The National Board of Boiler and Pressure Vessel Inspectors was created in 1919 to promote greater safety to life and property through uniformity in the construction, installation, repair, maintenance, and inspection of pressure equipment.

National Center for Construction Education and Research (NCCER) is a not-for-profit education foundation created in 1996, as The National Center for Construction Education and Research. NCCER develops standardized construction and maintenance curriculum and assessments with portable credentials.

The National Environmental Balancing Bureau (NEBB) is the premier international association of Certified Firms that perform Building Systems Commissioning, Building Envelope Testing, Cleanroom Performance Testing, Fume Hood Testing, Retro-Commissioning and much more!

The Occupational Safety and Health Act of 1970 established NIOSH as a research agency focused on the study of worker safety and health, and empowering employers and workers to create safe and healthy workplaces. NIOSH is part of the U.S. Centers for Disease Control and Prevention, in the U.S. Department of Health and Human Services. It has the mandate to assure “every man and woman in the Nation is safe and in healthy working conditions.

Nelumbo is commercializing a new platform of structural materials. The company’s current focus is on developing improved heat exchangers for the HVAC market.

NG Bailey is the UK’s independent engineering, rail, IT, and facilities services business with a deserved reputation for excellence. They offer integration from the outset of a project, from planning and design through the supply chain, to offsite manufacture, installation, and maintenance.

NIBE has manufactured energy-efficient and sustainable climate solutions for homes. They combine renewable energy with new smart technology to offer effective solutions so that we can together create a more sustainable future.

Nidec Motor Corporation (NMC) is a manufacturer of commercial motors, industrial motors, appliance motors, and controls. They provide ECM, single and three phase motors from fractional horsepower to thousands of horsepower for HVACR and other applications.

It doesn't take an ocean to deliver efficient and effective cooling solutions, but a responsible cooling solution could save an ocean's worth of water. NIMBUS® Advanced Process Cooling is dedicated to providing smart cooling solutions to facilities and operations ready to BE BLUE by reducing water consumption and protecting the world's most precious resource.

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.

As a manufacturer of duct products for environmental filtration systems, Nordfab Ducting are proud to help supply clean air for workers and equipment in workplaces of all sizes and types. Their ducting is an integral part of dust, mist, and fume collection systems around the world.

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.

Nordicco's large HVLS fans ensure superior air flow, significant energy savings and a better indoor climate in buildings all over the world, and especially in Europe. At Nordicco A/S, the develop fans between 1.5 and 7 meters in diameter - and everything in between. Their fans cover the entire palette of desires; from built-in disinfection systems to particularly challenging environments.

The Norman Economic Development Coalition is dedicated to expanding the economic base of the Norman community, enhancing the earning opportunities of area residents by retaining and expanding existing businesses and industries, as well as attracting desirable new employers that are consistent with Norman's high quality of life.

Norman S. Wright provides customers with exceptional systems knowledge to meet all project requirements. They represent HVAC manufacturers worldwide, and their product lines support the latest energy, sustainability and comfort standards.

Northern Air Mechanical offers air conditioning repairs, installs, ventilation, refrigeration, ductwork, and all other HVAC installation/repair services - both commercial and residential - to homeowners and businesses across the East Valley including San Tan Valley, Queen Creek, Mesa, Chandler, Gold Canyon, and Apache Junction.

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%.

NOW Specialties, Inc. is the exterior wall system designer, fabricator, and installer in Texas. NOW was the first ACM fabricator, and is still the only MCA Premium Fabricator in Texas. They provide fabrication solutions for the installation of barrier systems, rainscreen systems, louvers and much more.

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.

NS Aircon is the best AC, refrigerator, microwave oven, and washing machine repair and service center in Vasai, Virar, and Nallasopara regions in Mumbai. They provide 24/7 service and assistance can be presented in 1 hour at the doorstep. Their qualified engineers use their huge business knowledge to quickly identify problems and resolve them in low-end estimates.

Nu-Air designs and manufactures high quality heat recovery ventilators (HRV's), energy recovery ventilators (ERV's), air handlers and vertical fan coils with integrated H/ERVs. Their primary markets are commercial, residential, multi-unit residential and institutional.

NUPI AMERICAS, INC. was founded in 2001. It is located in Houston, TX where it established a warehouse and production facility. Another warehouse and operations centre is located in Early Branch, SC. NUPI Americas is responsible for sales and marketing activities for the Americas and now also has 2 production lines. It also expanded the use of multilayer technology to the upstream market developing a specific product for flow line applications.

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.

Oahu Air Conditioning Service (OACS) provides the highest quality air conditioning service to commercial customers of all sizes. They provide preventative maintenance and repair services to office buildings, hotels, condominium associations, banks, shopping centers, airports, hospitals, and various state and government buildings throughout Hawaii.

Oakwood Homes, a Berkshire Hathaway company, has always built, sourced and stayed true to what's local. By leveraging resources and partners right here at home, they can deliver true luxury in homes at every price point - for people in every stage of life.

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.

Oceanair (Oceanair UK Ltd.) is an award-winning distributor of air conditioning and heating products. They use their wealth of industry experience to help consultants, installers and end-users achieve their objectives by developing cost effective, energy efficient solutions they trust us to deliver. They offer a complete design service for both Air to Water (A2W) and Air to Air heat pumps.

Ohio Heating and Refrigeration (OHR) provides commercial and residential HVAC, boilers, building automation, commercial refrigeration, fabrication, and food service equipment.