Welcome to Johnstone Supply: Always Open, your trusted source for comprehensive HVAC and air systems solutions.

We specialize in High Velocity Air Systems, offering a wide range of products including packaged terminal air conditioners, heat pumps, condensing units, blowers, and essential tools like cleaning kits and digital thermostats. Our commitment is to customer health and safety, backed by extensive expertise.

We offer specialized training, including GREE Factory Authorized Troubleshooting, technical webinars, and instructional guides, ensuring you have the knowledge to manage complex jobs. We are certified vendors for major contracts (e.g., MHEC, Texas State Contract) and offer tools like the FREE Wiha Tool Set. Discover our solutions today!