HVAC Experts Reveal the Ideal AC Temperature During a Heatwave

When outdoor temperatures climb sharply, lowering the thermostat as far as possible can feel like the quickest route to relief. HVAC specialists warn that this approach usually increases electricity use without making the home cool any faster.

The better strategy combines a moderate setting with steady operation and simple measures that stop heat entering the property. The precise number still depends on health, humidity, insulation and personal comfort, but experts identify a practical starting range.