Johnstone Supply Store in CORONA webmaster1 May 15, 2021 Categories: HVAC WholesalersAddress 1000 EL SOBRANTE RD.CORONA, CA 92879USAContact Phone: (951) 273-9791Contact Store Review Store Your Name * Your Email * ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ Your Review *