Johnstone Supply

Johnstone Supply has been serving Corpus Christi contractors and homeowners since 1977, offering wholesale heating and cooling equipment distribution. The store maintains a 4.9-star rating across 22 verified reviews, reflecting consistent quality in both product availability and staff expertise. Located in Corpus Christi, the supplier serves the broader Coastal Bend region including Portland, Robstown, and Kingsville. As a contractor-focused supply house, Johnstone Supply provides professional-grade HVAC equipment that is not available at retail home centers.

What sets this supplier apart is their rare combination of inventory depth and personalized service. Their website showcases an extensive catalog including residential and commercial packaged units, split systems, gas and oil furnaces, air handlers, evaporator coils, and mini-split systems including multi-zone and variable capacity configurations. They offer extended warranties on equipment purchases and provide online account management with cross-reference search tools, allowing contractors to quickly locate compatible parts. This contractor-only distribution model ensures professional installation customers receive proper equipment backed by manufacturer support.

Customer reviews consistently name Randy Venters and Mike Carlos as the go-to professionals when contractors need urgent assistance. One reviewer describes Randy going above and beyond to locate needed parts and getting them ordered on time during a critical project. Another mentions Mike Carlos providing exceptional help with an electric motor capacitor replacement on short notice. Multiple five-star reviews emphasize the staff will find proper replacement parts even when other suppliers come up empty, making this a trusted resource for Corpus Christi-area HVAC professionals facing complex repairs.