For many homeowners, fireplaces have become the nice china of home features: dusted off only for special occasions. Although attractive, they are messy to operate, and that homey glow they produce sends heat right up the chimney as the fire sucks warm air from the rest of the house. Fortunately, homeowners have more options than ever to get more use and heat from the fireplace. Options range from a simple blower system that costs less than $1,000 to wood-burning inserts that can cost more than $5,000 but can heat an entire home. Homeowners seeking to add some heat to their fireplace must start with two choices: Do they want an insert? And what fuel do they prefer? More