Madison Industries is a globally-renowned mechanical engineering, HVAC equipment and industrial automation solutions firm conglomerate based out of Chicago, Illinois, USA. The conglomerate believes and strives in providing a safer and healthier world, with state-of-the-art electronics, HVAC equipment, home and building automation systems that are energy efficient and cost effective.

Markel Products is a renowned provider of commercial, industrial, residential electric heating equipment, industrial ventilation, controls, industrial lighting, portable air conditioning and portable evaporative cooling solutions.

For over 36 years Mastercool has been supplying professional quality air conditioning service tools and equipment. As one of the fastest growing companies in this market, our primary goal is to drive New Product Innovation and Technologies to make the every day work of the HVAC/R technician easier. Complete line of HVACR service and installation tools.

MIL-RAM TECHNOLOGY INC. designs/manufactures gas/flame detectors and detection systems, to detect hazardous gases, Toxic/Combustible LEL/Oxygen/VOC, for personal safety environmental protection and process controls since 1990.

Mitsubishi Heavy Industries, Ltd. delivers innovative and integrated solutions across a wide range of industries from commercial aviation and transportation to power plants and gas turbines, and from machinery and infrastructure to integrated defense and space systems.

Modine is one of the most trusted names in the HVAC manufacturing industry. They serve a variety of markets, providing residential HVAC, geothermal heating and cooling, commercial rooftop HVAC systems, classroom HVAC and more. Along with heating and cooling systems.

Nest reinvents unloved but important home products, like the thermostat and smoke alarm. The company focuses on delighting customers with simple, beautiful and thoughtful hardware, software and services.

NevadaNano enables small, low-power, sensitive, and accurate IoT ready gas analyzers that protect people, homes, buildings, factories, and the environment for healthier homes, offices, and people. Examples of products are a methane gas detector for monitoring methane leaks, an LEL sensor for a flammable gas detector that saves lives from dangerous gases, and an A2L refrigerant gas detector to detect and notify staff of dangerous refrigerants.

Nitto Denko Group offers to the global market a wide range of high-value-added products including optical films for liquid crystal displays, automotive materials and parts, reverse osmosis membranes for seawater desalination, transdermal drug delivery patches, and much more.

Noveo manufactures 'plug-and-play' 'ventilation-on-demand' technologies that automatically control exhaust systems for industrial paint Booths, and commercial kitchens, (DCKV-Demand Control Kitchen Ventilation)-energy savings 30-80%.

Nu-Calgon markets and distributes a complete line of specialty chemical products for the HVACR aftermarket. They provide water treatment, sealants, specialty and service chemicals, coil cleaners, system flush solvents, refrigeration oil, vacuum pump oil, ice machine treatment, indoor air quality.

Nyle Systems is a manufacturer of commercial energy-efficient heat pump water heating systems.

Opera Electronics Inc. develops and manufactures a range of indoor air quality and gas sensors for buildings. The core applications of the company are vehicle emissions monitoring in car parks, refrigeration gas leak detection, and combustible gas monitoring in HVAC plant rooms.

Panasonic Corporation provides products and services for a wide range of spaces, from homes to offices and stores, focusing on B2C businesses such as home appliances, beauty, and health, and B2B businesses such as cooling and heating appliances for commercial use, devices, energy etc.

With a diverse network of production and R&D facilities, Panasonic delivers innovative products incorporating cutting-edge technologies that set the standard for air conditioners worldwide.

Panasonic Corporation is a worldwide leader in the development of diverse electronics technologies and solutions for customers in the consumer electronics, housing, automotive, and B2B businesses.

PCE Instruments are the manufacturer and supplier of test devices, control systems, lab equipment, scales and balances. They have headquarters in Germany and sales offices around the world, including UK and US.

Pfeiffer offers leak detectors for HVAC/R and QC applications; Pfeiffer Vacuum produces turbopumps used in semiconductor, fabrication, optical and industrial thin film deposition, such as flat panel displays, TV monitors, analytical instrumentation, research, development.

Formed in 1997. Prefect Controls Limited's goal was to design and make clever, but simple energy controls that fulfilled the commercial needs of the building operator while providing fixed control access for the occupant.

Propous is one of the largest independent suppliers of gas and oil burner’s spare parts, valves, air heaters, and HVAC products. The success of the company can be attributed to its efficiency, reliability, technical knowledge and an understanding of the customer’s requirements.

QE QUALITY is a fully integrated design, manufacturing, and distribution company in the HVAC/R industry. They also offer copper tubing, cold controls, copper fittings, contactors, fan blades, hard start kits, motors, thermostats, timer defrost controls, transformers, vibration eliminators.

Qolsys Inc is a pioneer residential and commercial security and smart-home manufacturer. They provide smart thermostat, video monitoring, energy management and home automation.

QEL is a pioneer in manufacturing toxic and combustible gas detection equipment. With a diverse product offering, they are able to satisfy both commercial and industrial toxic and combustible gas detection applications.

Quest Controls Inc. is a leading designer and manufacturer of intelligent automation systems (hardware and software) for small, medium and large buildings intended to deliver major energy savings. Quest provides telecommunications with remote monitoring for power and battery capacity, control of main door access, intelligent lead/lag, control and monitoring of HVAC systems, gas monitoring, telephony equipment monitoring, environmental monitoring,

RectorSeal is a manufacturer of specialty chemical sealants. They have developed a robust line of chemical, mechanical and firestopping products. These products are distributed through an extensive wholesale distribution network serving the plumbing, industrial, HVAC-Refrigeration, construction, electrical, and hardware market places.

REFCO Manufacturing Ltd. manufactures HVAC/R service products and mini split condensate pumps.

Refrigeration Technologies is the manufacturer of specialty chemicals, product research, development and marketing in the HVAC market.

Regin HVAC Products Inc. are manufacturers of leak detectors, draft gauges, damper hardware, humidistats, expansion joints, air leakage testers, relay testers, leak test tools, hygrometers, and voltmeters.

RIDGID provides high quality HVAC products for drain cleaning, pipe fabrication, pressing, threading and much more. RIDGID® Wet/Dry Vacs are designed and engineered for best-in-class power, performance and durability. RIDGID shop vacuums are also backed by the best warranty in the industry.

Ritchie Engineering Inc. offers a complete line of HVAC&R service and installation tools including recovery, vacuum pumps, hoses, test and charging manifolds, gauges, leak detection and electronic testing equipment, and service tools.