Boiler Heating Systems in Denver

The two general categories for heaters include steam boilers and hot water boilers. It is these two types of units that provide heat for your home and office. The operating principles are similar for both types of heaters. Each system involves the heating of water and creation of steam through the burning of fuel. Heated water is transported through boiler tubes, while steam is circulated through the building with the assistance of radiators.

While both types boiler heating systems operate using similar principles, their applications are different. Hot water boilers, also called hydronic heating boilers, are primarily used in heating applications. These heaters operate at a lower temperature than steam boilers, typically between 180 and 200 degrees. Hot water boilers are also noted to offer a greater degree of efficiency and produce more heat when compared to steam boilers. Hot water boilers also differ from steam boilers in that they must continually be filled with water and require a motorized pump to circulate the water. The operating pressures for hot water boilers are generally 30 to 125 psig (pounds per square inch gauge).


Steam boilers are based on an old convection heating technology dating back over 200 years. Steam boilers operate at a higher temperature than hot water boilers, which makes them less efficient than their counterparts. They typically operate at around 212 degrees. Steam boilers are designed for both low-pressure and high-pressure applications. The low-pressure boilers are limited to 15 psig, and are typically used for heating applications. High-pressure steam boilers are generally used for process loads and have an operating pressure of 16 psig to more than 1,000 psig. Steam boilers boiler heating systems are found more in commercial and industrial environments due to their design.

For more information on both hot water boilers and steam boilers in Denver or the surrounding areas, call Apple Aire at (303) 733-2813.

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