What is a Direct Vent Fireplace?

manufacturing industry

While a traditional fireplace provides an open burning chamber that vents through a chimney, a direct vent fireplace does not require a chimney, and can vent horizontally out a sidewall or vertically to the roof. The direct vent fireplace also has a completely enclosed chamber that is highly efficient, drawing in air for combustion from the outside and expelling gasses to the outside as well. The front glass enclosure is porous, allowing radiant heat to pass into the room. The direct vent fireplace heats a room without robbing it of oxygen or of the heated air it is providing, while also keeping it free of fumes and combustible materials such as embers or ash.

A direct vent fireplace can be a wonderful choice for rooms in which a traditional fireplace is not practical or possible. Aside from providing clean warmth and the cheery glow of real fire, a direct vent fireplace saves space by allowing furniture to be positioned directly to either side with "zero clearance." This simply means that while heat is radiated out the front glass, the sides are safe for combustibles to butt up against the firebox. A direct vent fireplace can also be optionally inset into a wall.

The venting system of a direct vent fireplace consists of a double-walled pipe, or pipe-within-a-pipe. The inner pipe provides venting to the outside, while the outer pipe carries outside air into the fireplace. As the outside air is sucked into the venting system, it's heated by the hot central venting pipe, improving efficiency. Though a direct vent fireplace does not require electricity, it does require a propane or natural gas pipeline for fuel and burns logs specifically made for direct vent models.

A direct vent fireplace can come in many configurations with various kits and trim. Some kits are designed to look like a traditional fireplace, complete with mantle, while others are more modern. Many direct vent fireplaces carry the certification of wall gas furnaces, and their flexibility makes them extremely popular. Prices vary depending on manufacturer, installation needs and model, but in general these fireplaces are far less expensive than installing a traditional fireplace, while providing many advantages.

If you've always wanted a fireplace but didn't think it was possible -- or considered the traditional fireplace too messy -- you might consider a direct vent fireplace. It could be just what your home needs for those crisp winter nights.

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9
I have the same problem with the cold air. What can be done?
- Garyj
8
Contact your fireplace supplier. Most manufacturers sell a device that is frequently called a *cold air enclosure kit*. It essentially is a sheet metal box that encapsulates the B vent where it meets the top of the fireplace unit. The side of this box has a 3" or 4" flexible duct that exhausts to the exterior of the building. This duct directs the cold air that drops down between the walls of the B vent to the exterior, rather than into the area around the fireplace. This device is required on all pre-fab fireplaces installed in Canada but is not required in the US.
- anon25326
7
I have cold air with frost on a Heat and Glo unit. Any suggestions?
- DoubleO
6
same problems as above, cold air coming into room, not from the damper in the fireplace. Any ideas for this?
- kecmp
4
I own an 8 year old home with a Heat & Glo direct vent gas fireplace. When the fireplace is not in use, there is a cold draft coming in from the grille at the bottom of the fireplace, under the fire box. What can I do about this? Stuff insulation under the fire box?
- draftyjersey
3
I have a serious draft in my fireplace feels as if I may as well have a window open in my living room. My developer is telling me this is normal, but it doesn't seem normal to have a large draft coming through. None of my neighbors have this problem. How can I battle this with them to get it repaired?
- anon15478
2
I have the same problem. What can be done about this?
- bhillgamyer
1
I have a direct vent gas fireplace (Montigo). When there is no fire burning I notice a significant heat loss. The room gets cold immediately around the fireplace. Is it more efficient to continually run the fireplace or to just live with the heat loss with the unit shutdown?
- lbunner

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