How to use this result
Use consistent heat and fuel-price units.
Seasonal performance
Nameplate efficiency may not equal seasonal plant efficiency.
Sizing
This calculator does not size a boiler or determine load.
Important: Costs, utility rates, permits, inspections, environmental duties, health requirements, safety rules and equipment standards vary by country, province or state, municipality, building use, equipment type and project scope. Qualified local professionals and the authority having jurisdiction must determine what applies. Boilers involve combustion, fuel, electricity, hot water or steam, pressure equipment, venting and potentially lethal hazards. Only qualified and authorized professionals may design, install, inspect, service or operate regulated equipment.