Wood burners warm through radiant heat and many have a built-in or optional blower to help distribute heat more evenly over a larger area. Blowers help save fuel and increase the overall comfort level in the space being heated. Some models provide enough surface space to cook on and most provide an enjoyable view of the flame. Both wood and wood pellet burners burn wood, which is carbon neutral, making either choice better for the environment than natural gas or petroleum-burning heaters. Some newer wood burners include a catalytic combustor resulting in cleaner exhaust gases. Wood pellet burners operate at much lower temperatures, are often cool to the touch, and utilize a built-in blower to help warm a room.