Our water cooler rental plan includes: Commercial grade water cooler 1x 15L bottle (BPA Free) Premium filter – the filter fits onto your kitchen tap, so you can fill the bottle with purified water. Scheduled servicing every 6 months & filter replacements every 12 months

Depending on usage, the filter has a lifespan of 12 - 18 months, however one of our trained technicians will visit your home to change the filter every 12 months.

One of our trained technicians will visit your home to service & sanitise your water cooler every 6 months.

We use market leading 1 micron Omnipure KDF GAC filters. The water filter has a “two-media” cartridge consisting of KDF (high-purity copper-zinc alloy) and GAC (granular activated carbon), providing superior filtration qualities. The KDF media also provides a bacteriostatic effect which is hostile to algae, fungi and bacteria. Our water filters have been tested in New Zealand at the University of Otago, and have shown removal or reduction of the following contaminants (% reduction minimums): Aluminium (97%) Arsenic (96%) Barium (90%) Cadmium (80%) Chlorine (99%) Chromium III (98%) Chromium VI (75%) Copper (90%) Endrin (86%) Dieldrin (96%) Iron (50 - 95%) Lead (85%) Lindane (99%) Mercury (99%) Methoxychlor (96%) Nitrate (75%) Selenium (98%) Silvex (88%) Sulphur (99%) 2,4-D (a Herbicide) Toxiphene (85%) TTHM ( as CHC13, 98%) Please note, our water filters are not intended for use on microbiologically unsafe water.

99.9% of the time the leak is caused by a tiny hole the size of a pin prick in the bottle. Take the bottle off the water cooler, switch off & disconnect the power plug from the wall socket and contact us at hello@optimumh2o.co.nz.

Check your water cooler is connected to the mains electricity supply and the red power switch is turned on. Check the power cord is securely fitted to the socket at the back of your cooler. Ensure your mains power outlet is working.

This could be happening for a few different reasons: Make sure your cooler is plugged in and switched on (you’d be amazed at how often this is the cause) – see question "No power?". Are lots of people using the cooler? If the tank has been drained, wait 15 minutes for the water to chill. Check that your cooler’s thermostat is set to an optimum temperature for cooling the water (found at the back of the cooler). To make the water colder, rotate the screw in the clockwise direction approximately 1 hour position. Allow the cooler to stabilize for 2-3 hours to ensure proper temperature of the cold water. (Note: do not change the setting by more than 1 hour setting at a time to prevent freezing).