The National Institute of Standards and Technology (NIST) was founded in 1901 and is now part of the U.S. Department of Commerce. NIST measurements support the smallest of technologies to the largest and most complex of human-made creations, ranging from nano-scale devices so tiny that tens of thousands can fit on the end of a single human hair up to earthquake-resistant skyscrapers and global communication networks.

National Pump Company manufactures a complete line of vertical lineshaft turbine, submersible, and booster pumps for the agricultural, municipal, petroleum, and industrial-commercial markets. They are a major fluid pumping solutions provider in the global water and energy markets through collaboration and innovation.

Nederman is an environmental technology company and a global pioneer in industrial air filtration dedicated to capturing, measuring, controlling, and cleaning air to make industrial production more efficient, safe, and sustainable. Based on industry-pioneering products, solutions, and services in combination with an innovative IoT platform they deliver knowledge and facts needed to optimize performance and guarantee emissions compliance.

Neighborly® is the world's largest home services company with more than 30 brands and 5,500 franchises collectively serving 12 million+ customers in six countries, focused on repairing, maintaining, and enhancing homes and businesses. Through Neighborly.com and the Neighborly mobile app, Neighborly connects consumers to local service providers that meet rigorous franchisor standards across 19 service categories.

New Sat deals with specialized activities and services, from design to construction, intended for civil and industrial installations of electrical systems, public and private lighting, air conditioning systems, installation of photovoltaic panels, automation, home automation, alarm systems, video surveillance. and fog generators, telecommunications, satellite systems, digital terrestrial TV systems and closed circuit TV.

Nexia is a globally renowned smart home systems provider based out of Broomfield, Coloroda, USA. They provide home automation systems, climate control solutions, energy sustainability solutions and IoT devices.

AUX Group is an enterprise group which covers several industries: home appliances, electrical equipment, medical service, real estate and financial investment. They are a renowned provider of Air Conditioners, including wall splits, portable and floor standing units.

NJR Home Services is a trusted HVAC company dedicated to providing top-notch home comfort solutions. Specializing in furnace installation, air conditioning installation, and water heater installation, they cater to various heating and cooling needs. They offer customers home comfort solutions, including equipment sales and installations; lease and purchase of solar; and Comfort Service Plans, including heating, cooling, water heating.

Nordic Technology Group AS is an industrial technology company with three business areas sensor-, nanomaterials- and clean tech, introducing ground-breaking technology solutions in mega trend growth markets.

Nordicco A/S is a Danish company, aiming to contribute towards the acceleration to a more sustainable society. Nordicco designs and manufactures HVLS fans and associated control systems. Their solutions help private companies and public institutions with several issues: Improve their indoor climate, lower their energy consumption, reduce their CO2 emissions, and eliminate the spread of airborne pathogens, such as viruses.

Noritz offers a full line of tankless water heaters and high efficiency combination boilers to meet the hot water demands of residential and commercial applications. Noritz supports its products with a national network of skilled representatives and employees who are committed to providing the finest products and services to its communities by helping consumers.

Nortek Global HVAC designs and manufactures reliable heating and cooling products. Nortek Global HVAC and its subsidiaries build and sell HVAC systems under the Maytag, Frigidaire, Gibson and Reznor brands, among others.

Nova Vit Srl , founded in 1968 in Turin, operates on a full cycle in the aeraulic and industrial filtration sector. They do not limit themselves to adapting standard solutions to individual projects but they take care of customizing the systems by studying the best solution according to the needs of the individual customer.

NRB Inc. is an established and reputable leader in off-site commercial modular construction and building automation systems. They provide a faster, more sustainable alternative project delivery method. From innovative design engineering through off-site fabrication in a controlled environment, to final on-site completion, their projects range in size and scope and include a wide range of applications.

NSK is the globally renowned manufacturer of bearings, linear technology and steering systems. NSK products are used in all kinds of rotating equipment and industries including but not limited to machine tools, robotics, railways, wind turbines, production machinery and vehicles to help improve both reliability and efficiency.

NTT DATA – a part of NTT Group – is a trusted global innovator of IT and business services headquartered in Tokyo. They help clients transform through consulting, industry solutions, business process services, digital & IT modernization and managed services. NTT DATA enables them, as well as society, to move confidently into the digital future.

Nu-Mun Contracting is a Calgary based plumbing company formed by Doug Muncaster in 1989. They provide sheet metal installations for commercial, industrial and residential applications. The company also offers air conditioning, residential plumbing, commercial plumbing, and other HVAC solutions.

nVent RAYCHEM is a provider of heat-trace management systems for infrastructure, industrial, commercial and residential buildings, with operations globally. They help customers enhance productivity and reduce their costs by simplifying installation and minimize downtime during operation.

NWPX Park, a division of NWPX Infrastructure, is a pioneer in the design and construction of innovative water utilities and environmental solutions, and is proud to highlight its MeterVault® water meters and BackFlo® backflow prevention product lines. These advanced solutions provide accurate, real-time consumption data with automated leak alerts and certified, hydrostatically tested backflow protection in turnkey assemblies.

Oakley Transport is dedicated to transporting liquid food grade products in the contiguous United States and also Canada and Mexico. They are pioneers in the liquid bulk food grade transportation industry for quality service at a price sensitive value.

With the Occupational Safety and Health Act of 1970, Congress created the Occupational Safety and Health Administration (OSHA) to ensure safe and healthful working conditions for workers by setting and enforcing standards and by providing training, outreach, education and assistance. The OSH Act covers most private sector employers and their workers, in addition to some public sector employers and workers in the 50 states and certain territories.

For more than half a century, OJ Electronics have been designing and developing electronic controls for electric underfloor heating and HVAC Controls & Drives. They give access to deep application knowledge and innovative power and help differentiate themselves in the market. They are here to help build their customers’ business.

Oklahoma Chiller Corporation is a commercial and industrial HVAC company with offices in Tulsa and Oklahoma City. In addition to mechanical and HVAC services, Oklahoma Chiller offers building automation services and equipment rental services.

Olimpia Splendid is an Italian company globally known for its design, production and marketing of products for Air Conditioning, Heating, and Air Treatment solutions.

OLSSON-GROUP specializes in heat exchangers, plate heat exchangers in particular. Their team has years of experience in the design and sale of heat exchangers brazed and gasketed. They supply heat exchangers for heating, hot water, cooling, solar systems etc.

ONDA S.p.A. is manufacturing company of advanced heat exchangers for refrigeration, heating and air conditioning equipment.

One Hour Heating & Air Conditioning® of Lee's Summit is the most trusted source of HVAC services in the Lee’s Summit area. Their team of Lee's Summit heating and cooling technicians are highly trained and licensed, so that they can provide the best Lee’s Summit HVAC repairs, installation, and maintenance possible.

OpenTherm is a non-manufacturer-dependent system of communication between modulating HVAC appliances and room thermostats. It consists of a communication protocol and an interface specification. The OpenTherm communication protocol is primarily designed to control modulating heating appliances. The protocol is available to members of the OpenTherm Association only.

Oxbox HVAC is a value‑focused residential and light‑commercial heating and cooling brand under Trane, offering affordable air conditioners, heat pumps, air handlers, and coils. They recently launched a low‑GWP R‑454B refrigerant split‑system line, highlighting their shift toward more sustainable, eco‑friendly HVAC solutions.

The Danish-based company was founded in 1988. Pioneering developer and manufacturer of research manikin systems, including thermal manikins, sweating manikins, and breathing manikins - ideal for evaluating the thermal comfort of HVAC systems, clothing & protective equipment, vehicle cabins and indoor environments in general.