Yes! Consider the fact that the full current to the heater passes through your thermostat and the thermostat itself runs on the supply voltage (either 120V or 240V). It's not unusual for Mysa to feel warm to the touch. The regular temperature of a thermostat housing normally varies between 35 °C and 50 °C (95 °F and 122 °F).
If you're still having trouble with your thermostat. Please reach out to our team if you have any further questions!