Twinco, designs and supplies the temperature control systems on thousands of projects for the major HVAC Mechanical Contractors. These projects include schools, financial institutions, office buildings, residences, government facilities, theaters, retail stores, factories and hospitals.

U.S. Climate Alliance states are committed to taking real, impactful, on-the-ground action that urgently addresses the climate challenge. In becoming an Alliance member, member states commit to achieve the Paris Agreement’s goal of keeping temperature increases below 1.5 degrees Celsius globally.

The mission of the Department of Energy is to ensure America's security and prosperity by addressing its energy, environmental, and nuclear challenges through transformative science and technology solutions.

Around the globe, UL works to help customers, purchasers and policymakers navigate market risk and complexity. UL builds trust in the safety, security and sustainability of products, organizations and supply chains – enabling smarter choices and better lives. Their robust suite of offerings includes testing, inspection, auditing, certification, marketing claim verification, training, advisory services and software solutions.

Uncle Mike’s Home Service is the go-to AC repair and Installation service provider in Lincroft, New Jersey, USA. They understand the importance of maintaining a comfortable and well-functioning home environment. With years of professional expertise, their team is committed to delivering top-notch HVAC solutions tailor-made to suit specific needs.

The Unico System is a small-duct, high-velocity central heating and air conditioning system. Ideal for custom & new home construction, historic preservation, older home retro-fit, and commercial applications, The Unico System takes less than one-third the space of a traditional HVAC system.

Founded in 2003, Utilita was created to challenge the Big 6 energy suppliers by empowering everyone with a fair and flexible service that’s good for the pocket and planet.

UV Resources are a globally renowned company in UV-C disinfection and HVAC efficiency. They help disinfect airstreams, mitigate disease transmission, and kill microbial contaminants that impede HVAC efficiency. Company founders pioneered the application of UV-C energy in HVAC equipment nearly 25 years ago. Currently, they supply market-renowned germicidal UV solutions to facility managers and building engineers around the world.

In more than forty-five years since their founding in an old onion set warehouse in South Holland, Van Drunen Heating and Air Conditioning’s goal has remained the same, taking care of people.

The services of Vaughn Industries have grown into the industrial/commercial sectors, including electrical, mechanical (HVAC and Pipefitting), plumbing, and high voltage substation, high voltage transmission and distribution construction. They provide High Voltage Transmission and Distribution, High Voltage Sub Station, Commercial/Industrial Mechanical/HVAC, Commercial/Industrial Electrical, Renewable Energies, and Preventative Maintenance.

Ventilation Power Cleaning is one of the largest industrial vacuum cleaning company's in the state of Washington. VPC offers a wide range of specialized services to meet the customers’ cleaning needs. When it comes to industrial cleaning and related services, choose the company with over 45 years of experience in the industry, knowledgeable employees, and state-of-the-art equipment.

VDMA is an association that represents the common economic, technical and scientific interests of the mechanical engineering industry, especially towards national and international authorities and business circles.

Verdant is one of the major HVAC manufacturers and suppliers in the United Arab Emirates (UAE). They provide a wide range of products and with their flexible manufacturing system, they also offer customization as per their customers requirements at very competitive prices. Verdant Industries aims to be the most reliable and innovative company in the field of HVAC and building equipment by providing the best solution and services.

Veto Pro Pac tool bags are designed for technicians and tradesmen who consider themselves professionals, take pride in their work, and appreciate high-quality tools and tools bags that can stand up to the rigors of their daily work. Veto Pro Pac offers tool bags and tool storage solutions for all trades, including HVAC/R technicians, electricians, plumbers, A/V and security technicians, MRI technicians, carpenters, and marine technicians

Vilair – specialized supplier of air filtration products, cleanroom equipment, dust, mist and fume control systems. Downflow containment booths and laminar flow units are manufactured in Australia and fitted with Vilair HEPA and ULPA filters.

Vilandre Heating, Air Conditioning & Plumbing has been providing dependable, reliable and guaranteed service to Grand Forks and also the surrounding counties. Their main objective is to offer superior quality HVAC and plumbing services to our customers.

VironAire is an air purification equipment manufacturer based in Palm Springs, CA. The company recently developed a self-contained and portable HEPA (H13), UV and Charged-Ion air purifier that also incorporated photocatalysis, molecular sieve and other cutting-edge tools.

Established in February 2001, Voltex continues to achieve rapid, consistent growth by focusing on compliance, high performance and reliability, with an unflinching commitment to looking after electrical contractors, the guys that do the work. They are a 'manufacturer to end-user' company, controlling everything from design right through to using only direct distribution from Voltex's own warehouses to account-holding licensed electricians.

W H Riley & Son provides their customers with all their heating and cooling needs. They provide installation & service for heating & cooling systems-boilers, furnaces, central & split system air conditioners, water heaters, generators, pool heaters and much more.

Waterloo Filtration Institute (WFI) is dedicated to developing advanced filtration and separation solutions for a clean and sustainable world. They have over 40 years of extensive experience in the field and aim to serve the industry with the most comprehensive Education Program for Filtration & Separation Specialist Certification, Filter Product Certification, and Research & Development.

Watsco Inc. is the distributor of air conditioning, heating and refrigeration equipment and related parts and supplies (HVAC/R) in the HVAC/R distribution industry. Watsco’s goal is to build a network of locations that provide the finest service and product availability for HVAC/R contractors, assisting and supporting them as they serve homeowners and businesses.

Watts Water Technologies is a pioneer provider of quality water solutions for residential, industrial, municipal, and commercial settings. Their family of brands offers one of the most varied product lines in the world, with world-class, water-related solutions focused on: Plumbing & Flow Control, Water Quality & Conditioning, Water Reuse & Drainage, HVAC and much more.

WDF Inc. (founded in 1929) is one of the plumbing, HVAC contracting and specialty general contracting companies. They have joined with Five Star Electric Corporation and Nagelbush Mechanical to form GreenStar Services Corporation as a diversified full service construction company.

Western Allied Mechanical has been a pioneer in the construction industry for 50+ years as a mechanical contractor that specializes in design/build for bio-tech, high tech; retrofit and replacement; LEED and Green projects; and HVAC service and maintenance.

Wholesale Heating Supply Co. are US-based renowned distributors of quality heating and cooling products. They are specialists in furnaces, air conditioners and hot water heaters, sheet metal and filters.

Winsupply Inc. is a supplier of residential and commercial construction and industrial supplies and equipment headquartered in Dayton, Ohio. They conduct business-to-business wholesale distribution of supplies and equipment in plumbing and heating; hydronics; pipe, valves and fittings; HVAC and refrigeration;

WM Buffington Co. is a family-owned business that has been providing quality heating and cooling services to the Central Pennsylvania area since 1952. For 66 years, their team of experts have dedicated themselves to providing fast, professional work with superior customer service.

Wolfe Innovations prides itself in being the best overall in HVAC customer service, low competitive prices, and trustworthiness.

Xtralis provides advanced fire detection for refrigerated storage. Xtralis is the global provider of powerful solutions for the very early & reliable detection of smoke, fire, and gas threats. They protect highly-valued and irreplaceable assets and infrastructure belonging to the world’s top governments and businesses.

Yandle-Witherspoon Supply, Inc. strives to offer impeccable customer service while developing long lasting relationships through business partnerships formed with the HVAC contractor. Providing quality product, a vast array of value added services, education, training, friendly employees and competitive prices allows Yandle-Witherspoon Supply, Inc. to be a major force in the HVAC industry in North and South Carolina.