Annual Maintenance service- AIR CONDITIONER, ANNUAL, MAINTENANCE SERVICES FOR WATER PURIFICATION AND, CONDITIONING SYSTEM, Version 2- Potable Water, Purification System Reverse Osmosis Or UV Based; upto 3;, PACKAGE- 5: Water purifier and conditioning system, maintenance involving basic servicing,.., Version 2- Drinking Water Cooler;, upto 3; PACKAGE- 5: Water purifier and conditioning system, filters, membranes, All electrical parts..