How Wood Bricks Burn with Firewood (Video)

Wood bricks can be used alone or as a supplement to firewood in a wood stove. This video is comprised of a series of clips filmed over 75 minutes. A smoldering piece of mostly burned-through firewood is in the back, with three Cleanfire Wood Bricks stacked in front. There is no kindling or assistance needed, due to the already hot firewood ash bed.

It’s important to remember that whether used alone or with firewood – wood stoves should not be packed tight with wood bricks. Don’t be fooled by their size. Wood bricks pack a super hot punch – which can damage a stove if used incorrectly. We recommend testing brick and/or brick+firewood burning variations to find the best fit for your stove.

Cleanfire Wood Bricks are designed to release as much heat as possible when they burn. When anything burns, the energy is released as heat and light. Bricks release much more energy as heat instead of light, which maximizes the heat output generated. Therefore, the larger and brighter visible flames from firewood is basically wasted energy when it comes to heating. After some time burning, the bricks expand, the flame lessens, and high amounts of heat is released.

If you are used to seeing the larger flames firewood typically generates – it can be surprising to feel how much heat comes off burning bricks with a smaller flame.  Cleanfire Wood Bricks burn at up to 8000 BTUs/lb – much more efficient than air dried cord wood which typically burns at 6500 BTU/lb.

Take a look at the flame/light comparison below.

Comparison of firewood flames and heat vs. wood brick flames and heat.

Why switch from firewood to Cleanfire Wood Bricks?

Convenience: Firewood requires too much work. Typically, wood is dumped on your lawn or driveway. Then the moving, stacking (and sometimes splitting) follows. Even more time and effort is added if you have to season your logs before use. Cleanfire Wood Bricks, on the other hand, come packaged in shrink-wrapped bundles with handles (15 bricks per bundle), on a one-ton pallet. You may store them right on the pallet, or move these stackable bundles inside your garage or basement.

Cleanliness: Wood bricks are environmentally clean, and also clean for your home. Unlike firewood, which can have up to high amounts of bark, mold, and unwanted insects – Cleanfire Wood Bricks are completely bark-free, mold-free, and bug-free. Wood chips, sawdust and natural lignin are the only components in the kiln-fired bricks, which means there is no chance for insects to make homes in them.

Consistency: Even with the more expensive kiln-dried or pre-seasoned firewood, burn time and heat output can vary due to size and wood type/age inconsistencies. Compressed wood bricks are dried and pressed in a mold, making a uniform shape which makes for consistent burn times. Firewood has many variables (seasoned vs. non-seasoned, wood type, size, kiln-dried vs non-kiln-dried, etc.) so the BTU level can be hard to predict. Furthermore, in order to burn properly, wood should be between 15 and 20 percent moisture – which can take a full year of proper storage to achieve.  Bricks are dried to less than 10% moisture before packaging. They are ready to burn as soon as you receive them.

Cleanfire Wood Bricks are sold exclusively by! Call 1-800-735-5387 to speak to an expert.


Pricing and availability varies by region.

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