Waterloo Filtration Institute (WFI) is dedicated to developing advanced filtration and separation solutions for a clean and sustainable world. They have over 40 years of extensive experience in the field and aim to serve the industry with the most comprehensive Education Program for Filtration & Separation Specialist Certification, Filter Product Certification, and Research & Development.

Established in 1959, Watts Engineering Sales, Inc. is a renowned manufacturer’s representative in the HVAC business. Watts Engineering serves the needs of mechanical engineers, mechanical contractors, architects and other industry professionals as a representative for top-tier manufacturers producing top-shelf HVAC equipment. Their products include unit heaters, duct heaters, fire dampers, grilles, ceiling diffusers and fans.

Weil Pump is the premier wastewater pump manufacturer in the U.S. Weil specializes in submersible & vertical, grinder & slicer, vortex, condensate, dry-pit, and centrifugal pumps. In addition, Weil manufactures pump accessories such as control panels, level controls, basin covers, quick-removal systems, valve assemblies, and reverse-flow systems.

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.

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.

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.

XCI Zoning was founded to provide the latest and newest technologies and ideas to provide better comfort and better control of the HVAC system. Specializing in forced air zoning, XCI has designed systems that enable HVAC systems to deliver greater comfort and reduced energy consumption.

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.

Xpelair was formed in 1955 as a manufacturer of unitary ventilation products. They are renowned providers of high quality quiet fans for window, wall and roof mounting. 2-speed reversing fans for exhaust or air intake.

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.