Johnstone Supply

Johnstone Supply has served Oxnard and the broader Ventura County heating equipment market for over two decades, establishing itself as a go-to supplier for contractors and homeowners seeking quality HVAC components. With a 4.5-star rating drawn from eight customer reviews, the store has built a reputation for maintaining high stock levels of tools and specialty parts that competitors often cannot match. Located in Oxnard, the business Monday through Friday from 7AM to 5PM and Saturday mornings, Johnstone Supply serves a service area spanning Oxnard, Ventura, and surrounding communities within Ventura County.

What sets Johnstone Supply apart is their extensive inventory of specialty parts and their commitment to helping customers find hard-to-locate components. The store carries a full line of HVAC equipment including single packaged units, split systems, mini-split systems, multi-zone and single zone configurations, variable capacity systems, air handlers, evaporator coils, gas furnaces, and oil furnaces. Their commercial and residential unitary selection includes manufactured housing solutions and field-installed accessories, with extended warranties available on select products. The store maintains a clean, organized layout with a broad stock of high-quality tools and installation accessories that draw repeat customers over decades of operation.

Named technicians appear frequently in positive reviews, with Tino receiving consistent praise for exceptional customer service and diagnostic skill. One reviewer describes Tino as the best customer service experience this side of the Mississippi, highlighting the technician's ability to help find specialty parts other stores could not locate. Another customer notes their experience with Johnstone has always been excellent, pointing to reliable service on equipment maintenance and repairs. The single one-star review references a dispute over wrongly selected parts and an unhappy interaction with a manager, contrasting with the overwhelmingly positive feedback that names specific team members.