Johnstone Supply

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About Johnstone Supply
Johnstone Supply in Simpsonville, South Carolina, operates as a retail HVAC equipment distributor serving residential and commercial customers across the Upstate region. The business holds a 5.0-star rating from 6 customer reviews, reflecting consistent service quality that local homeowners and contractors have come to expect. Their store location provides walk-in access to an extensive inventory of heating and cooling components, with staff available to answer technical questions about equipment compatibility and installation requirements.
This distributor differentiates itself through a broad product portfolio that includes variable capacity systems, mini-split configurations, and multi-zone setups alongside traditional split systems and packaged units. The website showcases commercial HVAC solutions, manufactured housing equipment, and extended warranty options that cater to both replacement scenarios and new construction projects. A reviewer specifically praised the showroom as clean and functional, indicating attention to the customer shopping experience beyond simple product availability.
Customer reviews highlight specific experiences with team members who demonstrated product knowledge and professionalism. One reviewer described a weekday visit where staff provided detailed answers to business-related HVAC questions, noting the showroom's organized layout. Another review simply references consistent service quality over multiple interactions. These accounts suggest the business maintains trained staff capable of handling both simple equipment queries and complex system specifications.
What Customers Say
Both customer reviews award 5-star ratings, with one reviewer specifically naming a staff member (John) for knowledgeable assistance and another noting consistent quality across multiple visits. The positive sentiment centers on product expertise and showroom experience.
Working Hours
| Sunday | Closed |
| Monday | 8 AM–5 PM |
| TuesdayToday | 8 AM–5 PM |
| Wednesday | 8 AM–5 PM |
| Thursday | 8 AM–5 PM |
| Friday | 8 AM–5 PM |
| Saturday | Closed |
Services
Residential HVAC Equipment Sales
Full line of residential unitary systems including split systems, packaged units, and variable capacity options for home replacement and new construction.
Mini-Split System Distribution
Single-zone and multi-zone mini-split systems for flexible cooling and heating solutions in various room configurations.
Furnace Supply
Gas furnaces and oil furnaces available for residential heating system replacements and upgrades.
Commercial HVAC Products
Commercial-grade packaged units and split systems designed for business applications and larger spaces.
Air Handlers and Evaporator Coils
Air handling units and evaporator coils for system expansions or component-level replacements.
Extended Warranty Programs
Extended warranty options purchasable with equipment to provide additional coverage beyond standard manufacturer terms.
Manufactured Housing Equipment
HVAC systems specifically designed for manufactured home installations.
Contractor Account Services
Account request system for contractors seeking trade pricing and access to professional-grade inventory.