The North American Electric Reliability Corporation (NERC) is a not-for-profit international regulatory authority whose mission is to assure the reliability and security of the bulk power system in North America. NERC develops and enforces Reliability Standards; annually assesses seasonal and long‐term reliability; monitors the bulk power system through system awareness; and educates, trains, and certifies industry personnel.

North Park Innovations Group, Inc. offers a high-tech HVAC solutions and product lines that were originally part of the company Stride Tool Inc.. North Park Innovations' product line includes the iManifold and iConnect solutions, all cloud services, and industrial training units.

North Pole Cooling System Pvt. Ltd. was established in 1996, the company has 25 years of experience in this field, and has set up unit at Ahmedabad, Gujarat for panel air conditioners, water chilling plants and customized industrial cooling solutions.

Northeast Technical Institute prepares people throughout Maine with new and marketable trade skills, allowing them easy access to exciting careers. Their real-world training equips with the job skills and national certification that the employers are seeking. They provide HVAC training, technical school, vocational school, commercial driving, and certifications.

Northern Weathermakers HVAC, Inc. provides a range of solutions, including in the scope of Building Automation, Equipment Replacement, Preventative Maintenance and HVAC solutions.

Northrop Grumman is a global security company providing innovative systems, products and solutions in unmanned systems, cyber, C4ISR, and logistics and modernization to government and commercial customers worldwide.

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.

NTI manufactures only top-quality hydronic heating equipment. Acknowledged as a pioneer in research and product development, NTI is a pioneer in developing the most advanced and efficient home heating equipment, including gas boilers, water heaters, combi furnances, hot water tanks and solid fuel boilers.

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.

NTT Training is about delivering very practical hands-on safety and trade skills to workers around the world. They deliver the most comprehensive, skills-based HVAC training programs and Hands-On Training.

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.

Nuvolo is the pioneer in modern, cloud-based Connected Workplace solutions. They provide a single platform to manage all people, all physical locations, all assets, and all work – enabling data sharing across departments.

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.

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

O.T. Hall & Son has been successfully promoting electrical, lighting, heating and networking products since 1920. They are family-owned and operated and service Maryland, DC, Virginia, Delaware and the panhandle of West Virginia.

Since 2000, Oakleaf Commercial Services has been providing high quality, professional, property maintenance and construction services. They also offer a wealth of services including responsive repairs, building construction, modernizations and adaptions, grounds maintenance, fleet services, a PVC-u manufacturing facility and a bespoke joinery workshop.

OCTOPUS Systems was founded in 2013 by a team of experienced security and technology experts with the mission of creating a new breed of smart, agile, and easy-to-deploy Command and Control software system.

Ofgem is Britain’s independent energy regulator. Their role is to protect consumers now and in the future by working to deliver a greener, fairer energy system. They are a non-ministerial government department and an independent National Regulatory Authority.

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.

Okto International, a HVAC provider has been working with the mission is to operate their company under Christ-like principles & standards; with integrity, honor; and work ethic. They are a highly respected service provider in the areas of Heating and Air-Conditioning all over Houston with installation, repair and maintenance.

OMNIA Partners, Public Sector is the cooperative purchasing organization that is driving excellence in public sector procurement for K–12 schools and districts, state and local governments, colleges and universities and nonprofits. OMNIA Partners offers the most robust portfolio of high-quality cooperative contracts in the public procurement space.

OMS Machinery Co.,Ltd. is a High-Tech company, dedicated to the development and production of automatization, digitalization, and intelligentization equipment. Located in Zhongshan, Guangdong, OMS employs 80 professional engineers, and is well equipped with facilities. The company’s quality system and measurement system are ISO certified.

On Air services the South Palm Beach County areas, Broward County and North Dade County.We install and service all major and minor brand air conditioners, serving both Residential and Commercial Customers.

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.

One Source Home Service, an Air Pros company, was founded on the premise of Integrity, Reliability, and putting the customers first. One Source Home Service is here to help the users with HVAC, ductwork, plumbing, electrical, and home energy needs in the Colorado Springs and Pueblo, CO areas.

One Source, Inc. provides complete building management services for commercial properties throughout San Diego. they work with clients in a wide variety of industries to coordinate services in every area of maintenance, from janitorial services to landscaping, high-pressure washing, carpet cleaning, window washing, junk removal, and much more.

Customers will often call when their home is uncomfortable and One Stop Heat & Air's goal is to provide them with fast, friendly, and efficient heating and or cooling services. Heating or cooling issues are never convenient, and they can also be stressful and expensive. One Stop aims to provide customers with the best service at a reasonable price.

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.

Optergy provides effective tools to help manage the building’s comfort conditions and improve tenant retention. By optimizing comfort conditions (temperature, humidity, and ventilation) they can ensure the tenants are happy and more productive.

Building owners and facility managers are quickly adapting to smart building trends that can both attract tenants and improve operational efficiency. Today, commercial buildings are more linked with connected devices than ever, from lightbulbs and thermostats to security alarms and elevators.