The cost of an industrial coal boiler depends on the size, efficiency, and type of coal boiler. Industrial coal boilers are the most common type of boiler for commercial or industrial applications. They are used in a variety of industries and can be used for steam or hot water generation. There are many factors to consider when choosing an industrial coal boiler, but the primary factor is how much heat you need to produce. For example, if your business requires 400,000 BTUs per hour (Btu/hr) then you will need to purchase a large boiler that can produce those levels of heat output consistently over time.