Gas logs that burn clean and produce a hot blue flame are known as vent-free, unvented, ventless, or non-vented gas logs. These logs lack the aesthetic beauty of vented gas logs that burn with a natural yellow flame but burn much hotter and therefore produce more heat. Vent-free gas logs do not need a ventilation system to vent the products of combustion because the gas is fully burnt into heat.
Some vent-free gas log sets come with blowers that actually blow the heat directly into the room. Since the damper can be fully closed while in operation, no heat escapes through the fireplace. All vent-free gas logs come with an Oxygen Depletion Sensor which will immediately shut off the appliance if the oxygen level reaches 18%. Normal oxygen levels are 21%, and this feature that comes standard with every vent-free gas log set insures the safety of the appliance.
Vent-free gas logs are allowed no more than 40,000 BTUs. Although most vent-free gas logs are not approved for bed or bathroom use, those that are are limited to 10,000 and 6,000 BTUs respectively. The flame produced by these logs are extremely hot and even if the minimum required clearance is met, the mantle and surrounding walls may still be warm to the touch.
Vent-free gas logs can be installed in an existing fireplace although it is not required. Some homeowners without a fireplace choose to install the logs in vent-free fireboxes, much like prefab fireplace fireboxes, that have no connection to a chimney. The latter method is highly debated. Codes may change in the future regarding the legality of installing vent-free gas logs in prefab fireboxes, but this change would not affect units previously installed.
Propane and natural gas can be used to fuel a gas log set. When looking into buying a unit that uses natural gas or propane there are a few factors to weigh into the decision. First, natural gas is cheaper and more convenient. Because you can access natural gas with the flip of a switch it is easier to come by than propane, which has to be bought from a store and hauled home. Natural gas is also thought to burn cleaner and is generally safer. You may want to consider purchasing a
If I have gas logs do I still need to have my chimney swept?
When you have your fireplace serviced, whether you have a regular, open, wood burning fireplace, gas logs, or an insert, many things are being checked out. The flue is checked for combustibles, clearances are checked to be sure that they are up to code, and they evaluate floor protection. Basic installation methods are often not followed and a certified service technician will evaluate your system according to code standards.
It is very important, for safety’s sake, to determine which type of fireplace doors, spark arrestors, or other fireplace finisher is appropriate for the style of fireplace you have in your home. There are very modern versions available today in very different materials, styles, and general look. Adding fireplace glass doors, screens, or spark arrestors are can be great accents to any home.
When it comes to installing new gas logs, a new fireplace, or a whole new chimney altogether, it is very important that you “shop” around for the contractor that is going to fit your needs, your price, and your standards.
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