How much do they cost?
Expect to pay $2,000 to $5,000 (including installation) for a heat-producing insert or built-in fireplace. Decorative log sets run about $400 to $1,000.
Natural gas or propane?
Gas fireplaces can burn either type. Natural gas is less expensive and produces about 5 percent more heat. Choose propane where natural gas isn't available.
DIY or hire a pro?
For the safest, most efficient, and best-looking installation, leave the work to a local National Fireplace Institute-certified technician.
How much care?
For about $150, have your certified technician come once a year to clean and adjust the burner, ensuring that you have realistic, soot-free flames.
How many Btus?
A gas fireplace's heat output, in Btus, should match your room size, climate, and your house's insulation level.