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.

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.

William Tao & Associates, Inc. (WTA) is a multi-discipline engineering firm providing innovative services in engineering and energy-effective building systems. WTA provides a wide range of engineering services including mechanical, electrical, plumbing, fire protection, building automation, structural, civil, master planning, and commissioning

Wilo USA provides pumps and pump systems for heating, refrigeration, air conditioning, water supply and sewage. Wilo pumps are used in all areas of public life: in commercial buildings, communal facilities, industry and in private homes.

Windy City Air Conditioning & Heating, LLC. services Las Vegas, Henderson, Green Valley, Summerlin, North Las Vegas & Boulder City. They specialize in providing Las Vegas AC repair & heating, commercial refrigeration, sales, service, repair, and installation.

Wittichen Supply Company is a wholesale distributor providing the best in class HVAC/R equipment, parts, and supplies to licensed HVAC/R contractors in the Southeastern United States

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.

Wm. W. Meyer & Sons, Inc. are renowned manufacturers of commercial and industrial vacuums for cleaning ducts, boilers, furnaces and chimneys in residential, commercial, institutional and industrial applications.

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

Wolseley UK is a plumbing, heating and cooling trade specialist merchant. They specialize in the distribution of plumbing, heating and building materials, logistics, supply chain, procurement, e-commerce, wholesale trade, retail, customer service, plumbing, heating, cooling, infrastructure, drainage, and pipes.

Women in HVACR was organized exclusively for educational purposes to further the growth of women in all areas of the HVACR industry, including technical, sales, management and ownership. Women in HVACR holds it's annual conference in conjuntion with Comfortech each year.

At Woodward Heating, their highly skilled technicians are committed to providing users with the highest quality of care possible. This includes discussing with users all their available options and helping them come to a well-informed decision.

World Environment Center is an independent, global non-profit, non-advocacy organization that advances sustainable development through the business practices of member companies and in partnership with governments, multi-lateral organizations, non-governmental organizations, universities and other stakeholders.

The World Plumbing Council (WPC) is an international organization which aims to develop and promote the image and standards of the plumbing Industry worldwide. World Plumbing Day is an international event on March 11 every year, initiated by the World Plumbing Council as a means of highlighting the important role plumbing plays in the health, safety and sustainability of the community.

Worthington Industries are renowned US-based provider of hand torches, fuel, solder, braze and accessories. Non-refillable and refillable portable refrigerant cylinders, recovery and recyclable cylinders, and high pressure industrial gas cylinders.

Wrightsoft Corp. offer easy to use, drag-and-drop HVAC design and sales software that combines both residential and commercial loads, CAD-quality ducts, proposals and in-home sales tools.

WSM Industries is a wholesaler and manufacturer of sheet metal, HVAC and specialty products. They also deal with heating, ventilation and air conditioning supplies and manufacture pipe, duct, spiral pipe and fittings, and carry a comprehensive supply of flat sheets, venting, registers and grills, insulation supplies, and Ducane equipment and linesets.

XNRGY engineers and manufactures HVAC systems focused on low sound and vibration levels, data center efficiency, and power usage effectiveness while supporting LEED certification in a wide range of applications.

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.

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.

Stainless steel and aluminum chimney liner in both flexible and rigid; Z-Vent special gas vent pipe CAT II, III, IV. 3 gas fired heating; OEM manufactured product for all heating equipment.

Zehnder Rittling offers Fan Coils. Their solution for efficient and energy-saving heating and cooling is the simple to install. Zehnder Radiant Ceiling Panels and Rittling Induction Units represent an energy-efficient heating and cooling solution.

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.

Zimmer's Heating & Cooling business has expanded to include residential, retail, and commercial heating and cooling.

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.