Is it unhealthy to sleep with the AC on?

Is Sleeping With the AC On Actually Bad for You?

When summer heatwaves hit, leaving the air conditioning running all night can feel like the only way to get a decent night's rest. For the most part, sleeping in a cool environment actually promotes deeper, more restful sleep by helping your body naturally lower its core temperature.

However, running the AC continuously isn't entirely without drawbacks. Direct cold airflow can lead to dry nasal passages, a scratchy sore throat, and morning muscle stiffness. Cold, dry air robs the room of humidity, which irritates your respiratory tract and leaves your skin feeling dehydrated by sunrise.

To enjoy a comfortable night without waking up feeling unwell, adjust the vents so the air doesn't blow directly onto your bed. Setting a timer or keeping the thermostat at a moderate temperature ensures you stay comfortably cool without over-chilling your bedroom.