California Energy Code - (doors and air)
National Green Building Standard
2008 California Green Building Standards only a direct-vent sealed-combustion gas or
sealed wood-burning fireplace
Leed - no masonry fireplaces
Minnesota Energy Code and Issues - tight houses - lots of links.
Comment on the Proposed Minnesota Energy Code
New Mexico Energy Code - One fireplace per residence allowed provided ???
New York State Building Code - Doors, tight-fitting dampers and combustion air.
Washington State Building Code - doors and air.