TOH Tested: Chainsaws

Some tree species give off more heat when burned—expressed in British Thermal Units (Btus)—than others. The higher the number, the hotter the fire. Here's how some of the best common firewoods stack up.

Red Oak: 7,013 Btus per pound
Hard Maple: 7,012 Btus per pound
Hickory: 6,999 Btus per pound
White Ash: 6,998 Btus per pound
White Oak: 6,991 Btus per pound
Black Locust: 6,989 Btus per pound