The BellSimons Companies was founded in 1940 as The Bell Pump Company, operating out of Hartford, Connecticut, rebuilding oil pumps for the heating trade. By the late 1940s, locations in New Haven, Connecticut and Springfield, Massachusetts, opened to better serve the professionals in the residential and commercial fields.

Benmax designs, builds and maintains specialized mechanical systems for commercial and industrial facilities to provide healthy, safe and efficient indoor environments for people to live, work and play. They provide Mechanical Services and HVAC Design, Mechanical Services Construction, Service and Maintenance, Project Management, Specialist advice and support and much more.

Berg Chilling Systems designs, manufactures, installs and services industrial thermal process control systems for a broad range of industries and specialized applications around the world. Over the past 45 years, they have pumped, chilled, frozen and heated our way to the forefront of thermal management solutions.

Headquartered in New Castle, Pennsylvania, Berner Air Curtains combines engineering expertise, state of the art equipment, and highly skilled workers to design and produce the most efficient, best looking, reliable air curtains on the market.

Berner International is the manufacturer of air curtains/air doors, helping customers save energy and create healthy, comfortable environments for over 50 years.

Berry Global provides Air Filteration solution. They also provide meltex meltblown materials which serves a wide variety of air applications from room air purifier to facemasks to cabin air filtration.

Bespoke Ventilation Systems Ltd is a company with a team of experienced professionals. Their team specializes in the installation of ventilation systems for commercial kitchens and industrial sites. They have worked on major projects in the past, and they offer a complete package for all types of buildings.

BG Energy Solutions is a UK based, Building Management System specialist, managed by a team of engineers to provide a unique range of automated control, energy solutions and remote support services to proactively improve comfort, well-being and building environment, while also helping to reduce operating and energy costs.

Biltwel Duct Cleaning Equipment Mfg. Inc. manufactures duct cleaning equipment, truck mount units and many more. They provide free training with every equipment purchase.

Bioclimatic uses all of the states of air cleaning technologies – from gas phase media to ionization to PCO to advanced powered filtration. Their manufacturing capabilities enable them to offer a comprehensive product line that includes stand-alone products; equipment to be installed in other HVAC systems; and complete, custom engineered air handlers and air cleaning equipment.

BioZone offers chemical-free air and surface HVAC solutions for cleaning both residential and commercial enclosed spaces. BioZone Scientific International Designs, sells, and installs Chemical Free Purification Systems to Eliminate Viruses, Bacteria, Fungus, Other Microbial Growth, and Odors.

Birch Hearth & Home Center is the one stop shop that provides heating and cooling sales and service to the Tri-State area of Lowa, Illinois and Wisconsin. They offer years of experience in installation and service of the furnace and air conditioning needs.

Birko Electrics started life just prior to World War II, making soldering irons for local markets. During the war, a need was identified for some from of portable food and drink heating vessel. Birko expanded further, making industrial elements for washing machines and air conditioners. The element plant developed elements for Birko's domestic appliance market, which further improved the quality and efficiency of its products.

BITZER is an internationally leading, independent specialist for refrigeration and air conditioning technology with activities in refrigeration, air conditioning, process cooling, transport as well as services. The BITZER Group caters to the cooling of temperature-sensitive goods and reliable indoor temperature control with energy-efficient and high-quality products and services.

BLC Industries Inc. is a Manufacturer of air filtration: components; filters; custom and standard filtration equipment (frames and housings); automatic filtration equipment; purification/absorption; moisture separation; HEPA equipment and HVAC accessories.

Blocksom & Co. is a diversified manufacturer of a wide variety of natural fiber products. These products are marketed throughout the continental United States and Canada to supply the demands of industries including heating and air-conditioning, furniture, U.S. government and military, construction, and aquaculture.

In March 2003, when Blue Air started in the foodservice equipment industry, it opened with a couple lines of refrigeration equipment and a few employees in a very small office and warehouse space. Ever since these humble beginnings, Blue Air has grown steadily each year by constantly adding new products and new customers. It has now become one of the major suppliers in the industry with multiple distribution warehouses and sales offices.

Blue Frost only installs equipment like Trane furnaces and Air Conditioners. They also install the industries best supporting products to enhance the comfort such as thermostats, humidifiers and air cleaners to keep the home clean and comfortable.

Blue Star Heating and Air is a globally renowned air conditioning and commercial refrigeration company with over seven decades of experience in providing expert cooling solutions. It fulfills the cooling requirements of a large number of corporate, commercial as well as residential customers, as well as offers products such as water purifiers, air purifiers and air coolers.

Looking to the world challenges coming from Climate changes and Environment protection regulations, BlueBox develops Products and Solutions for Commercial Comfort Cooling and Heating, Technological Cooling, and Data Cooling, bringing to the market innovative ideas and offering the client the best Total Cost of Ownership for their projects.

Bluon is a fast-growing company with a mission to bring unparalleled innovation to the HVAC industry by empowering HVAC technicians.

Blygold International is a provider of preventive corrosion protection for heat exchangers. Worldwide, building owners as well as manufacturers of air-conditioning equipment have been using their services to their full satisfaction for years.

BoilerMag provides magnetic filters for domestic, industrial, commercial heating, and cooling systems.

Boland is a commercial HVAC systems, services, and building energy solutions provider in the DC metro area. They help customers succeed by providing innovative solutions that optimize indoor environments through a broad portfolio of energy-efficient heating, ventilating and air conditioning systems,

Bourke Air wants to be there for every step that the clients need assistance with when installing, designing and servicing their commercial mechanical systems. Whether working with their projects team, the installers or their ongoing maintenance personnel, they don't leave the clients hanging at any point of the process.

Bowman Refrigeration is stocked with an extensive inventory of equipment and parts for refrigeration and HVAC. The technicians and fabricators are experienced, safe, well-trained, and motivated, and everyone here takes pride in delivering the best customer service possible. The company has remained heavily involved in the Alaska fishing industry, also branching out into other sectors of the maritime industry and land-based operations as well.

Braeburn is the value alternative for electronic non-programmable and programmable thermostats, humidification, air filtration and zoning products for residential and light commercial applications.

BrainBox AI is at the forefront of a new era in building automation and a pioneer in the green building revolution. With headquarters located in Montreal, Canada, a global AI hub, their team is comprised of experts in the fields of AI, data science, real estate, HVAC and energy efficiency. The smart solutions HVAC company brings innovation and cutting-edge artificial intelligence to the built environment, making buildings smarter and greener.

Bramec provides condenser bases, heat pump stands, plastic tubing, plastic pipe and fittings, traps, gas line test gauges, sealing compounds, insulation materials, electrical items, brushes, anti-vibration pads, secondary condensate drain pans.

Braywhite & Co Ltd was established in 1967 in order to provide specification, design, installation and maintenance services to both commercial and residential clients based within Birmingham and the Midlands area. Initially the company specified in Commercial Air Conditioning, Industrial Processes and Commercial Refrigeration.