It is generally not recommended to run a window air conditioner during thunderstorms for safety reasons. Here's why:
Power Surges: Thunderstorms often bring lightning strikes, which can cause power surges. Power surges can damage electronic devices, including air conditioners. Even if your AC unit is plugged into a surge protector, it's still a good idea to avoid unnecessary risks.
Electrical Hazards: Thunderstorms can cause electrical disruptions and issues with power lines. If lightning strikes a power line or transformer near your home, it can result in a power surge that affects your air conditioner. In addition, strong winds and heavy rains can potentially cause damage to electrical components, increasing the risk of electrical hazards.
Water Damage: Thunderstorms are accompanied by heavy rain, and running a window air conditioner during a storm increases the risk of water entering your home through the open window. Water entering the unit can cause damage to the electrical components and potentially lead to electrical shocks.
To prioritize safety, it's generally recommended to turn off and unplug your window air conditioner during thunderstorms. If the storm is severe, it's advisable to close the windows as well to prevent water intrusion. Once the storm has passed, you can resume using your air conditioner as usual.