Water temp varies throughout house

Brand new house, so lots of new tech I'm unfamiliar with.
Water temp is fine on all sinks. On both showers, though, the hot is not really hot and it gets cold quickly. Water heater is set at a normal temperature. I've heard of anti-scald shower valves but don't know much about them. I believe I have single-handle Moen on both (I will have to check) Any suggestions??

Most of them have an adjustment to limit the maximum temp...yours probably are set to a low temperature. Normally, you'll need to remove the trim plate and then adjust the screw to change the limit to where you want.

Thanks. That did the trick very well.