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.

Established in 1992, West Coast Chief Repair have served Los Angeles and the surrounding areas for over a quarter of a century. They are proud to be the go-to company for many homes, businesses and apartment blocks from Malibu to West Covina and Long Beach to Lancaster. The company provides solutions like Air Conditioning, Heating, etc and is based out of USA.

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

Wilson Energy Ltd is one of the UK's pioneering providers of fully integrated Heating, Metering, Pre-Payment, and Billing & Bureau Services for residential homes and commercial developments.

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.

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.

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.

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.

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.

Zeds Air LLC offer expert AC and heating services in West Houston. They can solve varied air conditioning or furnace issues in homes and commercial properties! Their team specializes in HVAC repair services, such as heating repair, cooling repair, and AC installation services.

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.