When you turn on the hot water, are you worried about it coming out too hot and scalding you? In some homes, the hot water can come out at temperatures that are just too extreme. In fact, since water from your water heater comes out at 160 degrees, you could get scalded from just a few seconds of exposure.
This is what anti-scald valves are made to keep from happening. It protects you from quick, unexpected changes in the temperature of your water. That way, you won’t experience a quick rise in temperature when someone flushes the toilet or turns on a faucet somewhere else in the house. It works by mixing the hot and cold water to a temperature that is stable despite changes in pressure.
The installation of one of these devices is fairly easy and could be a DIY project if you have some experience, but you can also get the services of a plumber to help with the installation.