Johnstone Supply

Johnstone Supply operates as Branch 21 in Irwindale, California, functioning as an HVAC equipment distributor serving contractors and trades professionals in the greater San Gabriel Valley region. The Irwindale location holds a 4.5-star average rating drawn from 30 customer reviews, with operating hours extending from 7 AM to 5 PM on weekdays and Saturday morning availability. This location specializes in wholesale distribution of heating and cooling equipment including furnaces, split systems, mini-split configurations, air handlers, and evaporator coils.

The Irwindale branch distinguishes itself through extensive inventory depth and knowledgeable counter staff who assist contractors with cross-referencing parts and tracking down specialized components. Website listings indicate product categories spanning residential unitary systems, commercial packaged units, variable capacity systems, and multi-zone configurations. The distributor maintains partnerships with major manufacturers in the HVAC sector, offering both field-installed accessories and extended warranty programs for equipment purchases.

Customer reviews highlight specific team members including Fernando, Gino, and Jorge who have assisted contractors with same-day part procurement and problem-solving for unusual repair scenarios. One reviewer described the team tracking down a specific relay needed to repair an AC condenser unit, while another noted the staff's willingness to have orders ready for pickup when contractors need immediate access to parts. The Irwindale location serves as a resource for professionals handling installation, maintenance, and emergency repair work.