Johnstone University, part of the Johnstone Supply operated by the McCall Group in Houston, is a pivotal institution for HVAC/R education in the Greater Houston and Beaumont-Port Arthur areas. As a WBENC-certified woman-owned business and certified Texas HUB, this branch showcases a dedication to inclusivity and professional growth. The university offers a well-rounded curriculum that includes technical training, business skills, customer service, and safety and compliance. Classes may provide NATE continuing education credits, enhancing the professional development of HVAC/R technicians.

The program benefits from the expertise of instructors who not only have a wealth of real-world experience but also facilitate crucial industry certifications like the EPA 608, complete with study guides and exam proctoring. Coupled with the national accreditation by PAHRA, it underscores a commitment to delivering top-notch, industry-recognized training. With a blend of in-person and online classes, as well as resources like technical service representatives, Johnstone University stands out as a comprehensive training hub tailored to meet the specific needs of local HVAC/R contractors.