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.

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.

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.

With more than 70 years of experience, Novenco Marine & Offshore is one of the largest high-quality heating, ventilation, air-conditioning and refrigeration system suppliers to the marine and offshore industry.

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.

NSI brands bring seventy years of expertise in the HVAC industry, from tools and adhesives to machinery designed to make insulation fastening efficient and trouble-free.

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.

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.

Oakes Energy Services Ltd (Oakes Energy) designs and installs both commercial and domestic renewable energy systems. In turn, dramatically reducing the cost of energy consumption and enabling the business or home to save thousands of pounds on their energy bills. Oakes Energy Services Limited was established in 2007 with the aim of offering customers an alternative, more sustainable approach to their energy needs.

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.

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.

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.

Octopus Energy drives system change: with transformative tech to make renewable energy the norm and end global reliance on fossil fuels. Octopus Energy Group is made up of 10 businesses spanning 6 countries across 3 continents, including: Octopus Energy Retail, Kraken Technologies, Octopus Energy Generation, Kraken Flex, Octopus Electric Vehicles, and the Octopus Centre for Net Zero.

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.

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.

Omdia unifies and harnesses the depth and breadth of expertise from Informa Tech’s legacy research brands: Ovum, IHS Markit Technology, Tractica and Heavy Reading. They offer unparalleled, world-class research and consultancy to navigate the now and create the future.

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.

Since 1822, Oneida Royal furnaces have been engineered for home heating comfort and efficiency. Designed for performance and built to last, they are top performers in home heating with innovative design features that will deliver years of dependable heat to your home.

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.

OxiCool, Inc. is a Pennsylvania based company that develops air conditioning technologies which are widely in use in commercial and military spaces. The company is dedicated to developing environmentally friendly cooling technologies that have low operating and maintenance costs.

Pacifica Home Services Ltd. provide a wide range of HVAC and home improvement services in the region of Houghton Le Spring, in Sunderland, in the United Kingdom.

Panasonic is the premier manufacturer of powerful, energy-efficient ventilation fans and indoor air quality solutions. We produce the highest quality, code compliant solutions available in the market today.

Panduit creates leading-edge physical, electrical, network infrastructure and AV solutions for enterprise-wide environments, from the data center to the telecom room, from the desktop to the plant floor. Panduit is headquartered in Tinley Park, Ill., USA and operating in 112 global locations.

Parakeet provides enterprise solutions for multi-dwelling unit owners/managers to improve the resident experience and decrease expenses using their smart home automation technology. Their system allows for centralized remote access control of primary property functions like HVAC monitoring, door locks, garage doors, thermostat as well as freeze/flood sensors.