Pro Temp Air DFW is a locally-owned and operated HVAC company servicing Dallas-Fort Worth Metroplex and the surrounding areas. The company was built on the following mission statement: To be recognized in DFW as the most professional HVAC services company and to ensure their indoor air quality comfort experience all year round.

PART provides IAQ specialty cleaning services to commercial and industrial clients throughout the Midwest and has conducted numerous large projects in the Eastern United States. PART’s management team and project supervisors are certified members of the National Air Duct Cleaners Association (NADCA).

Project Air Conditioning can provide installation, consulting, and contracting services in heating and cooling systems including split and ducted reverse cycle, ducted evaporative cooling, gas space heating, ventilation, and air purification systems.

Prolojik is an innovative business that enables specifiers, installers and users of lighting controls to harness its extensive network for other purposes.

ProtoCool has evolved to offer air conditioning and ventilation to homes and businesses across the south, specializing in keeping families comfortable all year round.

Proximity Systems, Inc. is a globally renowned provider of innovative health care furniture and HVAC technology solutions. From hospital examination rooms to training centers and airports, the company's diverse line of wall-mounted workstations, UVC disinfection devices, medicine cabinets, retail kiosks, and modular units enable caregivers, customers, and technology to interact in a safe, seamless, and effective manner.

Pueblo has grown to one of the largest, most multifaceted mechanical contractors in Arizona. It performs a broad offering of HVAC, Plumbing, and Controls installation, maintenance, and repair services for governmental, industrial, commercial, and healthcare facilities throughout Arizona.

Pump Systems LLC is a distributor of Water and Wastewater Equipment providing sales, service, and repair throughout the State of Ohio. Headquartered in Medina, OH, they focus on providing the best solutions for the municipal, commercial, and industrial markets.

PureAC is the first automated disinfecting device for window & wall-mounted air conditioning and heating systems that instantly kills and inhibits mold, mildew, bacteria, and germs. It's the perfect solution for in-between professional servicing.

Qolsys Inc is a pioneer residential and commercial security and smart-home manufacturer. They provide smart thermostat, video monitoring, energy management and home automation.

Quality Comfort Home Services (formerly Quality Comfort Heating & Cooling) based in Cincinnati, OH offers a diverse range of HVAC services to residential and light commercial clients. Their expert HVAC services include air conditioner and furnace repair, heating and cooling maintenance, new furnace, heat pump or AC installations, ductless mini split ACs and more.

Qualityair Engenharia started offering maintenance services in building installations, covering the areas of Air Conditioning, Electrical, Hydraulics and Civil. They provide Building Maintenance, Engineering, HVAC Maintenance, Technical Assistance in Air Conditioning, Air Conditioning Installation, Maintenance in VRF System.

Quantech has a proven track record of delivering high-performance chillers with speed, efficiency, and reliability in mind. They are led by the customers and work tirelessly to provide optimized HVAC solutions that address the facility needs. They provide smaller, lighter, quieter chillers resulting in lower installation costs.

QEL is a pioneer in manufacturing toxic and combustible gas detection equipment. With a diverse product offering, they are able to satisfy both commercial and industrial toxic and combustible gas detection applications.

Quest Controls Inc. is a leading designer and manufacturer of intelligent automation systems (hardware and software) for small, medium and large buildings intended to deliver major energy savings. Quest provides telecommunications with remote monitoring for power and battery capacity, control of main door access, intelligent lead/lag, control and monitoring of HVAC systems, gas monitoring, telephony equipment monitoring, environmental monitoring,

QuietCool - QC Manufacturing, Inc is a manufacturer of the patented QuietCool whole house ventilation system - a quiet and energy efficient companion appliance - or alternative to - expensive air conditioning usage.

Quilt offers AI-driven efficiency and room-by-room control, all while leaving fossil fuels behind.

R. Williamson & Associates has been providing industry with clean, comfortable air. They provide an interactive experience, having engineers and technical sales representatives on staff with more than 135 years of air systems design experience.

RAKtherm, the piping solutions provider with global distribution networks is under the flourishing arm of renowned group Hashim Industry since 1963. Manufacturing the world’s most versatile and comprehensive piping solutions for diversified applications conformed by the international certifying bodies of CSTB, DVGW, SKZ, HY, CARSO, and TUV.

Ranger Pumps is a privately held corporation that was founded in 1989 in Memphis, Tennessee. Ranger has become a domestic and international pump supplier. They pride themselves on manufacturing pumps in the USA from parts made in the USA.

Ronald Chambless has owned RC's A/C & Heating since 1994 when he began his company from his home functioning from the back of the little Mazda pickup.

Reece Group offers a wide variety of products to reputable brands supplying mechanical services, air conditioning, spare parts and heating and cooling. They also provide dedicated support and technical expertise for their products.

Reedy Industries is a rapidly growing commercial HVAC and building controls company that is transforming the industry. Founded in 1930, we’ve grown by providing exceptional service and unprecedented opportunities for HVAC company owners, their employees, and customers.

Refra is a well-known manufacturer of refrigeration and air conditioning equipment in Europe. Distinguished by a highly complex and unique offer of refrigeration products, the company can design and manufacture non-standard products, fully customized and completed according to customer requirements. Refra has firmly established itself in the European refrigeration market.

Refrigerant Services provides refrigerant collection, reclamation and disposal of surplus refrigerants and maintains a large inventory of refrigerant recovery cylinders. The Company has since developed a number of patented and patent pending technologies for the reprocessing of refrigerants.

Refrigeration Design Technologies (RDT) designs and manufactures refrigeration systems for food service operations. RDT has equipment in many restaurants, hotels, casinos, universities, hospitals, prisons, corporate dining facilities, sporting stadiums and theme parks.

REFTECO offers a wide range of tailor made chillers suitable for industrial refrigeration, commercial refrigeration and process cooling (oil & gas industry, ice rinks, etc.). The product lines are available for indoor or outdoor installations and for ammonia or HFC refrigerants. All product ranges are designed to provide low energy consumption, reduced refrigerant charge and low maintenance cost.

RegaVent offer a range of MVHR units, ducts and accessories to suit a range of projects and construction types. Rega offer a free no obligation design service, just send plans of the project and they will produce a layout and quotation specific to their requirements.

Reliable Controls Corporation specializes in the design and manufacture of internet-connected building controls and green BACnet building automation systems. They provide simple, flexible, and sustainable controls which balance the comfort, efficiency, and greenhouse gas reductions of commercial buildings all around the world.

Reliable Heating & Air has been serving all of Metro Atlanta's communities offering heating, cooling, plumbing, and electrical services, indoor air quality, duct cleaning, insulation, and home and building performance for both residential and commercial customers.