Johnstone Supply

Johnstone Supply operates as a heating equipment supplier in Oakland, California, serving licensed HVAC contractors throughout the Bay Area. With a 4.1-star rating drawn from 20 customer reviews, this supply house specializes in providing professionals with in-stock HVAC components, parts, and systems at competitive prices. The Oakland location maintains weekday hours from 7 AM to 4:30 PM, closed on weekends, serving contractors who hold proper licensing including C-20 credentials required for certain equipment purchases.

This supplier differentiates itself through consistent inventory availability and pricing advantages that contractors repeatedly mention in reviews. The Oakland team reportedly keeps products in stock, reducing wait times for professionals who need parts quickly to complete same-day installations or emergency repairs. For licensed contractors seeking a reliable supply partner, the business functions as a one-stop source for HVAC equipment without the frustration of special ordering or extended delays.

Customer feedback highlights both positive service experiences and specific limitations. Reviewers praise the Oakland staff for helpfulness and product availability, with Eric Newman noting the store consistently has needed items in stock at good prices. However, multiple reviews indicate the location strictly serves licensed contractors, with one reviewer noting they refused to provide a quote without C-20 licensing and another describing being turned away when attempting to purchase as a non-contractor.