List of Top Suppliers of Boilers ( 2022 Update)

Top Suppliers of Boilers

Here is an in-depth look at the top suppliers of boilers, explaining some of their key features and why they have such a good reputation.

The boiler produces steam or hot liquid by heating water or another liquid under pressure. Different types of boilers are available for both commercial and residential uses, which can be classified according to their heating method, fuel type, and even the boiler axis (horizontal or vertical).

An HVAC professional has an obligation to assist those in need of a boiler. To ensure that you have high-quality boilers, you will need reliable and trustworthy Boilers Suppliers and Companies. In the U.S., you will find plenty of these manufacturers and suppliers, so finding one shouldn’t be hard. If you aren’t sure where to begin, you can browse through the companies listed here.

List of Top Boiler Manufacturers in the U.S.

In the following table, we list the 10-largest boiler manufacturers sorted by the number of employees. In addition to providing information on headquarters locations and annual sales, we have also provided a brief summary of each company. Annual sales are presented in million US dollars. Dashes indicate missing data.

CompanyHeadquartersAnnual Sales

Hurst Boiler and Welding Company, Inc.
Coolidge, GA


Indeck Power Equipment Co.
Wheeling, IL


Parker Boiler Co.Los Angeles, CA


Sussman Electric BoilersLong Island City, NY


Sigma ThermalMarietta, GA


Sioux CorporationBeresford, SD


Thermal SolutionsLancaster, PA


The Stutz Co.
Chicago, IL


Electro-Steam Generator Corp.

Rancocas, NJ


Ace HeatersCorona, CA


Hurst Boiler and Welding Company 

Based in Coolidge, GA, Hurst Boiler and Welding Company has been building vertical, tubed, low-emission, hybrid condensing steam and hot water boilers fueled by biomass, solid fuel, waste, coal, wood, gas, and oil since 1967. Hurst’s product line consists of packaged boilers, ranging from 6 to 2,000 horsepower, with pressures up to 450 PSI, as well as firetube, water tube, and feedwater equipment for all types of heating and process applications, including school, dry cleaning, hospitals, universities, military, and commercial/industrial facilities.

Indeck Power Equipment

Located in Wheeling, IL, Indeck Power Equipment offers steam boilers and high-temperature hot water generators for sale, rent, or lease, as well as custom boiler systems. In addition, it offers boiler parts and accessories.

Parker Boiler 

Parker Boiler manufactures steam boilers, condensing boilers, and hot water boilers in Los Angeles, CA; power burner boilers and water wall boilers are some of its products. Its boilers are available in capacities ranging from 3120 MBTU to 6800 MBTU.

Sussman Electric 

the company’s headquarters is Long Island City, New York. It provides electric steam boilers, electric hot water boilers, humidification systems, laboratory steam boilers, and high-pressure boilers. This company also manufactures steam super heaters, exchangers, and optional equipment for the steam boilers. They feature miniature steam generators with capacities of 3KW-9PPH, capable of producing steam at 5000 PPH and hot water at 9200 MBH.

Sigma Thermal

The company is based in Marietta, GA, and offers a variety of products, including high-pressure steam generators for oil deodorization, indirect steam generators, heaters, and thermal fluids systems. Furthermore, the company provides turnkey design and installation, maintenance, retrofitting, and parts.

Sioux Corporation 

Sioux Corporation is based in Beresford, SD. It is a manufacturer of low-pressure boilers, ready mixed concrete boilers, pressure washers, steam cleaners, chillers, heaters, and specialty products.  

Thermal Solutions 

Lancaster, Pennsylvania-based Thermal Solutions Products manufactures high-efficiency copper-finned boilers, including condensing and near condensing boilers, as well as hot water heaters. The company also makes packaged systems and accessories.

The Stutz Co. 

The Stutz Co. is based in Chicago, IL, and provides boilers for metal finishing applications. Aside from metal finishing machinery, it also offers plating tanks and barrels, chemicals, coating systems, filter systems, and coating systems.

Electro-Steam Generator 

Founded in Rancocas, NJ, Electro-Steam Generator Corp. provides standard and custom steam generators and electric boilers for general industrial applications. Among its customers are food manufacturers, beverage companies, and packaging enterprises.

Ace Heaters 

Ace Heaters is based in Corona, California, making unfired steam boilers, near condensing boilers, and water/heater boilers.  Ace Heaters also makes gas and indirect water heaters and accessories.

Top Suppliers of Boilers according to Consumer Reports 

The table below includes information on the 5-top consumer-rated boiler brands along with information on the company owning the brand and the location of its U.S. headquarters. Company sizes of the owner companies are ordered as descending in the table.

CompanyBrandHeadquarters in the U.S.
Lennox International Inc.Lennox International Inc.Richardson, TX
The Bosch GroupBoschFarmington Hills, MI
The Bosch GroupBuderusFarmington Hills, MI


PeerlessBoyertown, PA

Slant/Fin Boilers & BaseboardSlant/FinGreenvale, NY


The company is based in Richardson, Texas, and provides heating and cooling, air quality, and control products to the commercial and residential sectors.


As part of Bosch’s residential product line, it offers non-condensing boilers in gas and oil as well as condensing boilers and hot water and heating boilers. Its headquarters in Farmington Hills, MI, is the U.S. headquarters for the Bosch Group. 


Bosch also owns Buderus, a company that manufactures boilers for the commercial space. Among the company’s products are cast iron boilers, stainless steel condensing boilers, and boiler controls.

PB Heat LLC 

PB Heat offers gas, oil, and gas/oil combination boilers as well as boiler systems and water heaters for residential and commercial applications. Boyertown, Pennsylvania, is where the company is based.

Slant/Fin Boilers & Baseboard 

Based in Greenvale, NY, Slant/Fin Boilers & Baseboard offers electric, gas, gas-fired, and oil-fired boilers, as well as baseboard heaters.


The cold weather conditions can be very unpleasant when you’re in a place experiencing extreme temperature drops. Therefore, it is crucial that people find a solution to stop this situation. A boiler is one possible solution.

These people will turn to you as their first choice as an HVAC professional. Hence, it’s best if you’re ready to provide them with a boiler. Before you can accomplish that, you need to work with a reputable boiler manufacturer or wholesale supplier. As a result of this partnership, you can offer your customers boilers of the highest quality.

You are fortunate since the United States has so many manufacturers and suppliers of these products. We mentioned 15 companies above. You can start with these 15 if you’re just starting your search for a manufacturer or supplier. These companies have already established their name in the industry and gained loyal fan bases. In other words, choosing any of them will surely put you in good hands.

Our Boiler Experts in Linquip can provide you with specialized advice about the main considerations you should assess while choosing a boiler suited to your needs.

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