This water cooler has a 3 stage reverse osmosis purification system. The replacement costs and part numbers are as follows:
| Reverse Osmosis Replacement Filters | Part Number | Cost |
| Carbon pre-filter | 4603 K | $20.87 |
| Carbon Post Filter | 4603-j | $12.87 |
| RO Membrane (TFC 18 GPD) | 4817-6 | $35.87 |
Replace post and pre filters every six months or as needed. Replace membrane every 3 years for non softened water and 5 years for softened water or as needed. Reverse Osmosis System will provide up to 18 gallons of purified water per day.
