ITI supports apprenticeship and advanced career training for union workers in the sheet metal industry throughout the United States and Canada. Located in Fairfax, Virginia, the ITI produces a standardized curriculum supported by a wide variety of training materials free of charge to apprentices and journey-level workers who work in the following specialized disciplines: Architectural Sheet Metal, Building Information Modeling,& HVAC Service.

International WELL Building Institute (IWBI) is the global authority for transforming health and well-being in buildings, organizations, and communities around the world. IWBI's mission is to lead the global movement for putting people first in business decision-making and culture.

Interplay Learning is a software company with a mission to deliver scalable and effective trades training. Interplay Learning creates modules and training for multiple industries including HVAC.

Intertek is a quality solutions provider to industries worldwide. From auditing and inspection to testing, training, advisory, quality assurance, and certification, the company adds value to its customers by helping improve the quality and safety of its products, assets, and processes. Intertek caters to various industries including chemicals, retail, transportation, life safety and security, energy and commodities, energy, and more.

Since 1919, Intertherm has been an integral part of improving the comfort of manufactured homes. They are the only heating and cooling manufacturer to be certified in Demand Flow Technology.

INTOHEAT Ltd is a Mechanical & Electrical building services company based in Bristol and Exeter, operating nationally. Their efficient, personal and friendly service ensures every project is managed to the highest standards in terms of estimating, planning, design, installation and ongoing maintenance.

InviAir is a manufacturer of wall and ceiling air diffusers and grilles for HVAC systems. The innovative, flush-mount process allows products to blend discreetly into the interior architecture unlike anything else on the market. Founded by HVAC professionals with over forty years of experience in the industry, InviAir is dedicated to offering some of the best air diffusers and grilles worldwide.

Established to serve wholesale distribution, iO HVAC Controls offers unique products from multiple sources for a variety of applications. From wireless relays to fresh air ventilation controls, the company's solutions are designed to be easy to install, cost-effective and profitable.

ION Enterprises manufacturers a range of environmental water treatment devices under the trademark ION ScaleBuster. Ion provides an innovative approach to water conditioning. ION ScaleBuster is a proven water conditioning technology for general pipework, heating and plumbing equipment, appliances and processing equipment.

IonicBlue® is a joint venture between Johnson Controls, the global pioneer in delivering energy and infrastructure solutions, and Apollo Global Management a leading, global alternative asset manager. They deliver a total solutions approach through the expertise of Johnson Controls and the unmatched ability of Apollo to provide alternative capital solutions.

Iowa Precision Industries is a leader in automated HVAC coil lines, duct fabrication systems, seam closers and corner inserters – a company with a rich history that has the experience and proven know-how to develop systems meeting the specific production goals of customers – worldwide. The Fabriduct(R), ProFabriduct(R), Ductomatic, Cornermatic(R), Whisperloc(R), and Elbowmatic machines are the industry’s finest products.

At Ipsos believe the clients need more than a data supplier, need a partner who can produce accurate and relevant information and turn it into actionable truth. This is why passionately curious experts not only provide the most precise measurement but shape it to provide a True Understanding of Society, Markets, and People.

Ipswich Heat Network includes over 40 buildings, including public sector buildings, commercial offices, retail and leisure facilities, and educational establishments. All of the proposed connections have shown an interest in the scheme; however, a final design cannot be announced until formal agreements are in place.

Irr Supply Centers, Inc. is a renowned distributor of Plumbing, Heating, Cooling, Electrical, and Refrigeration products serving a wide range of customers throughout Western/Central New York and Northern Pennsylvania.

IDC has several designers on staff, each holding various certifications with The Irrigation Association in drip/micro systems, sprinkler systems, and surface irrigation methods. They provide air vents, pumps, pressure regulators, filters, valves, and much more.

At IRSAP Spa, they are a leading company in Italy and Europe in the heating sector. Production of tubular steel radiators. Main company of a leading group also in the production of air conditioning systems, chillers, refrigeration machines for civil and industrial use, as well as radiant air conditioning systems.

Isaac Heating & Air Conditioning is one of the largest privately-owned HVAC contractors in the United States. They offer residential and commercial installation and servicing of heating and air conditioning equipment. Their products inventory includes boilers, air conditioners, heat pumps, humidifiers, dehumidifiers, thermostats and water heaters.

ISAB Group offers services in energy, ventilation and pipe lining. They are located in Gothenburg, Halmstad and the Malmö region.

ISC Sales Inc. provides superior industrial products to a wide variety of end-users and original equipment manufacturers (OEM). They offer a broad range of climate control products for electrical enclosures, such as air conditioners, vortex coolers, air to air heat exchangers, purge & pressurization units, filtered fans, and thermoelectric coolers.

ISCO Industries is a global customized piping and other HVAC solutions provider based in Louisville, Kentucky, USA. ISCO stocks and sells a wide variety of piping materials and provides solutions for various environmental, geothermal systems, industrial, landfill, mining, municipal, nuclear, waterworks and culvert-lining applications worldwide.

ISD has built and maintained its position as the foremost specialist in cold store construction. With a full range of design, installation, and manufacturing services, ISD Coldstores provides the complete solution for the installation of temperature-controlled envelopes at distribution centers for major UK supermarket chains and many other organizations.

Island Heating & Air Conditioning provide services for all AC maintenance and furnace repair needs. They also deal with AC Installation, AC Repair Service, Complete AC Replacement, Furnace Maintenance, Heat Pump Maintenance, and Heat Pump Installation.

ISM manufactures Spiral Tubeforming Equipment utilizing state-of-the-art technologies to deliver the best Spiral Tubeformer in the industry and offer Spiral Fitting machines featuring Gorelockers, Stitchwelders, Oval and Flanging machines.

World on the high-performance glazing solutions scene, the Isoclima brand stands for excellence in the development of stylish, design-packed products engineered to provide security on land, sea, and in the air.

ISOPARTNER specializes in the distribution and conversion of innovative solutions for technical insulation. With a focus on professional advice, standard and tailor-made insulation solutions and excellent logistics, ISOPARTNER is your preferred partner to strengthen their competitive edge.

ISOTECH Industries Inc. provides guaranteed engineered solutions and supplies vibrations isolation, seismic restraint systems, floating floors, engineered pipe risers, and architectural vibration isolation systems. These solutions are supplied according to specifications provided by Architects and Engineering Firms according to building code and/or owners’ demands for tender/bid documents.

ISS Mechanical is a 'Service First' Mechanical Contractor. They specialize in the service, maintenance, repair and replacement of air conditioning, chillers, controls and refrigeration equipment for existing Commercial, Healthcare and Industrial Facilities. Their service area is Central Florida, with offices in Orlando and Tampa, Florida. They are able to provide mission critical and emergency service to facilities throughout Central Florida.

Founded in 1952, ISVAL is a leading manufacturer of hot forged and machined brass and aluminium products. Equipped for medium and large size production, ISVAL can meet even the most custom-made requests, thanks to more than sixty-year experience and to a proactive approach to customers.

IT Tech Packaging Inc. is a renowned paper manufacturer, software solutions and packaging solutions firm based in North China.

ITALIA REFRIGERAZIONE is a young and dynamic company present in the refrigeration and air conditioning sector since 2012, founded on a solid historical basis of professionalism and long experience.