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Why is my thermostat screen blank or unresponsive?

What’s likely going on

Dead batteries are the most common cause for a battery-powered thermostat. For a hardwired or smart thermostat, a tripped breaker or a wiring issue at the unit itself is more likely if batteries aren't the issue.

Is this a DIY job or worth calling someone?

Replacing batteries is simple and safe to do yourself. If that doesn't bring it back, especially on a smart or hardwired thermostat, it's worth having someone check the wiring rather than repeatedly resetting it.

Not sure, or ready to have someone take care of it?