Testo SE & Co. KGaA, based in Titisee-Neustadt in the German Black Forest, is the pioneer in the field of portable and stationary measuring technology.

Thayer, LLC is an HVAC/R Mechanical Contractor Offering Innovative Commercial, Industrial, and Institutional Building Solutions since 1981 in Maine and New Hampshire.

The Vaillant Group is an internationally active company based in Remscheid, Germany, which operates in the fields of heating, ventilation and air-conditioning technology. The Vaillant Group develops and manufactures customized products, systems and services to provide a comfortable living environment.

Therma is California's premier mechanical solutions provider, a leader in the field for 50 years. herma focuses on complex HVAC systems and high purity process piping and controls for cleanrooms, laboratories, and high-tech manufacturing facilities.

When it comes to innovative, custom and traditional air conditioning for boats, Thermowell has been the partner serving thousands of customers around the world since 1997.

Thermsaver is a company which provides HVAC solutions in Scotland. They provide Air Source Heat Pumps, Cylinders and Buffers, Biomass General, Boiler, Ground Source, Heat Pumps, Heating Controls, MVHR.

Timilon Corporation is an innovative and rapidly growing company, focused on the development and commercialization of proprietary nano-chemistry technologies and materials. The primary performance capabilities of the materials are to destroy, neutralize, eliminate, and/or protect against a wide variety of toxic chemicals, noxious odors, and biological hazards.

Tjernlund Products provides quality engineered and manufactured products that solve exhaust, ventilation and heating/cooling problems. They provide Duct fans, draft inducers, power venters for horizontal vents, vent hoods, fresh and combustion air intakes, room-to-room transfer fans, exhaust and radon fans.

TF Solutions started trading over a decade ago back in 2001. They provide Air Conditioning, Refrigeration, Copper and Insulation, Condensate Removal, Electrical, Tools and Maintenance, Trade Account, Heating and Cooling Systems, Portable Air Conditioning, Copper Pipe, and Insulation.

Torrco is headquartered in Waterbury, CT and is the 4th generation independent wholesale distributor of plumbing, piping, HVAC, and kitchen & bath supplies for both trade and retail customers serving Connecticut, Massachusetts & New York.

Transaera is developing a new class of affordable, energy-efficient, environmentally friendly cooling systems. They provide services and products such as air conditioning, water recycling, agriculture, energy efficiency, and climate control systems.

TFMO is an independently-owned family company specializing in refrigerated transport services. As an expert refrigerated carrier, they ship the products safely in compliance with temperature-controlled shipping requirements, at both positive and negative temperatures.

Tranter is a global engineering and manufacturing group specializing in thermal management in the process industries, district heating and within the building envelope. Tranter is strongly committed to expansion and leadership in all aspects of the plate heat exchanger business.

Tri-Went Industries Limited is located in Ajax, ON, Canada and is part of the Metal Valve & Pipe Fitting Manufacturing Industry. They are renowned providers of custom tube bending and fabrication, return bends, crossovers, multi-bends, connectors and serpentines.

Tri-Went is an ISO 9001:2008 registered custom tube fabricator with headquarters located in Knoxville, Tennessee, USA. They are renowned for providing custom tube bending and fabrication services.

Triangle Refrigeration Co. started out by providing commercial solutions to customers in central and eastern Pennsylvania. Now they are the trusted provider of commercial HVAC and refrigeration services and food service equipment in the New York Tri-State area.

Trosten Industries Company LLC., specializes in manufacturing of centralized air conditioning and kitchen ventilation equipment. At Trosten, it's all about providing quality HVAC solutions for residential, industrial and specialized applications.

TROX UK is the foremost designer and manufacturer of HVAC and building services solutions. With over 50 years of experience in the industry, the outstanding design expertise keeps the company at the forefront of product innovation.TROX continuously launches the most efficient and flexible range of air distribution and comfort conditioning systems in today’s market.

Troy Filters Ltd. is a custom manufacturer and supplier of filters and filter media for a variety of applications, including equipment protection filters, HVAC air filters, HEPA and cleanroom filters, paint spray booth filters, gas phase filtration, industrial air filters, power generation filters, and an extensive offering of OEM replacement filters.

TSI partners with research institutions and customers around the world to set the standard for measurements relating to aerosol science, air flow, indoor air quality, fluid dynamics and biohazard detection.

TAS Energy is a global technology company that provides clean, economic, modular energy solutions by focusing on the energy efficiency and renewable energy markets. They design and manufacture modular energy systems for the power generation industry; the district, commercial and industrial process cooling industries; data center/mission critical facilities; and the renewable energy sector.

Turbovent imports, manufactures and distributes a growing range of products including turbine ventilators, air conditioners, ducting and heating solutions. They continuously strive to introduce affordable new technology, aimed at providing IAQ solutions that save energy and reduce costs.

UNICO Inc. is the maker of The Unico System which is a small-duct, high-velocity central heating and air conditioning system.

Uniflair are a supplier of technologically advanced cooling solutions for critical environments with a policy of continual innovation. Uniflair invests over 5% of turnover (not profit) into research and development of both new cooling technologies and upgrades to existing products.

Universal Fan & Blower Ltd. are manufacturers of centrifugal and axial FRP composite corrosion resistant industrial and commercial fans.

UV Diffusers act as a shield removing pathogens from the air coming from the ventilation system before it enters the room. The disinfected air is then mixed with the air present in the room to reduce the concentration of contaminants. UV Diffusers improve ventilation efficiency while preventing the spread of airborne diseases.

UV Resources are a globally renowned company in UV-C disinfection and HVAC efficiency. They help disinfect airstreams, mitigate disease transmission, and kill microbial contaminants that impede HVAC efficiency. Company founders pioneered the application of UV-C energy in HVAC equipment nearly 25 years ago. Currently, they supply market-renowned germicidal UV solutions to facility managers and building engineers around the world.

Valtec-Umisa SA is a company in the metallurgical sector, with a long tradition and experience in the field of manufacturing and installing Pressure Equipment, mainly steam generators.

VECAMCO has specialized in the manufacturing and trading of accessories for air conditioning units, heating systems, ventilation components, and air treatment systems, becoming, in a short time, one of the pioneer companies in Italy and abroad.

Velavi Heating & Cooling provides A/C installation, A/C repair, heater repair, and commercial services in Norwalk, CA, and surrounding areas within a 30-mile radius. Velavi HVAC for professionals heating and air conditioning near the Los Angeles service makes sure the air purifying filters are replaced at a regular interval of three months.