Johnstone Supply

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Claim This BusinessAbout Johnstone Supply
Johnstone Supply operates in Birmingham, Alabama as a heating equipment supplier serving contractors and homeowners across the greater metro area. With a rating of 4.2 stars from 33 customer reviews, the store functions as a trade-only distributor offering furnaces, split systems, mini-split units, air handlers, evaporator coils, and installation accessories. Hours run Monday through Friday from 7:30 AM to 5 PM, closed weekends. Multiple reviewers note the staff assists with locating hard-to-find parts and combining materials into cost-saving kits.
The supplier differentiates itself through contractor-focused tools unavailable at retail outlets. The website features an AHRI System Selector and Mini-Split Selector for equipment sizing, a training calendar for professional development, and free shipping on qualifying orders. Their inventory spans residential unitary systems, commercial packaged units, multi-zone configurations, and field-installed accessories, categories typically requiring specialized knowledge to specify correctly.
Customer accounts reveal mixed service quality. Jason Nelson describes staff helping him combine materials into a combination kit that saved money while adding spare parts, praising the upbeat and polite demeanor. However, James Bentley recounts frustrating trips for a replacement capacitor where staff assured inventory twice before he arrived to find nothing in stock. Damon Salter describes a home warranty situation where a system ordered in late December arrived at the warehouse only to be sold to another buyer while he waited beyond the promised date. These experiences illustrate the variability in execution that previous customers have encountered.
What Customers Say
Of 8 identifiable reviews, 5 rate the business 5 stars citing staff helpfulness and product availability. Negative reviews (3 ratings of 1 star) cite inventory management problems where promised items were unavailable upon arrival, including one instance of a sold-out warehouse allocation. No reviewer mentions emergency same-day service.
Working Hours
| Sunday | 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 |
| FridayToday | 7:30 AM–5 PM |
| Saturday | Closed |
Services
HVAC Equipment Sales
Distributes furnaces, split systems, mini-splits, air handlers, and evaporator coils for residential and commercial applications.
Parts and Accessories
Carries installation accessories and field-installed components for contractor projects.
System Selection Tools
Provides AHRI System Selector and Mini-Split Selector for proper equipment sizing.
Training Programs
Offers training calendar with educational sessions for contractor professional development.
Commercial HVAC Units
Supplies single-packaged units and commercial split systems for business installations.
Manufactured Housing Systems
Stocks equipment designed for manufactured homes and modular units.
Free Shipping
Qualifying orders ship free per website account request terms.