EST. 1946

At Leonhardt, we represent the finest products in the commercial HVAC industry, including air distribution, air flow measurement, and energy metering—and we've been doing for over 65 years.

It was 1956 when Leonhardt Company established one of the first independent testing, adjusting, and balancing (TAB) companies in the United States. As the industry leader, we continue to provide unparalleled service and innovative solutions to businesses throughout New England.

We proudly represent:
products we represent: AJ Manufacturing, Anemostat, KEES, Onicon, Raymon-Donco, TABB, Tamco, Tuttle & Bailey, Zip Group