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

WIKA is a manufacturer and supplier of industrial measurement technology including measuring instruments for HVAC applications for pressure, temperature, humidity, and air quality.

Wiles-Legault stocks a wide range of products from pneumatic controls to building automation systems. They design custom-made control panels; offer training, technical support, and more.

Pressure switches, adjustable pressure switches, pressure sensors, thermostats, reversing valves, ball valves, contactors and capacitors, filter driers, accumulators, sight glass.

Winters Instruments is a manufacturer of quality pressure and temperature instrumentation, with distribution in over 90 countries. Visit www.winters.com for more information.

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.

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.

Celebrating over 50 years of business, Yorkland Controls has roots in distributing and warehousing heating control products, such as Flame Safeguard and Burner and Boiler Management Systems. Over the past several years, they have expanded into Building Automation, Security and Lighting Integration, and Smart Building Platforms.

Young Supply Company is Michigan & Northern Ohio’s Premier HVAC/R, Food Service Equipment, and Hydronics Wholesaler. Young Supply offers products across four main sales sectors: Refrigeration, HVAC, Food Service Equipment, and HVAC.

ZONEFIRST is the first company that successfully developed and marketed HVAC Zoning Systems back in the 1950's and is today a renowned manufacturer of HVAC zone dampers and zoning systems. They provide zone control systems, automatic dampers, registers and diffusers for fresh air intake, economizers and ventilation control.

Easy to install and operate zoning, VVT and VAV systems accessed remotely over the internet or on-site from a smart phone, tablet or computer. Zonex manufactures a system for every building and every budget from a 2 zone residential system to auto-changeover bypass VAV products to support up to 400 units. Product line includes, modulating dampers and D-Fusers with a complete line of wireless thermostats along with fresh air dampers and a humidity mitigation system to meet ASHRAE 62.2.

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.