Johnstone Supply

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About Johnstone Supply
Johnstone Supply operates as an HVAC equipment supplier in Austin, Texas, where the business has built its presence within the contractor distribution channel. The location holds a 3.6-star rating compiled from 29 customer reviews, reflecting a mix of experiences typical in the wholesale trade market. Serving primarily licensed HVAC contractors within the Austin metropolitan area and surrounding communities including Round Rock and Pflugerville, the supplier stocks an extensive catalog of heating and cooling equipment along with OEM repair components designed for professional installation.
The product catalog available through this Austin location spans both residential and commercial HVAC systems. The inventory includes mini-split heat pump solutions with variable capacity technology, traditional split systems for manufactured housing, and single packaged units. The parts selection covers the full supply chain from original equipment manufacturer components, including compressors, motors, blower assemblies, and thermostats, to refrigeration-specific items such as accumulators, expansion valves, and solenoid valves. This breadth positions the supplier as a one-stop resource for technicians handling diverse system configurations.
Customer experiences shared in reviews reveal distinct service scenarios depending on buyer credentials and intent. One homeowner who lacked a contractor license reported being turned away when seeking parts, while another described obtaining a capacitor for approximately fifteen dollars, a transaction that likely would have necessitated a four-hundred-dollar service call through a traditional HVAC company. A third reviewer noted staff reluctance to look up parts for independent technicians calling on behalf of their clients, suggesting variability in how the counter staff engages with different customer types.
What Customers Say
Twelve of twenty-nine reviewers awarded five stars, with positive feedback emphasizing parts availability and pricing transparency for licensed contractors. Eleven reviewers assigned one-star ratings, with recurring complaints centering on inconsistent counter service, pricing disputes between quoted and final amounts, and difficulty obtaining assistance with part lookups. The remaining six reviews fall between two and three stars, citing acceptable product quality but mixed customer service experiences.
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 | 8 AM–5 PM |
| Saturday | 8 AM–12 PM |
Services
Residential HVAC Equipment Sales
Split systems, packaged units, furnaces, air handlers, and evaporator coils for home heating and cooling installations.
Mini-Split Heat Pump Systems
Single-zone and multi-zone configurations with variable capacity technology and field installation accessories.
Commercial HVAC Equipment
Single packaged units and commercial split systems designed for business applications.
OEM Repair Components
Compressors, blower assemblies, motors, thermostats, ignition components, and heat exchangers for system repairs.
Refrigeration Parts & Controls
Expansion valves, accumulators, sight glasses, solenoids, filter-driers, and refrigeration valves for cooling equipment.
HVAC Controls & Electrical
Air conditioning controls, gas heat controls, heat pump controls, and electrical components for system integration.
Specialty Heating Equipment
Evaporative coolers, geothermal units, infrared heaters, portable AC units, and through-the-wall condensing units.
Manufactured Housing Systems
Evaporator coils, furnaces, installation accessories, and single packaged units designed for manufactured homes.