How to use this result
Use measured load and realistic seasonal efficiency assumptions where available.
Simple payback
Financing, degradation, maintenance and fuel-price changes are not modelled.
Condensing performance
Return-water temperature and controls can affect condensing savings.
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.