Roberts-Gordon LLC is the leading manufacturer of energy efficient, gas-fired, low-intensity infrared heating systems and controls for commercial, industrial, and residential applications.

Sid Harvey's is a multi-disciplinary distributor company with a network of 76 branches. They handle multiple renowned brands. This company remanufactures HVAC products as well.

Stamberger-Sender Assoc. Inc. covers the US States of New England, New York, Pennsylvania, New Jersey, Maryland, Delaware, Virginia and Ohio since 1947. They specialize in marketing portfolio to wholesale distributors, engineers, OEMs and installing contractors.

SustainUS is a nonprofit, nonpartisan organization of young people advancing sustainable development and youth empowerment in the United States. Through proactive education and advocacy at the policy-making and grassroots levels, they are building a future in which all people recognize the inherent equality and interdependence of social, economic, and environmental sustainability.

The HVAC Jerks weekly podcast is what anyone wouuld want to listen to between service calls, during their commute, or any time they just want to relax, but stay involved in the industry. The Boys just like having fun, with a little business and a little technical stuff thrown in to keep them honest.

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.

Zehnder Rittling offers Fan Coils. Their solution for efficient and energy-saving heating and cooling is the simple to install. Zehnder Radiant Ceiling Panels and Rittling Induction Units represent an energy-efficient heating and cooling solution.