Johnstone Supply in Woburn, MA specializes in providing HVAC equipment parts and supplies to contractors and businesses. Their wide range of products includes single packaged units, split systems, furnaces, air handlers, refrigeration components, motors, tools, thermostats, ventilation systems, and more. With a focus on quality and reliability, Johnstone Supply aims to meet the needs of their customers in the heating, ventilation, air conditioning, and refrigeration industry. They strive to offer top-notch products and services to ensure customer satisfaction and success in their projects.