Experience cleaner, longer-lasting heat with Firewood Central’s Envi 8 Blocks by Bio-Diversity —your smart, sustainable fuel solution!

Key Product Features

Clean & Efficient Burning – Made from 100% kiln-dried hardwood sawdust with an ultra-low 8% moisture content, Envi Blocks burn hotter and longer with minimal ash and virtually no creosote buildup. Enjoy a cleaner, more efficient fire with less maintenance for your fireplace, stove, or wood furnace.
Chemical-Free & Pure Hardwood Fuel – Free from additives, binders, and chemicals, these compressed hardwood blocks provide a clean, toxin-free burn without harmful emissions. No dirt, bugs, bark, or debris—just pure, high-density sawdust for a reliable and consistent burn every time.
Eco-Friendly & Carbon Neutral – Made from reclaimed hardwood sawdust that would otherwise go to waste, Envi Blocks are a sustainable heating solution. Reduce your carbon footprint with this renewable alternative to traditional firewood and fossil fuels.
Versatile & Long-Lasting Heat – Perfect for indoor and outdoor use in for fireplaces, fire pits, stoves, and furnaces. Each block burns 7–9 hours in controlled stoves with dampened airflow or 1–2 hours in open-air fireplaces and fire pits.
Compact, Mess-Free & Easy to Store – Say goodbye to firewood mess! Envi Blocks come in neatly stacked bundles of 6, eliminating dirt, bugs, and bark. Their uniform shape allows for easy storage and handling, making them a hassle-free heating solution for any home.

Firewood Central Envi Blocks by Bio-Diversity, LLC are eco-friendly, clean-burning fire blocks made from 100% kiln-dried hardwood sawdust with no additives or chemicals. With just 8% moisture content, they deliver high heat output, minimal ash, and reduced creosote buildup for easier chimney maintenance. Their dense, compressed design provides long burn times—7 to 9 hours in controlled stoves or 1 to 2 hours in open-air fireplaces or fire pits—offering efficient, cost-effective heating. Carbon-neutral and made from recycled hardwood, Envi Blocks support sustainable living without sacrificing performance. Ideal for fireplaces, wood stoves, fire pits, and furnaces, they come packaged in stackable, mess-free bundles free from bark, bugs, and dirt for easy storage and handling.