Johnstone Supply

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About Johnstone Supply
Johnstone Supply operates as a heating equipment supplier in Gilroy, California, serving contractors and homeowners across the southern Santa Clara Valley. The location holds a 4.9-star rating derived from nine customer reviews, reflecting consistently positive experiences reported by those who have visited the store. This Gilroy branch functions primarily as a supply destination for HVAC professionals seeking parts, equipment, and related components rather than a residential service provider performing on-site installations or repairs.
What distinguishes this supplier from general hardware stores is the specialized knowledge the staff brings to each interaction. Multiple reviewers note the team maintains comprehensive inventory coverage, with one customer specifically acknowledging the team will order hard-to-find items and have them ready for pickup the following day. The combination of in-stock availability and efficient special-order processing creates a resource that contractors serving Morgan Hill, San Martin, and the surrounding unincorporated areas can rely on for project continuity.
Customer experiences highlight two team members by name: Grant, described as a manager who assists customers with product selection, and Steve, noted for his consistently positive attitude and willingness to help with whatever is needed. Reviewers describe scenarios where the team went beyond standard service, including finding ways to source uncommon parts and going out of their way to ensure customers left satisfied. The willingness to correct any mistakes immediately, as noted in one review, reinforces a service-oriented approach that differentiates this supply house from transactional alternatives.
What Customers Say
Eight of nine reviewers award five stars, with particular praise for staff willingness to order specialty items and have them ready within 24 hours. The single four-star review still acknowledges good customer service and assistance with finding needed products.
Working Hours
| Sunday | Closed |
| Monday | 7 AM–4 PM |
| TuesdayToday | 7 AM–4 PM |
| Wednesday | 7 AM–4 PM |
| Thursday | 7 AM–4 PM |
| Friday | 7 AM–4 PM |
| Saturday | Closed |
Services
HVAC Equipment Supply
Distributes heating, cooling, and ventilation equipment for contractors and homeowners.
Specialty Parts Ordering
Sources uncommon or hard-to-find HVAC components, typically ready for next-day pickup.
In-Stock Inventory
Maintains comprehensive stock of common HVAC parts, filters, and supplies.
Contractor Account Services
Serves professional contractors with project-specific parts and bulk ordering capabilities.
Technical Product Assistance
Staff helps identify correct parts using model numbers, system information, or physical samples.