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Description 32 Manufacturers
Weil-McLain
Velocity Boiler Works
Trebor International, Inc.
ThermOmegaTech, Inc.
the Reinders Corporation
Stuppy Greenhouse
SONNIGER S.A.
Sellers Manufacturing Company
Reventon Group Sp. z o.o.
ProSonix, LLC
Process Technology
Omega Engineering, Inc.

32 Hot Water Heater Manufacturers in 2024

This section provides an overview for hot water heaters as well as their applications and principles. Also, please take a look at the list of 32 hot water heater manufacturers and their company rankings. Here are the top-ranked hot water heater companies as of November, 2024: 1.Hydro-Thermal Corp., 2.Daxom, 3.NES Ltd.

Table of Contents

What Is a Hot Water Heater?

In a greenhouse, a hot water heater is a system that heats the space by circulating hot water through pipes installed within the greenhouse. This water is heated by a boiler or similar device, and the rising warm air from the hot water creates a stable, uniform heating environment.

Uses of Hot Water Heaters

Hot water heaters are commonly used in greenhouses for high-value crops like orchids and greenhouse melons, where precise temperature and humidity control are crucial. However, they are less suitable for crops like strawberries and tomatoes that do not benefit as much from this type of heating.

Due to their high equipment costs, hot water heaters are typically used in larger facilities or for crops that command higher market prices.

Characteristics of Hot Water Heaters

Advantages

1. Temperature and Humidity Control: Hot water heaters can maintain moderate humidity levels and gradual temperature changes, ensuring uniform growth of crops.

2. Reduced Air Current Impact: The gentle airflow produced by hot water heaters minimizes the impact on sensitive crops.

3. Residual Heat: These heaters retain a significant amount of heat, providing temperature stability even in the case of equipment failure.

Disadvantages

The primary disadvantage is the high initial cost, making it an investment that needs careful consideration based on the expected return and the size of the facility.

Types of Hot Water Heaters

Hot water heaters can be categorized based on their fuel source:

1. Fossil Fuel-Based Heaters:

These heaters use fossil fuels like oil and are known for their high energy efficiency and ease of storage and transportation. However, the rising costs of fossil fuels and environmental concerns are shifting the preference towards biomass-fueled heaters.

2. Biomass-Fueled Heaters:

Biomass heaters, using renewable resources like wood chips, help reduce carbon dioxide emissions and can be a cost-effective alternative.

How to Select a Hot Water Heater

When selecting a hot water heater, consider the optimum temperatures for both crop growth and insect activity, especially when insects are used for pollination or as natural predators. It's also important to weigh the initial investment against the potential returns from the crops being cultivated.

List of 32 Hot Water Heater Manufacturers

*Including some distributors, etc.

Sort by Features

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  • Company Size: largest first
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    • Omega Engineering, Inc.
      • United States of America Address: 800 Connecticut Ave. Suite 5N01, Norwalk, Connecticut, United States of America

      Manufacturer Overview

      OMEGA Engineering Inc., founded in Norwalk, CT, in 1962 is a manufacturer of products used to measure temperature and humidity, flow and level, and pressure. The company's product portfolio includes thermocouple probes and assemblies, pressure gauges and switches, and air velocity measurement systems, wireless systems and portable optic sensors. The company serves markets including Automotive and Electric Vehicles, Renewable Energy and Energy Storage and Electronics and IT Infrastructure. The company also offers customer services that include support, custom research projects and customized services.

    • Heat Exchange & Transfer, Inc.
      • United States of America Address: 500 Superior St, Carnegie, Pennsylvania, United States of America

      Manufacturer Overview

      Heat Exchange and Transfer, Inc. was founded in 1968 and is headquartered in Carnegie, Pennsylvania. The company is a designer and manufacturer of custom, made-to-order heat transfer systems, serving industries such as aerospace, automotive, textiles, pharmaceuticals, and packaging. The company’s two product divisions are Direct Heating and Indirect Heating of Process Equipment. Direct Heating includes open coil heaters, flanged immersion heaters, unitary storage tank heaters, and stand-alone circulation heaters. Indirect Heating of Process Equipment includes extruders, mixers, ovens, dryers, and other equipment and machinery.

    • ThermOmegaTech, Inc.
      • United States of America Address: 353 Ivyland Rd. Warminster, Pennsylvania, United States of America

      Manufacturer Overview

      ThermOmega Tech, Inc. was founded in 1983 with valves featuring thermal actuator technology, offering freeze protection for railroad industry valves. The company has since grown to serve factory manufacturing, water management, aerospace, and other industries. The company’s current product line of valves and equipment includes specialty purpose valves such as scald protection and freeze protection valves, temperature-controlled water delivery systems, emergency shut-off valves, and protection valves, to standard water control valves.

    • Gaumer Process INC.
      • United States of America Address: 13616 HEMPSTEAD ROAD · HOUSTON, Texas, United States of America

      Manufacturer Overview

      Gamer Process was founded in 1962 and is headquartered in Houston, Texas. The ISO 9001 registered company is an electric heater manufacturer, providing engineering, design, and manufacturing of heating equipment and systems including control panels, liquid fuel conditioning, pumping, and other engineered systems for industrial, paper, marine, aeronautics, and defense industries. Some of the company’s heating solutions include indirect electric heaters, duct heaters, and process immersion heaters. The company’s non-heating solutions include pressure reduction stations, fuel gas scrubbers, and ammonia unloading stations.

    • Mokon
      • United States of America Address: 2150 Elmwood Avenue, Buffalo, New York, United States of America

      Manufacturer Overview

      Mokon is an American liquid temperature control systems manufacturer that was established in Buffalo, New York in 1955. The company produces heat transfer oil and water temperature control systems, as well as central and portable chillers. It also offers pumping tanks and stations, blown film coolers, and inline heating and cooling skid packages. Aside from its own products, the company provides maintenance products, as well as engineered and pre-engineered control panels for unique projects.

    • Velocity Boiler Works
      • United States of America Address: 3633 I Street, Philadelphia, Pennsylvania, United States of America

      Manufacturer Overview

      Velocity Boiler Works is a manufacturer of hydronic heating technologies. It was founded in 2002 in Philadelphia, Pennsylvania, USA. The company designs products for residential, commercial, and industrial applications. The product portfolio includes gas-fired and oil-fired boilers, condensing boilers, and combination units. The boilers are built to provide optimal heating efficiency, precise temperature control, and consistent performance, ensuring smooth operation and reduced energy consumption. The company's loyalty extends to providing product manuals and technical support, ensuring a holistic customer experience.

    • ProSonix, LLC
      • United States of America Address: 11411 W. Theodore Trecker Way Milwaukee, Wisconsin, United States of America

      Manufacturer Overview

      ProSonix, LLC, founded in 2007, operates as a manufacturer and provider of process heating solutions. Based in the United States, the company specializes in steam injection heating systems and liquid heating technologies. It serves diverse industries, including oil and gas, chemical processing, power plant & boiler operation, pulp & paper, food and beverage production, among others. The company's cutting-edge solutions optimize heating processes, ensuring efficiency and cost savings for its clients.

    • Armstrong International, Inc.
      • United States of America Address: 816 Maple St. Three Rivers, Michigan, United States of America

      Manufacturer Overview

      Armstrong International Inc., founded in 1900, is an American manufacturer based in Three Rivers, Michigan, engaging in thermal utility management. The company develops a range of technologies for thermal utility management, steam monitoring, and hot water temperature control. These solutions are augmented with platforms for documentation, enabling the detection of potential losses and savings on average per year. These products cater to various industries, including food and beverage, hydrocarbon and chemical processing, and data centers.

    • Agra Tech, Inc.
      • United States of America Address: 2131 Piedmont Way, Pittsburg, California, United States of America

      Manufacturer Overview

      Agra Tech, Inc. is an American manufacturer of standard as well as custom commercial-grade greenhouses and greenhouse products established in 1973 and based in Pittsburg, California. The company produces various standard as well as custom greenhouse designs, including retractable shade houses, sawtooth, and tunnel models. It also offers accessories and equipment such as heating and cooling systems, PC8 glazing, and energy curtains. The company primarily serves clients in research and educational institutions, as well as in agricultural, retail, and horticultural sectors.

    • BioTherm Solutions
      • United States of America Address: Sonoma County, 476 Primero Court, Cotati, California, United States of America

      Manufacturer Overview

      BioTherm is an American manufacturer of climate control systems for greenhouses established in 1980 and based in Cotati, California. The company produces irrigation, heating, and air quality management systems and components for greenhouses. Its products include flood floor systems, standalone dehumidifiers, fin pipes, and tubing of floor or in-bench heating. Aside from its products, the company also offers design, installation, repair, and maintenance services for customers needing additional assistance. It primarily serves clients in education, research, and horticulture.

    • Weil-McLain
      • United States of America Address: 999 McClintock Drive Suite 200 Burr Ridge, Illinois, United States of America

      Company Overview

      Weil-McLain, established in 1881 and based in Burr Ridge, Illinois, USA is a manufacturer of hydronic comfort heating systems. The company designs and manufactures hydronic heating systems for residential, commercial and industrial set-ups. The company’s products are largely used by engineers, distributors, facility managers, contractors and architects. The company custom designs and manufactures commercial boilers, residential boilers, hydronic baseboards, and indirect-fired water heaters. The products are installed in offices, schools, homes, hotels and churches. Founded by Isadora and Benjamin Weil and originally known as Weil Brothers, this company produces safe, sturdy and technologically superior products.

    • Hydro-Thermal Corp.
      • United States of America Address: 400 Pilot Court, Waukesha, Wisconsin, United States of America

      Company Overview

      Hydro-Thermal Corporation, founded in 1984 in the United States, is a manufacturer and supplier of advanced heating solutions and systems. The company’s product portfolio encompasses new steam heating, heating skids, and direct steam injection technologies. These cutting-edge solutions cater to various industries, including food and beverage, pulp and paper, and chemical processing. Hydro-Thermal's efficiency and sustainability are evident in their energy-efficient products that reduce energy consumption and operational costs for their customers. With the aim of enhancing process performance and productivity, Hydro-Thermal Corporation continues to be a good player in the heating technological industries.

    • Stuppy Greenhouse
      • United States of America Address: 1212 Clay Street, North Kansas City, Montana, United States of America

      Company Overview

      Stuppy Greenhouse is an American manufacturer and distributor of custom greenhouse systems and structures established in 1873 in North Kansas City, Missouri. The company produces greenhouse structures that can be customized for agriculture, horticulture, retail, or research purposes. It also offers aquaponic systems, standard and custom shade systems, and hydronic heating systems for controlling soil temperature, as well as related equipment such as energy/thermal curtains, rockwool plugs, and water testing kits.

    • Trebor International, Inc.
      • United States of America Address: A Unit of IDEX Corporation, 8100 South 1300 West, West Jordan, Utah, United States of America

      Company Overview

      Trebor provides high purity fluid transfer solutions for applications in the manufacture of semiconductors, LEDs, chemicals, solar panels, aerospace, and fuels. Trevor supplies high purity air-operated double-diaphragm (AODD) pumps, high purity heaters and associated accessories.

    • Danfoss AS
      • Denmark Address: Nordborgvej 81 Nordborg, Denmark

      Manufacturer Overview

      Danfoss, established in 1933 and headquartered in Nordborg, Denmark, is a manufacturer specializing in Climate Solutions, Drives, and Power Solutions. The company's solutions find applications in various sectors such as refrigeration, heating, and both off- and on-highway equipment. It also offers solutions for renewable energy sources like solar and wind power, alongside district-energy infrastructure for urban areas. Its digital displacement pump received both the Powertrain Product of the Year and Achievement of the Year in the 2022 Diesel Progress Summit Awards.

    • NES Ltd
      • Bulgaria Address: 13 Chelopeshko Shose Str. 1839 Sofia, Bulgaria

      Manufacturer Overview

      NES Ltd. is a manufacturer of renewable energy appliances and products established in 1994 and headquartered in Shumen, Bulgaria. The company produces appliances that utilize renewable energy sources such as biomass, solar, or geothermal power, which it markets under the brands SunSystem and BurnIt. These appliances include solid fuel boilers, enameled water heaters, and solar evacuated tube collectors. The company also offers technical support and spare parts services. It mainly serves clients in the construction, agricultural, and renewable energy sectors.

    • Reventon Group Sp. z o.o.
      • Poland Address: ul. Wyzwolenia 556 Kozy, Poland

      Manufacturer Overview

      Reventon Group Sp. z o.o., started in 2015 and based in Bielsko-Biala, Poland, is a manufacturer of HVAC systems serving the air, ventilation, and HVAC industries. Its portfolio comprises over 50 products, including air water heaters, destratification fans, and air curtains. The company also sells tailored HVAC equipment and industrial fans, including duct, roof, and wall fans. The company maintains a presence in over 40 markets worldwide and processes over 5000 orders annually. It offers water heaters with a light EPP casing, which, besides making the heaters lighter and easier to install, suppresses sounds resulting from the operation.

    • the Reinders Corporation
      • Netherlands Address: Plesmanweg 21, PD, Almelo, Almelo, Netherlands

      Manufacturer Overview

      The Reinders Corporation is based in Almelo, Netherlands, and has been a manufacturer of air and climate systems since its establishment in 1910. The company’s product portfolio includes greenhouse climate systems, industrial dehumidifiers and humidifiers, and industrial fume or dust extraction systems for regulating air quality. It also offers custom design and engineering services for unique projects. The company comprises multiple independent sub companies, most notably Reinders Industrial, ACMAN, Enerdes, and KARA.

    • Infinity Fluids

      Manufacturer Overview

      Infinity Fluids is a manufacturer of steam and heat products for the industrial sector that was established in 1998 in Worcester, Massachusetts, USA. The company’s product lineup includes liquid and DI water heaters for heating liquids such as glycol or oil, air and nitrogen gas heaters for use in industrial drying or fuel cells, and clean steam generators for applications in pharmaceutical bioreactors or humidification processes. The company is ISO 9001:2015-certified, and chiefly serves clients in the energy, pharmaceutical, and bio-science sectors.

    • Cleaver-Brooks Company

      Manufacturer Overview

      Cleaver-Brooks Company is a manufacturer of boiler room products and related equipment that was established in Thomasville, Georgia, USA, in 1929. The company primarily produces steam and hot water generation products. These products include water- and firetube boilers, waste heat boilers for recovering wasted heat from exhaust gasses, and electric boilers for low-noise and clean applications. It also offers low-NOx burners and economizers for improving boiler efficiency. The company’s products are used mainly by biofuel refineries, chemical processing plants, and power generation facilities.

    • Process Technology

      Manufacturer Overview

      Process Technology, established in 1978 and headquartered in Amery, Wisconsin, United States, is a manufacturer of industrial products and processing equipment. The company's products include inline immersion heaters, process controllers, and power supplies. These products have applications in acid and corrosive chemical heating, surface preparation, and wet deposition and are used by industries that include semiconductors, electroplating, and electronics. Apart from selling its products to wholesalers, it also provides original equipment manufacturer and private label manufacturing services.

    • Carrier Global Corporation

      Manufacturer Overview

      Ciat S.A. (a part of Carrier Global Corporation), founded in 1934 and headquartered in Culoz, Rhone-Alpes, France, is an HVAC equipment developer and manufacturer. The company's products are water-cooled units, air-cooled units, and chillers. It also produces all of the components for commercial-use HVAC systems, including controls for comfort units and heat pumps, air heaters, and air handling units. The company specializes in providing custom HVAC and air treatment solutions for the healthcare, hospitality, and commercial building sectors.

    • Condex Wattco Inc

      Manufacturer Overview

      Wattco was founded in 1972 and is headquartered in Lachine, Quebec. Wattco is a manufacturer of electric heating products for use in many utilities including oil and gas, renewable energy, HVAC systems, as well as others. Wattco products include immersion, circulation, inline, flanged, screw plug, pipe, over the side, industrial bore, tubular, finned tubular, strip, finned strip, cartridge, band, silicone rubber, open coil element, duct, finned tubular duct heaters, infrared radiant heaters, as well as other combinations of heaters and control panels.

    • GGS Structures Inc.
      • Canada Address: 3559 North Service Road, Vineland Station, Ontario, Canada

      Company Overview

      GGS Structures Inc. is a designer, manufacturer, and distributor of greenhouse, climate control, irrigation, and dehumidification materials established in 1979 and headquartered in Vineland Station, Ontario, Canada. The company’s product portfolio includes structures, benches & double rail carts, ventilation systems, heating systems, and greenhouse curtain systems, fans, insect netting screens, & dehumidifiers. It offers various greenhouse structures including freestanding, Venlo-style, wide-span, curved glass, and poly-covered greenhouses. It also offers various services including research & development, building & repair, and maintenance.

      • ZHEJIANG PENGXIANG HVAC EQUIPMENT CO., LTD.
        Modular Unit

      Company Overview

      Zhejiang Pengxiang HVAC Equipment Co. Ltd., founded in 2007 and headquartered in Shaoxing City, Zhejiang Province, China, is an HVAC equipment manufacturer and supplier. The company's core products include industrial-use and civic-use ventilation equipment, including fire smoke extracting axial fans, and diagonal flow axial fans. It also provides larger equipment, including wall-type hot fan units, combined hot air units with multi-wing high-efficiency centrifugal fans, and high-pressure centrifugal fans. These products are primarily used for industrial and commercial HVAC systems. The company's services include product customization and full OEM and ODM services.

    • ECO₂ Systems LLC

      Company Overview

      ECO₂ Systems LLC, an American company founded in 2020 and headquartered in Walled Lake, Michigan, is a manufacturer and supplier of CO₂ heat pump water heaters. The company's product lineup includes SANCO₂ water heaters and accessories such as wall brackets, freeze protection valves, and tank sensors. These products are used in various applications, including residential heating, healthcare where there is a need for hot water for sanitation and medical purposes, and industrial facilities. The company provides services including technical support, warranty claims for any issues with its products, and maintenance.

    • Armstrong International Inc.

      Company Overview

      Armstrong International Inc., founded in 1900 and based in Three Rivers, Michigan, is a multi-national manufacturer of thermal utility solutions such as heat transfer coils, heat pumps, and steam products. It provides custom services to companies in various industries, including hospitality, healthcare, and higher education, and a majority of its international facilities have ISO 9001 certification. The products also conform to the Pressure Equipment Directive (PED) requirements of 2014. In 1996, it pivoted from manufacturing and added thermal energy engineering services, and in 2005, it received trading approval from the United Nations’ UNFCCC for its steam system methodology.

    • Distributor Overview

      U.S. Global Resources, headquartered in Seattle, Washington, United States, has been a supplier of greenhouse systems for seed and plant propagation, reforestation nurseries, and general nursery applications since 1941. Some of the products offered by the company include greenhouse structures, coverings, heating and cooling systems, benches and displays, as well as greenhouse lighting and irrigation systems. Its offerings are utilized in animal confinement, post-harvest storage, poultry, and dairy buildings. The company has West Coast and East Coast U.S. operations to properly serve domestic and international clients.

Hot Water Heater Manufacturer Ranking

*Including some distributors, etc.

Derivation Method

The ranking is calculated based on the click share within the hot water heater page as of November 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.

Number of Employees

Newly Established Company

  1. Trebor International, Inc.: 1979 (45 years ago)
  2. Danfoss AS: 1971 (53 years ago)
  3. Heat Exchange & Transfer, Inc.: 1968 (56 years ago)

Company with a History

  1. U.S. Global Resources: 1942 (82 years ago)
  2. Omega Engineering, Inc.: 1962 (62 years ago)
  3. Heat Exchange & Transfer, Inc.: 1968 (56 years ago)

Hot Water Heater Manufacturers in United States

*Including some distributors, etc.

Global Distribution of Hot Water Heater Manufacturers by Country

*Including some distributors, etc.

Country Number of Companies Share (%)
United States of America United States of America 14 73.7%
Denmark Denmark 1 5.3%
Bulgaria Bulgaria 1 5.3%
Poland Poland 1 5.3%
Netherlands Netherlands 1 5.3%
Canada Canada 1 5.3%

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