UNICO Inc. is the maker of The Unico System which is a small-duct, high-velocity central heating and air conditioning system.

The Unico System is a small-duct, high-velocity central heating and air conditioning system. Ideal for custom & new home construction, historic preservation, older home retro-fit, and commercial applications, The Unico System takes less than one-third the space of a traditional HVAC system.

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 Technologies Corporation provides technology products and services to building systems and aerospace industries worldwide. The company's UTC Climate, Controls & Security segment offers electronic security products, including intruder alarms, access control systems, and video surveillance systems; and fire safety products, as well as systems integration, video surveillance, installation, maintenance, and inspection services.

Uniweld Products, Inc. is a U.S. manufacturing company that deals with gas, soldering, brazing, heating and welding equipment and accessories, test equipment, pressure gauges, alloys, manifolds and charging equipment, leak detectors, vacuum pumps, tubing tools.

USA Industries is an ISO 9001:2015 manufacturer and supplier of piping isolation and testing products, tube plugs, orifice plates, and tools for heat exchangers for rental or sale.

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.

Vapor Power is a market for commercial boilers and industrial boilers. Our six distinctive product lines provide steam generator, thermal fluid heater, hot water and superheated steam solutions, to meet every industry need and application.

VENTS manufactures residential and commercial centrifugal, axial, mixed flow ventilation fans and recovery ventilators. They provide unique, innovative solutions such as single room recovery ventilators.

Vesta.DS, Inc. was established in 2016 to promote condensing tankless water heaters, combination boilers and heating boilers specifically designed for North America The products are manufactured in South Korea by Datsun Celtic, a company founded in 1982 that introduced European-style gas boilers into the Korean market. Today, their energy efficient products are sold throughout the world. To better serve industry, Vesta has regional sales

At Victory Energy, we’re relentlessly committed to serving diverse industrial and institutional markets by delivering innovative boiler, burner and heat recovery products, solutions and services that address the environmental and societal concerns of today, tomorrow and well into the future.

Viega LLC is a globally renowned provider of pipe fittings for plumbing, hydronic radiant heat, snow melt and marine applications. Their solutions portfolio includes Viega ProPress, Viega MegaPress, Viega PureFlow System including PEX and fittings, as well as MegaPress CuNi and SeaPress systems, ProRadiant heating and cooling systems, and in-wall flushing technology including carriers and flush plates.

The Viessmann Group is a globally renowned company that manufactures heating, cooling and climate control technology and solutions. They provide heating systems, industrial systems and refrigeration systems for commercial and industrial applications.

Established manufacturer of industrial refrigeration compressors, systems, and industrial heat pumps. Leading producer of reliable and energy efficient single screw compressors.

VKK - Vaasan Kuljetuskanavat Oy is a plant supplier of heat and steam production plants operating on biofuel - one of Finland's operators. Vaasa's Kuljetuskanavat specializes in deburring of the mechanical wood processing industry and transport and handling systems for various materials in demanding industrial environments. Together, the companies form the VKK Group Oy group.

Established in February 2001, Voltex continues to achieve rapid, consistent growth by focusing on compliance, high performance and reliability, with an unflinching commitment to looking after electrical contractors, the guys that do the work. They are a 'manufacturer to end-user' company, controlling everything from design right through to using only direct distribution from Voltex's own warehouses to account-holding licensed electricians.

W H Riley & Son provides their customers with all their heating and cooling needs. They provide installation & service for heating & cooling systems-boilers, furnaces, central & split system air conditioners, water heaters, generators, pool heaters and much more.

Water Heaters Now is the go-to water heater installation company for same-day service. They specialize in water heater replacement, tankless water heaters, and commercial water heaters. Their team provides the best professional-grade units for their customers.

Wateraid UK are determined to make clean water, decent toilets and good hygiene normal for everyone, everywhere within a generation. By inspiring people and sparking chain reactions, they help deliver lasting change. By working closely with partners internationally and on the ground in some of the toughest places in the world, they have helped millions of people take control of their lives and build better futures.

Manufacturer of geothermal and water source heat pumps for all applications. WaterFurnace combines sound engineering with the highest level of quality control and innovation.

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.

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.