List of Johnstone Supply Stores in Trenton, NJ Outlet Note Regular Brands Johnstone Supply New Jersey Trenton Rating 5 based on 75 votes Products Tools Supplies HVAC Equipment HVACR Parts Motors Refrigerant NameAddressPhone Name/Address/Phone Johnstone Supply outlet - Trenton 2100 E State St Ext (609) 584-1200 People Also Viewed