Johnstone Supply

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About Johnstone Supply
Johnstone Supply operates as a wholesale HVAC equipment distributor at 3901 Two Notch Road in Columbia, South Carolina. The location has earned a 4.6-star rating across 36 verified customer reviews, reflecting consistent satisfaction among contractors and trades professionals who rely on this location for parts and equipment. As a wholesale distributor, Johnstone Supply primarily serves licensed HVAC contractors rather than residential homeowners, though some locations permit will-call purchases for qualified buyers. The Columbia store maintains standard business hours from 7:30 AM to 5 PM Monday through Friday, closed on weekends.
What distinguishes this Johnstone Supply location is its robust contractor support infrastructure. The distributor offers an eCommerce platform where registered contractors can access real-time pricing and inventory, eliminating guesswork before arriving at the counter. Their Parts Program provides dedicated sourcing for hard-to-find components, while the Johnstone University training initiative offers continuing education for technicians seeking manufacturer certifications. The website references sheet metal capabilities and maintains a comprehensive manufacturer listing, suggesting specialty ordering for commercial projects that require custom ductwork or specialized equipment configurations.
Customer reviews consistently highlight counter staff who go beyond standard transactions. Reviewer Kyle Andrew notes that counter personnel "go above and beyond to help me find what I need," while Chad Shealy specifically credits "Greg G. and his crew" for exceeding expectations with selection and stock availability. Jim B. describes the location as a "wonderful HVAC supply house" that works with customers on obtaining difficult-to-source components. These accounts suggest a team that prioritizes problem-solving over simple retail transactions, particularly for contractors facing time-sensitive service calls.
What Customers Say
7 of 8 reviewers award 5 stars, with particular praise for counter staff who help locate difficult parts and maintain strong inventory. Negative reviews cite licensing requirements and isolated customer service interactions, while positive reviews emphasize diagnostic knowledge and product availability.
Working Hours
| SundayToday | Closed |
| Monday | 7:30 AM–5 PM |
| Tuesday | 7:30 AM–5 PM |
| Wednesday | 7:30 AM–5 PM |
| Thursday | 7:30 AM–5 PM |
| Friday | 7:30 AM–5 PM |
| Saturday | Closed |
Services
Wholesale HVAC Equipment Distribution
Distributes heating and cooling equipment exclusively to licensed contractors for installation and service.
Parts Sourcing Program
Dedicated program for locating difficult-to-find HVAC components through their supplier network.
Counter Will-Call Service
In-store pickup for ordered parts with potential availability of select items without prior ordering.
Online Contractor Ordering
ECommerce platform allowing registered contractors to check pricing, availability, and place orders.
Sheet Metal Products
Custom and standard sheet metal for ductwork fabrication and commercial installations.
Technical Training Resources
Johnstone University training programs for technician certification and manufacturer education.
Manufacturer SDS Lookup
Safety Data Sheet database for contractor reference when handling refrigerants and chemicals.