In summer and winter, an air conditioner has become our lifesaver. But many people think that after running the air conditioner for a period, a musty, sour, or unpleasant smell spreads in the room. It not only influences comfort but also indicates a low air quality. So why is there a strange smell i...
To those living in extremely cold regions, a common question comes when it is needed to heat by an air conditioner in winter: can the air conditioner outdoor unit operate freely in an extremely cold environment or not? Particularly under the ultra-low temperatures of -30℃ and -40℃, is the air condit...