Millions of us all over the UK have thermostatic mixer showers installed in our homes, but have you ever turned your shower up to its maximum temperature and discovered that it wasn’t quite warm enough? Not sure what to do about it? There’s an easy solution to this problem, all you’ll need is a Phillips screwdriver and a flat edge screwdriver.

When you observe your thermostatic mixer shower, you’ll often find that to the left hand side, there is a switch to turn on your water supply. On the right hand side, you’ll find your temperature gauge. If you turn this up, the water will go colder. If you turn it down, the water will go hotter, usually around 38 degrees maximum, which is just above body temperature.

To adjust your temperature gauge, firstly take your flat edge screwdriver and to the right-hand side, you’ll find a flat plate with a small gap in it. Take this out with your flat edge screwdriver, then using your Phillips screwdriver, unscrew the 20mm bolt. This exposes the thermostatic spindle, which allows us to adjust our temperature.

Fix the cover back onto the temperature gauge and turn it around 90 degrees clockwise. Once this is done, you can replace the sleeve and slide your cover control back onto the gauge using your Phillips screwdriver, placing the side cap back into position.

That’s how easy it is to adjust the temperature on your thermostatic mixer shower. For the full how-to video check out the link below, and don’t forget to subscribe to our YouTube channel for more ‘how-to’ videos. Furthermore, if you’re interested in the products featured in this demonstration, head over to Bathroom Mountain’s website for more information –