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.

uHoo is a Hong Kong-based renowned provider of advanced indoor air quality sensor solutions. They provide software solutions and indoor air quality sensors aimed at measuring, analyzing and interpreting indoor air quality data. The company's ‘uHoo Virus Index’ is a patent-pending technology that analyzes air quality data and provides an assessment on the risk of viruses surviving in homes or workplaces.

UK Radiators, they know that buying a radiator and making sure it’s right for you can feel like an overwhelming experience. With over 30 years of collective experience in the heating sector and a passion for sustainability, they offer genuine, impartial advice on the right heating technology.

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.

Ultra Air was founded in 1999 through the enterprise and foresight of its principal, Anthony Licastro whose industry knowledge and experience saw him recognize an opportunity to improve upon the work practices. It is an Australian company providing residential and commercial air conditioning sales, installations, yearly services and corrective maintenance to the building industry and private market.

At Ultra Air HVAC, they pride themselves on providing reliable, high-quality heating, cooling, and gas appliance services to homes across Ottawa. With years of experience in the HVAC industry, their team is dedicated to keeping homes comfortable year-round. From furnace and A/C installations to emergency repairs, they deliver professional service with a 100% satisfaction guarantee.

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.

UniColorado is a locally-owned HVAC contractor that has served the Denver community for over 10 years. They are a trusted source for heating, air conditioning and electrification needs in the Denver, Centennial & surrounding areas. Their experienced professionals specialize in heat pump installation and furnace installation, ensuring the living space remains warm during the chilly winter season.

United A/C Supply is a distributor of HVAC/R products in Houston, Texas. They deal with all Air conditioning, Refrigeration, Heating and Ventilation needs and represent all major manufacturers.

United CoolAir Corporation manufactures 1 to 90 ton "All-Indoor" Modular HVAC Solution systems for Commercial and Industrial Cooling as well as 100% Outside Air applications.

United Refrigeration, Inc. is one of the largest distributors of refrigeration, air conditioning and heating parts and equipment in North America.

United State Solutions is a licensed home improvement contractor operating in Florida, specializing in energy-saving solutions and comprehensive home improvement programs. As a seasoned contractor in the state, they provide a range of services, including AC installation and repair, air duct replacement, attic insulation, roofing services, and energy-efficient window installations or replacements.

United Supply Company has been providing homeowners and contractors with HVAC and Plumbing needs for nearly 100 years. They carry product lines from Ruud, Hart & Cooley, Honeywell, Cerro, Weil-McLain, Simpson Dura-Vent and many other brands.

Universal Air Supply is a wholesale and retail manufacturer of air-conditioning and refrigeration equipment, parts, and supplies.

Universal Supply is the trusted resource for quality building materials and services throughout New Jersey, Southeastern Pennsylvania, Delaware, Maryland and Connecticut. Their products include windows, residential roofing, siding, exterior millwork, commercial roofing, exterior entry doors, etc.

Utilidex provides a SaaS platform for some of the largest energy customers and energy suppliers in the energy market. Utilidex provides a market-renowned energy platform, handling large amounts of data, evolving to support three specialized products in energy billing, trading, and energy management, which are used by some of the leading customers and suppliers in the UK energy market.

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.

Regardless of how complex, large, or small issues may be, Valley City Mechanical has the experience and skillset required to help fix them. Their technicians can service all makes and models of equipment, ensuring all needs are effectively fulfilled, when they visit a home or business.

Valleytech Ltd is a family run company established in 2005. We provide all aspects of heating services including boiler installation, maintenance & repair.

Van Druen Heating & Air Conditioning is into air conditioning, heating solutions, indoor air quality, etc and is based out of the USA.

Vantage EMEA is a brand of Legrand. The company plans, designs and supplies HVAC products for residential and commercial purposes.

At Vantage General Contractors, they provide expert HVAC installation, repair, and replacement services in Dallas, TX. Their certified technicians use modern methods and the latest technology to deliver fast, reliable solutions for both residential and commercial customers.

VATANUCOOL is an organization having more than 16 years of experience in Design Engineering, Execution & Service of HVAC and Industrial Process Cooling Solutions and have handled more than 400 Clients from both the public and private sectors.

Vattenfall Wärme Berlin AG is a globally renowned energy solutions company, based in Berlin, Germany. They also offer a range of HVAC maintenance and installation services, including, air conditioning and refrigeration systems.

Velocity Boiler Works are manufacturers of gas-fired condensing and non-condensing boilers, oil boilers, indirect water heaters, hydronic air handlers and warm air furnaces.

VELTEK is Denmark's largest technical trade association, and represents approximately 125 companies with a total turnover of over DKK 30 billion in Denmark. They safeguard the interests of the industry and members by facilitating subject-related knowledge and advising on industry-relevant matters.

Vendigo is the provider of a point-of-sale financing to the home improvement industry connecting consumers, merchants and lenders. We want to offer consumers the highest approval rates and the best loan terms by partnering with market leading banks and other lending institutions.

Veneta Componenti provides air filtering and HVAC solutions and is based out of Italy.