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.

National Comfort Institute, Inc. (NCI) is an organization that provides heating, air conditioning, plumbing and electrical contractors with a focused offering of services and tools to help them improve their businesses, differentiate themselves, grow, and become more profitable. NCI accomplishes this through membership groups and by providing unique business management, sales, marketing and technical tools, training, support and coaching.

An ANSI-accredited Standards Developing Organization, the National Electrical Manufacturers Association (NEMA) gives members a competitive edge in today's rapidly changing marketplace by expanding market opportunities, acquiring exclusive business intelligence, removing market barriers, building supply chain connections, and harnessing innovation.

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.

NB Heating & Air Conditioning installs, maintains and repairs residential and light commercial Heating – oil, gas, electric, boiler, and radiant Air conditioning – electric, heat pump and gas Air quality systems – filtration, UV, whole house solutions We provide services throughout Central and Northern Virginia.

Neal's Heating & Air is a family-owned company that services all types of residential and commercial comfort systems. It has continued to offer custom design layouts, installation, and service of all makes and models.

Neese-Jones Heating & Cooling is located in Alpharetta, Ga. Just 30 miles north of Atlanta. Concentrating solely on the repair, maintenance, and installation of air conditioning, heating, and also indoor air quality systems allows them to excel in the industry.

Trust Nelke Mechanical Heating & Cooling with any HVAC system and customers will never encounter a bunch of grouchy contractors just trying to make a buck. Their company is backed by over a decade of HVAC experience, and they’re the best at what they do. Committed to the comfort and safety of their customers, the company's mission is to provide superior, speedy, affordable, and responsive HVAC expertise.

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

Nester Heating and Air Conditioning is a full-service Heating, Ventilation, and Air Conditioning (HVAC) services contractor operating in San Diego County and neighboring areas. It provides commercial and residential heating and cooling services, which include: installation, troubleshooting, repair, maintenance, tune-ups, as well as pull-out and safe dismantling of damaged or old heating and cooling units.

NetX's mission is to deliver user-friendly HVAC solutions with powerful time and energy savings features to their institutional, commercial, and industrial customers.

New Balance A/C Inc. provides residential and commercial heating and air conditioning repair, replacement, design, and installation services.

New Berlin Heating & Air Conditioning provides solutions like heating, cooling, air quality, etc and is based out of the USA.

At New Vista Heating & Air Conditioning Inc, they're a local heating & air conditioning company that's been providing top-tier heating & cooling services to Elk Grove Village, Schaumburg, and all surrounding suburbs for over 19 years.

Newby & Son Heating & Cooling Inc. is a licensed, bonded and insured firm committed to offering HVAC services with an edge. They have been assisting residential and light commercial firms since the inception. We are also the members of Better Business Bureau. We install and service HVAC equipment such as water heaters, whole house air cleaners and humidifiers.

NewCool is a reliable aircon servicing company located in Singapore, providing various excellent aircon servicing at an affordable price, ranging from aircon servicing and maintenance to top up gas, installation and other support services in Singapore. They provide efficient and stress-free services for our customers to enjoy a cold as a result to completely relax their body throughout the day.

Newsome is a temperature and humidity control expert, specializing in process cooling, drying systems, air conditioning, and refrigeration. Newsome offers an unbiased insight into an extensive range of temperature and humidity control solutions.

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.

Nick Dolinic provides solutions like furnace installation & repair, air conditioning, air quality services, etc, and is based out of the USA.

Nimmer Heating & Air Conditioning is a family-owned company that has been dedicated to helping southeastern Wisconsin homeowners enjoy safe, comfortable homes for over 30 years. They provide the latest in home heating and cooling comfort to maintenance plans and repairs. Also, deliver top-quality affordable products and prompt professional service.

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.

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.

Established in 2009 by Nicholas and Linda Bobel, NLB Heating & Cooling is a family-owned and operated business. They are the premier HVAC Contractor in the Joliet and Plainfield, Illinois area in the United States of America.

Nor-Cal Products has manufactured the highest quality vacuum chambers, components and engineered subsystems used in semiconductor, flat panel display, industrial coating, LED lighting, energy and research equipment.

NordDisk delivers services and equipment to the professional market within refrigeration, freezing and climate. They are the main supplier of Freor refrigeration and freezing counters for shops. They tailor solutions and take total projects from A to Z within store cooling, climate or small industrial plants.

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.

N.V.g specializes in everything within ventilation and has strong in-house production, close to where all the project's value creation processes must be complied with, as the last link in the phases.

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.