Important Things You Should Know When You Choose A Steam Boiler 

1. What fuel do you use 
such gas, diesel, heavy oil, electricity, coal, wood, biomass, palm kernel shells, coconuts shells
2. Thermal capacity, power by kw, kg, ton, hp, kcal, btu
3. Thermal efficiency
High thermal efficiency boiler will help energy saving, low consumption cost.
4. Control system requirements 
5. Water quality (boiler feed water quality)
Proper water treatment must be employed to avoid water quality-induced failures such as scaling, fouling, and corrosion.
6. Emission standards in local
Emission standards are the legal requirements governing air pollutants released into the atmosphere. Emission standards set quantitative limits on the permissible amount of specific air pollutants that may be released from specific sources over specific timeframes.
7. Transportation requirements, space limits