Wattco™ manufactures a complete line of flange heaters, circulation heaters, tubular heaters, and immersion heating elements for a wide variety of industrial and commercial applications since 1969. It is able to provide customers with heaters and controls with exceptional, performance and reliability - making WATTCO™ the one-stop for all heating product needs.

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.

Since its beginning in 1922, Webster has grown to become a leading manufacturer of multi-fuel boiler burners for commercial heating, industrial process steam, and drying applications. Today, the company boasts numerous innovations that help its customers run cleaner, more efficient heating and thermal processes in a wide range of commercial, institutional and industrial facilities.

WEG is a global electric-electronic equipment company, operating mainly in the capital goods sector with solutions in electric machines, automation, and paints for several sectors, including infrastructure, steel, pulp and paper, oil and gas, mining, among many others.

Weil-McLain is a renowned North American designer and manufacturer of hydronic comfort heating systems for residential, commercial and institutional buildings since 1881. They provide heat exchangers, indirect fire water heaters and boilers for space heating in residential, commercial and institutional applications.

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.

American Wheatley HVAC brand products have established a reputation for providing dependable products to the HVAC industry. The Plugaroo/TDV™ is an industry standard. In addition to their complete line of tanks, strainers and valve products, they are committed to bringing the latest in HVAC technology from all over the world.

Thermostats, gas valves, ignition controls and igniters, Filter Driers, Expansion Valves, and Solenoid Valves for heating, air conditioning, refrigeration and IAQ.

Whitehead is a building services company providing the full range of mechanical, electrical and management services. They design, install, test/commission, manage and maintain buildings across the UK. Whitehead provides heating, lighting, ventilation, power and water services.

Witt, founded in 1961, manufactures a complete line of OEM unit coolers, condensing units, condensers, air handlers, coils and packaged systems. A division of HTPG.

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

According to the American Water Works Association, average daily residential water use in the United States is 27.4 billion gallons. This domestic water is used for everything from lawn irrigation to cooking, cleaning and plumbing. By that account, it’s clear that water is essential to homeowners who take great pride in maintaining and improving their homes.

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.

Complete line of HVAC&R service and installation tools including recovery, vacuum pumps, hoses, test and charging manifolds, gauges, leak detection and electronic testing equipment, and service tools.

YouGov is an international online research data and analytics technology group. The mission is to offer unparalleled insight into what the world thinks. The innovative solutions help the world’s most recognized brands, media owners and agencies to explore, plan, activate, and track better marketing activities.

Zebra HVAC makes rugged, professional diagnostic tools and parts for the HVAC and Refrigeration Service Industry. They are located near Austin, Texas and ship across the globe.

Zed-Air Heating and Air Conditioning was established in 1993, by Eric and Cindy Barron. Zed Air is an independently owned and operated company. Zed-Air Heating & Air Conditioning is a local company, and the community is very important and proud to support local charities like the Salvation Army and Mens Mission.

Zettler Controls Inc. is a US-based renowned HVACR component manufacturer with an extensive offering of relays, thermostats, transformers, heat sequencers, temperature sensors, and fan centers.

Zhejiang SinoKing Air-conditioning & Refrigeration Co.,Ltd. is one of the largest central air-conditioning manufacturer in Zhejiang Province of China. They are specialized in design, manufacture, sales and services of central air conditioning full range of products.

Zilmet is one of the oldest and largest expansion tank manufacturers in the world. Established in Italy on 1962, Zilmet is an international manufacturer of quality expansion vessels, pressure tanks and plate heat exchangers with several branches across the globe with worldwide distribution.

Zoro makes it quick and easy for all industries, professions and trades to get the tools and equipment they need. Zoro's extensive range of over 310,000 products includes everything from power tools and chemicals to personal protective equipment, from all the leading brands.