Posted by Harold Kestenholz - Hydronic Network on March 03, 2001 at 15:14:34:
In Reply to: Contractor to install new Steam Boiler posted by Steve Mironov on March 03, 2001 at 10:59:59:
Since 1990, manufactured steam boilers had to be a minimum of 78% efficient. A coal boiler converted to gas usually was about 40% efficient; so the change will cut the gas bill in half with the least efficient stem boiler.