Supply, Installation, Testing, Commissioning of fully inverter centralized HVAC Air conditioning system 11 tr-12HP new technology of energy efficiency to control room along with removal and refixing of Split A.C. to 22KV GIS room at 220 kV Kamba Substation & ii) Providing and Fixing of 1.5 Tone Split AC for Control room, GIS room , PLCC room, charger room and In-Charge cabin at various Sub Station (i.e. 220kV Bapgaon & 100 kV Bhiwandi & Mumbra Substation ) under EHV (O&M) Division Kalwa.