Welcome to Johnstone Supply!Johnstone Supply is a wholesale distributor of HVAC products located in Chicago, Niles and Hillside Illinois, serving the surrounding Chicagoland area. Are you working on a heating or cooling project? Our expert staff provides you with a very diversified inventory of parts and equipment. Johnstone also provides contractors with technical advice on all air conditioning and heating parts and procedures. The friendly and expert staff at Johnstone Supply is here to help you find all the parts you need for a job well done. We offer 40,000 parts and equipment locally stocked at each of our conveniently located branches.. Only the best HVAC products so you can deliver the quality service. For all the top brands, Johnstone Supply has what you need.See us online by clicking our Web site link at the top of the page.Our HVAC product index includes:* Commercial kitchen supplies* Electrical* Heating & air conditioning controls* HVAC equipment* Installation & maintenance supplies* Motors & motor accessories* Refrigeration* Test instruments & tools* Ventilation & indoor air qualityWhether you're in the market for air conditioner units, boilers or controls, Johnstone Supply is your one-stop-shop for all your HVAC needs. Please visit our website anytime, day or night, for the convenience of ordering your parts online! We’re here when you need us.Visit Johnstone Supply at any of our locations. We look forward to your business!