Johnstone Supply

Johnstone Supply has served the Los Angeles HVAC industry for decades as a wholesale heating equipment supplier, maintaining a 3.5-star average across 52 customer reviews. The store stocks residential and commercial heating and cooling equipment, including gas furnaces, oil furnaces, split systems, packaged units, and mini-split systems. With operating hours running Monday through Friday from 7 AM to 5 PM, plus Saturday 8 AM to 5 PM, the location serves licensed contractors across Los Angeles and surrounding Southern California communities.

The Los Angeles branch carries single-packaged units, split systems, and mini-split systems including multi-zone and variable-capacity configurations. Their catalog extends to evaporator coils, field-installed accessories, and commercial HVAC equipment for manufactured housing. As a contractor-only supply house, Johnstone Supply provides extended warranties alongside equipment purchases and supports professional accounts with dedicated ordering tools and cross-reference searches for hard-to-identify components.

Review experiences at this location present a split portrait. Jose Kin awarded five stars, praising the operation in response to negative feedback, though the full account is not visible. By contrast, Christopher L, who works in the HVAC field, called seeking outdoor condenser specifications and was met with what he describes as hostile service from an employee named Sean, who ultimately terminated the call without assisting. Another reviewer, owner host, documented purchasing a part through communications with Mark only to discover upon pickup that it lacked packaging and failed within 90 minutes. The return process required bringing the handyman's license to the counter, a condition the reviewer found unreasonable given the circumstances.