International Facility Management Association (IFMA) is the world's largest and most widely recognized international association for facility management professionals, supporting over 23,000 members in more than 10​0 countries.

International Ground Source Heat Pump Association is an association of companies, professionals and users dedicated to promoting the science, utility and use of geothermal (ground source) heating and cooling technology.

The International Institute for Sustainable Laboratories (I2SL) is devoted to the principles of sustainable laboratories and related high-technology facilities, from design to engineering to operation. Through worldwide partnerships and the exchange of technical expertise, I2SL will encourage the development of high-tech facilities that address the rapid pace of science, medicine, research, and development in a dynamic environment.

IIAR is the world's renowned advocate for the safe, reliable and efficient use of ammonia and other natural refrigerants. IIAR members share their collective knowledge and experience to produce consensus documents that address various aspects of the natural and industrial refrigeration industry. IAR sets the standard for providing advocacy, education and the most up-to-date technical information to the ammonia and natural refrigeration community.

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.

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.

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.

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.

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.

Industrial distributors focus on product knowledge and expertise while bringing the customer a massive line of name-brand, quality products.

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.

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.

Islandaire is a manufacturer of through-the-wall replacement air conditioners and heat pumps, including PTACs, VTACs, water source heat pumps and gas units.

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.

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.

ItuGraf is the most efficient radiant ceiling system on the market. It is ideal for the management of heating systems in buildings of all sizes, for both new buildings and renovation projects. ItuGraf heating and cooling panels effectively create a comfortable room temperature without dust, drafts or noise, and significantly improve indoor climate.

IV Produkt offers a high-quality and innovative products that make it possible to recover energy and create a good indoor climate. This has been their philosophy for many years, and has created great success for us with an average growth of 12% over the last ten years.

One of Ukraine's leaders in the complete spectrum of climate control solutions.

With 10-years’ experience in hand tools, IWISS has become a leading manufacturer of high-quality, user friendly and ergonomic cable tools and pipe tools for professional users.

J & J Air Conditioning provides comprehensive HVAC services to commercial and industrial clients. They utilize evolving technology to find new and innovative ways to serve their customers.

J. F. Ahern Co is a mechanical and fire protection contractor specializing in HVAC, Plumbing, Building Controls, Sprinkler, Extinguisher & Alarm and Fabrication for construction and service projects.

J.L. Brady Company LLC offers dependable, quality service to homeowners in the Quad Cities community for over 100 years. Their experienced technicians are well-trained and knowledgeable on all HVAC products, so the customers can be confident knowing that they can trust the company.

J.R.V Heating & Cooling LLC. believe that nothing is more important than comfort. Their technicians are here to attend to client's needs 24 hours a day. They offer a variety of maintenance service designed to address unique needs with their rates are among the most competitive in the industry.

J's HVAC Unlimited is a full-service HVAC company with years of industry experience on our side. It offer traditional heating and cooling services to go along with extensive indoor air quality and general home comfort services too.

J&W Heating and Air is a full service residential and commercial HVAC company within Jacksonville and the surrounding areas. They offer a wide variety of indoor comfort solutions including heating and AC installation, heating and AC repair, maintenance plans, and complete indoor air quality service.

Jackery, the world's pioneering innovative portable power and green outdoor energy solution provider founded in California in 2012, is a global top-selling solar generator brand born with a mission to offer green energy to everyone, everywhere. Jackery launched its first outdoor portable power stations in 2016 and developed its first portable solar panels in 2018.