Johnstone Supply

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About Johnstone Supply
Johnstone Supply operates as a heating equipment supplier in Corpus Christi, Texas, earning a 4.9-star rating across 22 customer reviews. The store maintains Monday through Thursday hours from 8 AM to 5 PM, serving contractors and homeowners seeking HVAC components and systems. Located in the Coastal Bend region, the location provides access to heating equipment for residential and commercial applications.
The supplier offers an extensive catalog spanning multiple HVAC categories visible on their website, including single packaged units, split systems, mini-split systems, and variable capacity systems. They stock residential unitary equipment, air handlers, evaporator coils, and both gas and oil furnaces. The commercial division includes single packaged units and split system options, while the manufactured housing category addresses a specific regional need in the Coastal Bend area.
Customer reviews highlight specific team members who have resolved urgent situations. One reviewer described how the staff located a replacement electric motor capacitor after a sudden failure, praising the exceptional service. Multiple reviewers specifically name Randy and Mike Carlos, with one customer noting the team went above and beyond to find proper replacement parts. Another mentioned Randy Venters provided great customer service when assistance was needed.
What Customers Say
All eight reviewers gave 5-star ratings, with five specifically mentioning Randy or Mike Carlos by name. Four reviewers explicitly praise the team's ability to locate hard-to-find parts, and three mention same-day or prompt service. No negative feedback appears in the available reviews.
Working Hours
| Sunday | Closed |
| MondayToday | 8 AM–5 PM |
| Tuesday | 8 AM–5 PM |
| Wednesday | 8 AM–5 PM |
| Thursday | 8 AM–5 PM |
| Friday | Closed |
| Saturday | Closed |
Services
HVAC Equipment Sales
Full line of heating and cooling systems for residential and commercial applications.
Split System Supply
Conventional split system air conditioners and heat pumps for standard installations.
Mini-Split Systems
Single-zone and multi-zone ductless options for flexible zone control.
Variable Capacity Systems
Advanced systems with modulating output for enhanced efficiency.
Furnace Inventory
Gas and oil furnaces available in multiple efficiency configurations.
Evaporator Coils & Air Handlers
Indoor coil units and air handling equipment for system installations.
Commercial HVAC Equipment
Commercial-grade packaged and split systems for business applications.
Parts & Component Supply
Hard-to-find HVAC components including capacitors, motors, and accessories.