Water Cooler Troubleshooting

Having trouble with
your water cooler?

If you are looking for a new water cooler,
we offer water cooler rental and purchases
to customers in London.

We have written and included the blogs below in order to help the world with common problems that can affect water coolers. Please use the links included to access our vast range of water cooler troubleshooting advice. Should any of the queries or solutions not address your issue, feel free to contact us and we will be happy to help you.

Here at The Water Delivery Company headquarters, we can get a lot of calls from customers worried that there is a problem with their water cooler. 99% of these calls can be easily cleared up by following one of the simple steps below, so we thought it was time we published a water cooler troubleshooting guide to save you, our valued customers, time.

Water is Not Getting Cold

Problem Cause Solution
The water from the water cooler is not chilled / getting cold.


A surprisingly common cause for water cooler water not getting cold is that it’s not plugged into the wall socket or that the mains power switch isn’t turned on. We encourage our customers to check that the water cooler is plugged in and turned on and to also check that the power cable at the back of the cooler is firmly pushed into its socket. It may help to also check that the switch (or both switches) at the back of the cooler is turned to the “On” position and illuminated.

Water Cooler not Dispensing

There is no water coming from your water cooler.


Usually, the reason behind a water cooler not dispensing water is an airlock that is a result of the air pressure that is forced into the water cooler as the bottle is placed on it. We recommend that you remove the water bottle from the water cooler, and then place it back on the water cooler. While you do this, ask a colleague to hold both taps open until water comes through them. If doing this doesn’t fix the problem, then we ask you to give us a call on 0845 006 3309 so that one of our staff members can happily assist you.

Water Cooler Leaks

There appears to be water leaking from the water cooler, possibly forming a puddle on the floor beneath the cooler.


99% of the time, water cooler leaks are the result of a leaking water bottle and not from the cooler itself. This may be the result of a hairline crack in the bottle which alters the pressure within the cooler from the normal “vacuum”. The pressure change draws water into the tank and causes it to overflow. We encourage our customers to remove the bottle from the cooler and test it with a different bottle. If the issue does lie with the water bottle, the changing of bottles will put a stop to the leak. Read more about water cooler leaks here.
The leak appears to be coming from the drip tray.


As the name suggests, a drip tray is intended to catch any water that escapes from the faucets and does not end up in a glass, bottle or cup. The drip tray slides easily out from the water cooler. It regularly needs to be emptied into the sink to prevent overflowing. Not doing so will result in the drip tray leaking.
The leak appears to be coming from the tap.


Sometimes you can see that the leak is coming directly from the water cooler taps. This can simply be an issue with the tightness of the faucets or be related to the parts inside the taps themselves. If this is the case, it the taps may need to be tightened. You can do this by twisting them slightly. If this doesn’t stop the taps from leaking, then the spring or the washer may need replacing. Take the water bottle off, drain the cooler tank into a bucket, and call out an engineer to do so.

How to Sanitise Water Coolers

Health and safety regulations recommend the regular sanitisation of your water cooler to ensure its sterility and usability.

Regular sanitisation can be handled by one of our experienced professionals or done on your own. If you choose to handle the sanitisation of your water cooler yourself, then we recommend you follow our step-by-step guide to cleaning your water cooler. We recommend that this process is done at least once every three months.

How to Change the Bottle on your Water Cooler

Should a new bottle be required on your water cooler, you will have to know how to change it for one that’s full. It may seem a little daunting at first to try to understand how you can go about changing an empty or cracked water bottle for one that’s full of water. In an effort to better help you understand how to change the bottle on your water cooler, we’ve compiled a short film that will provide you with simple instructions as a guide in this task. These films will demonstrate the best and safest way to change the bottle on your water cooler.

Correct Water Bottle Storage

Water bottle has gone green.


The slight green of your water bottle is caused by sunlight continually penetrating the bottle, which is bad for the water. We recommend that you do not use any water bottle that has gone green, and to keep bottles in a shaded area. Learn more about correct bottle storage below.
What is the correct way to store water cooler bottles?


Often because we deliver 12-litre and 19-litre reusable bottles to our customers, there is a need for the bottles not being used to be stored for up to three months after we deliver. We recommend that our customers do not store their water cooler or the unused water cooler bottles in direct sunlight. We also provide a number of water cooler accessories that make the storage of water cooler bottles easy, without the loss of too much free space.