Johnstone Supply

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About Johnstone Supply
Johnstone Supply operates in Modesto, California as a heating equipment and parts supplier with a 4.4-star average rating drawn from 16 customer reviews. The branch serves contractors and do-it-yourself homeowners across Modesto and surrounding Stanislaus County communities. Staffed on weekdays from 7 AM to 5 PM, the location provides access to heating components and equipment without the long hold times common at larger regional distributors.
The Modesto team stands out for its inventory depth and logistics flexibility. Reviewers consistently note a large selection of universal parts alongside standard catalog offerings, plus the ability to pull items from the Johnstone distribution hub in Las Vegas without added freight charges. Free delivery further differentiates the operation from competitors who charge per-trip fees. While one reviewer observed that OEM parts selection for specific brands has limits, the hub network helps bridge inventory gaps when special orders are needed.
Customer stories in the reviews zero in on three employees by name. Alfonso, described as the branch manager, earns praise for taking time to educate customers on their purchases. Counter staff Chubbs and Randy receive repeated commendation for knowledgeable, friendly assistance. One reviewer credits the team with consistently making every visit a positive experience, while another highlights their willingness to go out of their way to help. These mentions suggest a team that prioritizes personal service over impersonal transactions.
What Customers Say
15 of 16 reviews award 5 stars, with Alfonso, Chubbs, and Randy named by multiple customers. The lone 4-star review cites strong counter service and inventory selection while flagging gaps in OEM part availability and warranty freight policy.
Working Hours
| Sunday | Closed |
| Monday | 7 AM–5 PM |
| Tuesday | 7 AM–5 PM |
| Wednesday | 7 AM–5 PM |
| Thursday | 7 AM–5 PM |
| Friday | 7 AM–5 PM |
| SaturdayToday | Closed |
Services
Heating Equipment Sales
Catalog and specialty heating equipment for residential and light commercial applications.
Universal and OEM Replacement Parts
Broad parts selection including universal fits alongside standard OEM inventory.
Counter and Will-Call Service
Walk-in counter service with knowledgeable staff able to look up part numbers and cross-reference compatibility.
Free Delivery
No-charge delivery on parts and equipment within the local service area.
Regional Hub Ordering
Access to the Johnstone Las Vegas distribution hub for items not stocked locally, shipped without freight charges.
Technical Assistance
Staff guidance on part selection, troubleshooting, and product education during counter visits.