Johnstone Supply

Johnstone Supply operates as a heating equipment supplier in New Castle, Delaware, holding a 4.0-star rating from 23 verified customer reviews. This contractor-focused HVAC distributor serves the greater New Castle County region, providing professional-grade heating and cooling equipment to both licensed contractors and serious DIY homeowners. The retail location maintains standard business hours Monday through Friday from 7 AM to 4:30 PM, with Saturday availability from 8 AM to noon for part pickups and urgent job needs.

The New Castle Johnstone Supply location distinguishes itself through hands-on product access and contractor-focused amenities. The showroom displays actual HVAC equipment including furnaces, split systems, mini-splits, and evaporator coils, allowing customers to examine products physically rather than describing needs to a counter person. The store offers a convenient texting communication option for order updates and inquiries. After-hours part pickups are facilitated through exterior lockers, a practical feature for contractors working early morning jobs or completing same-day repairs.

Reviewers highlight specific staff members who deliver memorable service experiences. Guy Clemency praised the showroom experience, noting he could physically examine products before purchasing rather than relying on verbal descriptions. Robert Johnson referenced the manager's proactive approach to meeting customer needs. The negative reviews cite inventory gaps, with D Pernello noting the absence of common 1-inch PVC Schedule 40 fittings and slow counter service, while skyward speed mentioned losing a knowledgeable salesman named Dan C who previously provided exceptional customer support.