Ritchie Engineering Company, Inc. is a leading worldwide supplier of U.S. designed and manufactured tools and equipment for the HVAC/R and automotive industries. We are committed to providing our customers with innovative quality products, ongoing training and education, and superior service. We continually strive for excellence while developing and nurturing successful relationships through honesty, trust and respect. YELLOW JACKET® has been in the business of manufacturing HVAC supplies and refrigeration supplies for over 70 years. HVAC tools that stand the test of time. Refrigeration tools that are engineered to be the best. It’s all we do, and we set the standard.