Wood burning stoves and pellet stoves differ in the fuel used, the amount of work required to operate, and in how the heat is produced. Wood burning stoves get very hot, stay hot for a long time, and are a burn hazard, especially with children. Pellet stoves don't get hot to touch, so burns are not a problem.
Pellet stoves burn small pellets that look like rabbit feed. Pellets are made from compacted sawdust, wood chips, bark and waste paper. Some pellet stoves can burn a variety of biomass fuels like shelled corn, soybeans, cherry pits or sunflowers. Pellets can be delivered or bought in sacks and stored in a basement.
Wood stoves burn hardwoods like oak, walnut and hickory. The wood must be cut to length to fit in the stove. It must be split and dried before using. Stack wood outdoors away from the house to avoid termites. Cover the top but leave the sides of the wood stack open so air can circulate to dry the wood.
Wood burning stoves must have a chimney or approved vent. There is no need for electricity unless the stove has a blower to circulate air around the hot firebox and into the room. Wood burners produce radiant heat.
Pellet stoves use a conventional flue. An auger powered by an electric motor moves pellets from the hopper on top into the stove. Filling the hopper with 40 pounds of pellets can heat a home for 40 hours, depending on the temperature setting and the size of the house.
Pellet stoves are usually self-igniting with the temperature controlled by a thermostat knob on the front of the stove. Empty the ash bin every few days and fill the hopper with pellets as needed.
Wood burning stoves are a lot more work. Cutting, splitting, stacking, hauling wood indoors, and the need for kindling (small sticks to start a fire) are some of the chores required. Ashes should be removed daily. You must physically start the fire. Wood burners are messy, adding time for cleaning and dusting.
A wood burning stove costs less than $1,000, as of 2010. They work without electricity, and so are good in case of power outage or in a remote area with no electrical service. As of 2010, Pellet stoves cost over $2,000 and require electrical power to work, adding to the cost of operation.
Wood burning stoves are less efficient, which means more of the heat goes up the chimney, especially older stoves. Older models produce as much as 40 grams of smoke per hour. Newer EPA certified models produce no more than 7.5 grams of smoke per hour. Use a carbon monoxide detector when burning wood.
Pellet emissions are so minimal that they are not regulated by the EPA.
Wood burning stoves are less expensive and work well if you are "off the grid," that is having no electricity because of a remote location or power loss after a storm. Because wood burners radiate heat, it is possible to cook on a wood burning stove.
Pellet stoves, while more expensive and needing electrical power to operate, are safer for the family, burn cleaner, make less of a mess and are less work to use.
Have the chimney and flue inspected and cleaned annually.