Tutco is a custom manufacturer of electric heating elements and units. They supply electric resistance heating elements for a broad range of industrial, commercial, and residential applications.

Twin City Fan Companies, Ltd. is a group of fan companies that manufacture and sell a complete range of centrifugal and axial propeller fans, power roof ventilators and related equipment. Twin city provides air handling units, air supply and filter house, HVAC systems, rooftop exhaust and many more.

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

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.

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

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.

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.

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.

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.

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.

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.

Established in 1982, Airex is a renowned Manufacturers' Representative and Distributor of HVAC products and solutions in Ontario, Canada.

Airtecnics is the vanguard of knowledge and technology in air curtains. They design and produce a complete range of air curtains for all kind of applications and installations, including high energy efficiency EC motors, heat pump direct expansion coils and multiple jets. We offer tailor made, customized finishes and exclusive design solutions. They provide basic and advanced regulation to fulfil all the market requirements.

Alif Perfect Service is the provider of AC repair, installation, and gas filling services in Noida, UP, India. With doorstep service, they cater to both residential and commercial clients.

AMWEI Thermistor Sensor design and manufacture PTC & NTC thermistors (THERMally sensitive resistors), thermistor temperature sensors probe. AMWEI started Thermistors business back in 1999, thorough successive hard work of a group of specialists in ceramic sensitive material, welding technology, packaging technology. They own core know-how in powder formula and key production technics.