Will the air conditioner suck in smog when there is fog? Can I turn on the air conditioner in foggy weather?

1 You can turn on the air conditioner in foggy days.

Air-conditioning adopts self-circulation system, which integrates air-conditioning with indoor circulation system and uses Freon to realize cooling or heating. Turning on the air conditioner only circulates the indoor air and does not have the function of convection with the outside air, so the air conditioner will not pollute the indoor air in foggy days.

2 Will the air conditioner suck in smog in foggy days? Air conditioners don't breathe in smog when it is foggy. General household air conditioners are split machines. When the air conditioner works, the indoor unit processes the indoor air. In order to reduce the loss of heat (or refrigeration capacity), the doors and windows are closed, so turning on the air conditioner will not suck in smog.

Don't turn on the ventilation function of the air conditioner in foggy days. Some air conditioners have ventilation function. During ventilation, part of the indoor return air is pumped to the outside by the ventilation device in the air conditioner, which will lead to the decrease of indoor air density and negative pressure. Due to the pressure difference between indoor and outdoor, outdoor air enters the room through the door and window seam to achieve the purpose of ventilation. Turning on the ventilation function of the air conditioner in foggy days will easily lead to indoor and outdoor air convection and aggravate indoor pollution.

Can turning on the air conditioner prevent smog? number

Air conditioners still use air in the atmosphere, including smog air, and do not have the function of purification and filtration. Therefore, harmful gases cannot be filtered out. Indoor air can only be circulated, not purified. Even if some air conditioners have filtration and purification function, they can only be purified, and they can't guarantee sterility and virus-free, and they can't prevent smog.