Description Boiler 1 Cleaver Brooks model CB-900-200-150, year 1980. Rated at 150 horsepower. Fuel: natural gas and #4 oil. Boiler 2 Cleaver Brooks model CB-200-200-200#, year 1996. Rated at 200 horsepower. Fuel: #2 oil and natural gas. Boiler 3 Cleaver Brooks model CBW-200-200-150, year 1989. Rated at 150 horsepower. Fuel: natural gas and #2 oil.