Yes, a longer flue generally draws better. A taller chimney creates a stronger vacuum effect, relying on the principle that the column of hot air inside weighs less than the cold air outside, which pulls fresh oxygen into the fire and safely pushes exhaust up.
The 3-2-10 rule is a vital building and fire safety standard used to determine the correct height of a chimney. It ensures proper draft (so smoke and toxic gases exit the home rather than back-drafting) and lowers the risk of roof fires.
How can I make my chimney draw better?
Contrary to popular opinion, the hardwood's, like oak and poplar, created MORE creosote than the softwoods, like tamarack and pine. The reason for this, is that if the softwoods are dry, they create a hotter, more intense fire. The draft created by the hotter fire moves the air up the chimney faster!
You can increase your size as needed, using an adaptor, but not the other way around. For example, you couldn't, connect a 5 inch liner to a 6 inch outlet as this will prevent gases from being properly drawn up the flue, but you could connect a 7 inch liner (using an adaptor) to a 6 inch outlet.
The main issue with chimney height has to do with draft. If the chimney is not tall enough, your fireplace will suffer from inadequate draft and not function properly or safely. The column of rising hot gases inside your chimney will not be able to develop a safe and adequate draft.
A fully open damper allows maximum airflow, making the fire burn hotter and faster. If you want a slower burn or a fire that lasts longer, you can partially close the damper to reduce the oxygen supply. Just be careful not to close it too much because it can lead to poor combustion and smoke buildup.
The worst firewood to burn falls into two categories: toxic and highly inefficient. You should never burn wood that produces dangerous chemical fumes or excessive smoke, nor wood that burns too quickly or spits hazardous sparks.
However, if you have a smaller fire pit (less than 3 feet in diameter), you may only need 2-3 logs per hour. Conversely, for larger fire pits (over 4 feet in diameter) or if you're aiming for a roaring fire, you might need 5-6 logs per hour.
We don't recommend adding wood to a duraflame® fire. When you add other materials to the firelog, it can change the characteristics of the burn.
Burning wet wood has two negative consequences:
Your fire will smoke more, causing creosote build up in your stove and chimney. Your wood will burn less efficiently, costing you more to create the same amount of heat.
A chimney not drawing means there isn't enough upward airflow (draft) to pull smoke and combustion gases out of your home. This typically happens for a few common reasons:
Yes, mice absolutely can and do come down chimneys, utilizing them as warm, sheltered, and vertical pathways to enter homes. Mice are excellent climbers that can scale the exterior brickwork, enter through gaps or cracks, and move down the flue into the fireplace or attic.
The "7 Times Rule" for chimneys dictates that the cross-sectional area of a masonry chimney flue cannot exceed seven times the area of the appliance’s vent connector (draft hood outlet) to ensure proper drafting and prevent acidic condensation. If the chimney is too large, it must be relined to prevent damage from cooling gases.
The biggest mistake? Using logs that simply aren't dry enough. Firewood with high moisture content produces more smoke, less heat and leaves behind sticky tar (creosote) in your flue and burner. It also makes lighting your fire harder, wastes energy and can even damage your stove.
No, Duraflame logs do not produce the hardened, tar-like creosote associated with burning real cordwood.
Some deciduous trees also don't make good firewood. Aspen, basswood and willow trees all have very soft wood of generally poor quality for burning and producing heat. That said, this wood is a little better than that of most coniferous trees because it doesn't spark as much.
Best Long-Lasting
Cord: A full cord measures 4 feet high, 4 feet wide, and 8 feet long, totaling 128 cubic feet. Face Cord (Rick): A face cord or rick typically measures 4 feet high by 8 feet long, with depth varying based on log length, usually around one-third of a full cord. Regional Differences: The term rick may vary by location.
How long to cut firewood depends on your specific needs, but here's the quick answer:
For a Hotter Fire
Fully open the damper to maximize airflow. It provides ample oxygen to the fire, resulting in a more intense and hotter burn.