bids are invited for service charges for 1.5tr window air conditioner for one year , service charges for 1 tr wall-mounted split air conditioner for one year , service charges for 1.5tr wall-mounted split air conditioner for one year , service charges for 2tr wall-mounted split air conditioner for one year , service charges for 1.5tr cassette type inverter air conditioner for one year , service charges for water cooler (80/120 ltrs capacity) for one year , supply and re-filling/top-up of r32 refrigerant gas for ac units , supply and re-filling/top-up of r22 refrigerant gas for ac units , dismanltling of indoor/ outdoor split ac unit , installation of indoor/ outdoor split ac unit , charges for pcb repairing of inverter split ac , charges for pcb repairing of non-inverter split ac