Hot Water Boilers

A reliable source for Industrial Boiler information and leading Industrial Boiler Companies & Manufacturers.

Hot water boilers are an important part in hydronics, the use of water as a heat-transfer medium in heating and cooling systems, because they heat the water that circulates through a series of pipes and into radiators, baseboards and other heat exchangers. Read Moreā€¦

Hot Water Boilers Hot water boilers are tanks or vessels that transfer thermal energy from a heat source to water that is then circulated to provide residential, commercial and industrial heating.

Leading Manufacturers

Schenectady, NY  |  518-344-7490

We strive for the best at Unilux Advanced Manufacturing LLC. Our boilers are designed with superior materials. We are proud to say that we produced the world's first UL/FE boiler and our units provide the highest levels of safety and accountability. Our systems feature large volumes of totally isolated positive circulation. Rest assured with our company and our 30 years of manufacturing experience! Contact us today!

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Unilux Advanced Manufacturing, LLC $$$

Pulaski, NY  |  315-298-5121

As the inventor of the vertical tubeless boiler, Fulton has a reputation for success dating back to 1949. We`re a global manufacturer of steam, hot water and hydronic boilers; thermal fluid heaters; custom engineered systems; and a full range of ancillary equipment. We continue to make advancements in the boiler market and are committed to improving life through heat transfer solutions.

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Fulton $$$

Coolidge, GA  |  877-994-8778

We are recognized as a leading manufacturing for condensing boilers. We adhere to the highest standards and we engineer the newest innovations. Our company produces a variety of boiler types that can be utilized for different applications. These systems are tested for optimum operating efficiency. These durable solutions are competitively priced and are second to none. When installing these units we will educate your staff with the proper procedures to ensure your investment will last for years.

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Hurst Boiler & Welding Company, Inc. $$$

Barberton, OH  |  330-753-4511

Babcock & Wilcox provides boilers ranging from small package boilers for commercial applications to large, high capacity utility boilers used to generate 1300 MW of electricity. We have the experience to burn virtually any fuel to produce steam efficiently, safely and reliably. Our products include drum boilers, fluidized bed boilers, once-through boilers, heaters and burners.

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Babcock & Wilcox $$$

Michigan City, IN  |  219-879-6561

Weil-McLain produces top-quality industrial and residential hot water boilers, steam boilers, gas fired boilers, oil fired boilers and electric boilers. We are the leading cast iron boiler manufacturer in the U.S. We offer them in five sizes from 80 to 310 MBH. Contact us with your needs.

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Weil-McLain $$$

Delanco, NJ  |  888-992-4134

Powerhouse Boiler Equipment sells, rents and services new & used boilers for all commercial and industrial needs. Our stock includes firetube, watertube, mobile and trailer-mounted boilers, available from 25 hp to 800 hp and 72,000 pph. Our boiler products can be delivered quickly across North and South America, and are used by business in a variety of industries.

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Powerhouse Boiler Equipment $$$
placeholder image Unilux Advanced Manufacturing, LLC Fulton Hurst Boiler & Welding Company, Inc. Babcock & Wilcox Weil-McLain Powerhouse Boiler Equipment

Hot water boilers are usually made from stainless steel, aluminum, cast iron or steel and are built to withstand high temperatures and pressure. A furnace along with heat exchangers and tubes is enclosed in a housing that provides a fireproof, well-ventilated, stable-air environment. Possible fuels include coal, wood or natural gas, though hot water boilers that run on electricity are also widely available. These appliances may be also be combi boilers, which do not have a hot water storage tank but instead draw in water as it is needed.

Unilux Hot Water Boiler Systems Hot Water Boiler Systems - Unilux Advanced Manufacturing, LLC

Depending on the application, commercial systems may add various substances to the water including chemicals to inhibit corrosion, prevent freezing, increase the boiling point of the water, improve leak detection and reduce bacteria and mold growth. They are used for commercial and industrial heating and circulation, tank heating, swimming pools, floor and baseboard residential heating and water source heat pumps.

There are two main ways boilers heat water: fire-tube or water-tube. Fire-tube boilers direct the heat produced from burning fuel through heat exchanging tubes that are immersed in water. Heat moves from high to low temperatures so the water around the tubes becomes hot. Water-tube boilers are different in that there is water inside the tubes that circulates as the tubes are heated from the outside. The hot water is then moved by one of three ways. Gravity flow heating systems are the oldest, simplest and least efficient technique. Water is circulated due to the thermal differences between hot and cold water; water expands as it is heated so it travels through the pipes and displaces the cooler water.

A pumped water system uses the same principles as gravity flow but is aided by use of a pump that circulates the water faster to produce a more controllable room temperature. Baseboard heating also relies on radiant heat, the heat that is released from hot pipes in the system. The main difference is that radiators are replaced with enclosed metal fins installed in the baseboards to distribute warm air at floor level. As the hot air rises it displaces cooler air and warms the room.

Hot Water Boilers Informational Video