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Claim This BusinessJohnson Supply has been serving Corpus Christi and the Texas Gulf Coast since 1982, operating as a heating equipment supplier for both professional contractors and homeowners undertaking DIY HVAC projects. With a 4.3-star rating across 30 verified customer reviews, the shop maintains a strong reputation for knowledgeable counter staff who can guide purchases ranging from replacement capacitors to complete system components. The retail location operates Monday through Friday from 7:30 AM to 5 PM, with Saturday hours from 8 AM to noon, making it accessible for weekend project shoppers.
What distinguishes Johnson Supply from typical big-box retailers is its contractor-focused inventory model. The warehouse stocks specialty tools and diagnostic equipment that amateur technicians often cannot find elsewhere, including manometers, refrigerant gauges, and combustion analyzers. Managerial staff rotate across the counter, ensuring continuity of service whether a customer visits one day or six months later. The shop also carries hard-to-find replacement parts for aging residential systems, a critical feature for homeowners preserving equipment beyond typical manufacturer warranty periods.
Customer reviews repeatedly commend specific team members, including one technician noted for explaining diagnostic procedures in plain language during a system failure. Another reviewer described receiving same-day assistance during a weekend emergency repair, highlighting the shop's willingness to accommodate urgent situations. Among eight client testimonials, five reviewers awarded four or five stars, with particular praise for product selection breadth and counterstaff patience with less experienced customers. The single two-star review cited interpersonal concerns rather than product quality.
Five of eight reviewers gave four or five stars, praising product variety and staff expertise. One reviewer specifically mentioned same-day assistance during an urgent situation. Negative feedback focused on employee attitude rather than merchandise quality.
| Sunday | Closed |
| Monday | 7:30 AM–5 PM |
| Tuesday | 7:30 AM–5 PM |
| Wednesday | 7:30 AM–5 PM |
| ThursdayToday | 7:30 AM–5 PM |
| Friday | 7:30 AM–5 PM |
| Saturday | 8 AM–12 PM |
Residential replacement parts including capacitors, contactors, fan motors, and circuit boards for major brand systems.
Manometers, refrigerant gauges, combustion analyzers, and multimeters for accurate system diagnostics.
Standard and specialty air filters, belts, and routine maintenance supplies for seasonal upkeep.
Common refrigerants and purging compounds for HVAC service technicians.
Professional-grade equipment including flaring tools, tube benders, and recovery machines.
Sheet metal fittings, ductwork components, and insulation materials for system modifications.
Counter staff provide system troubleshooting guidance and part identification assistance.