Why Dry Firewood Matters for Clean and Efficient Heating
Ask any experienced masonry heater owner about the most critical factor for optimal performance, and you'll hear the same answer: dry firewood. Not the most expensive hardwood species, not the perfect fire-building technique, not even the most sophisticated heater design—dry firewood trumps everything else. Moisture content affects combustion temperature, efficiency, emissions, safety, and equipment longevity more than any other single variable. Understanding why dry firewood matters—and how to ensure yours meets the standard—transforms mediocre heating into exceptional performance. What "Dry" Actually Means When we say "dry firewood," we're talking about specific, measurable moisture content—not just wood that feels dry to the touch or has been sitting around for a while. The 18% Standard For optimal masonry heater performance, firewood moisture content must be below 18% on a wet-weight basis. Ideally, you're burning wood at 12-15% moisture content. Th...