Why does my shower keep going hot and cold?

If your shower keeps changing between hot and cold, it's often a sign that the hot and cold water supplies aren't flowing consistently. This may be caused by fluctuating water pressure, a faulty thermostatic shower valve, or an issue with your boiler or hot water system. In some cases, running other appliances or taps at the same time can also affect the temperature. If the problem happens regularly, it's worth having your plumbing system checked to identify the underlying cause before it leads to further issues. A WaterSafe-registered plumber can diagnose the fault and recommend the most appropriate solution.