Welcome to the
KOTZA International Website

Established in 1990, KOTZA International specializes in producing programs and manuals for refrigeration and air conditioning repair. Our products include: Refribase, Refrepair, Refridiag, Refrilec, Chilrepair and Hydraurepair software, The Repair Manual and the Refribase Manual. (See our references).

On this Website, you can :

Test your proficiency in HVAC repair (beginner or advanced).
Obtain information about our various products.
Obtain demonstration versions.
Order our products, and benefit from our current promotions.
Email the authors.