Essential Concepts
Best starting point: 65°F
Usual range: 60 to 67°F
Cooler rooms support sleep and can lower energy use
Adjust for bedding, humidity, airflow, and health
Test changes in small steps over several nights
For most adults, a nighttime thermostat setting of about 65°F, within a 60 to 67°F range, best supports sleep and may reduce energy use. The right number still depends on the bedroom itself, since bedding, humidity, airflow, and personal comfort can shift what feels restful.
