Yes, you can run an air conditioner without opening any windows or doors, regardless of whether there is wind outside or not. In fact, air conditioners are designed to operate most effectively when the indoor environment is sealed off from the outdoor air.
Air conditioners work by cooling the air inside a closed space and removing heat and humidity from the indoor air. Opening windows or doors while the air conditioner is running would allow warm air from outside to enter the room, making it harder for the air conditioner to maintain the desired temperature.
To maximize the efficiency and effectiveness of your air conditioner:
Keep doors and windows closed: Seal the room as much as possible to prevent warm air from entering and to ensure that the cooled air stays inside.
Use curtains and blinds: Close curtains or blinds during the hottest parts of the day to block out direct sunlight, which can heat up the room.
Insulate the room: Ensure that the room is well-insulated to minimize heat transfer between the indoor and outdoor environments.
Consider using a fan: If you want to increase air circulation without compromising the sealed environment, you can use a ceiling fan or a standalone fan in conjunction with the air conditioner. This will help distribute the cooled air more effectively throughout the room.
Remember that keeping the room sealed while the air conditioner is running will allow the unit to work efficiently and maintain a comfortable indoor temperature. It will also help save energy by preventing the air conditioner from working harder than necessary to compensate for heat gain from the outside.