center for more Homeowner Resources.