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Do Gas Fireplaces Have a Chimney Flue?

Gas fireplaces have different venting options, including gas fireplaces with a chimney flue. Although you won’t need to contend with flammable creosote that is created by wood fires, annual chimney inspections are considered essential by leading fire safety experts. If, however, you opt for a direct-vent gas fireplace or a ventless appliance, the need for a traditional chimney flue is eliminated. Learn more below.

B Vent Fireplaces

chimney flue, danbury ctWhen you have a gas fireplace installed inside your masonry fireplace, it is known as a B vent fireplace or a natural vent gas fireplace. A new flue usually needs to be fitted for proper installation that follows the manufacturer’s guidelines. Various problems, including safety hazards, can occur if the flue is too large or small for the appliance.

For instance, if the flue is too large for the connector pipe, acids and chemicals could collect inside the flue during combustion. This creates a toxic environment that could erode the liner. Another problem if the flue is too large is that fires may not produce the amount of heat required to support a strong upward draft.

Since B vent fireplaces have a chimney flue, it is important to schedule annual chimney inspections. This is recommended by the Chimney Safety Institute of America (CSIA) as well as the National Fire Protection Association (NFPA).

Direct-Vent Fireplaces

If you have a direct-vent fireplace, instead of a chimney flue, a venting system is used that is easy to install and maintain. Highly efficient direct-vent fireplaces are vented through the exterior wall in closest proximity to the fireplace. With a direct-vent fireplace, outdoor air is pulled in and supplies plenty of oxygen for the flames. This helps to solve the common problem today that is associated with modern homes, which are usually sealed so tightly that combustion air for fireplaces is scarcely available.

Also, with a direct-vent fireplace, combustion gases are transported directly outside. The overall effect of the system is that indoor air is not affected in any way when you use the fireplace.

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Ventless Fireplaces

Another option is to have a ventless gas fireplace installed in your home. There is no flue nor is there any type of external ventilation with vent-free fireplaces. The air utilized for combustion is pulled from the home. The exhaust system in many modern automobiles uses catalytic converters, which is similar to the way a ventless fireplace works. As hot air exits the combustion chamber, it is cleaned.

Water vapor and carbon dioxide are primary ingredients in the combustion byproducts released by a ventless fireplace into the home. It is reportedly not harmful to inhale low concentrations of carbon dioxide. Due to the release of water vapors, a home with a ventless fireplace can have increased levels of humidity that heighten the risk of mold growth.

Ventless fireplaces are more affordable, easy to install and offer rapid provision of warmth.

Shop Gas Fireplaces at Yankee Doodle

Direct-vent, B vent, and ventless fireplaces are on display at Yankee Doodle in Wilton CT, making it easier to choose between the many different styles of gas fireplaces. If you don’t have a home with a chimney flue, that is not a problem. A direct-vent or ventless fireplace can be added to your home with no need for a chimney or flue liner. Speak with one of our friendly experts today by calling Yankee Doodle at 203-544-8111.