Which is hot air and which is cold air between HI and LO in a car?

[MalachiMarie]

LO stands for cooling, LO is the abbreviation of the English word LOW, meaning 'low', while HI stands for heating. The functions of the cabin air filter include the following 3 points: 1. Provide fresh air: It prevents the car windows from fogging up, ensuring clear visibility for the driver and safe driving; it supplies fresh air to the cabin, preventing occupants from inhaling harmful gases and ensuring driving safety; it effectively sterilizes and deodorizes. 2. Ensure safety and hygiene: It keeps the cabin air clean and prevents bacterial growth; it effectively separates solid impurities such as dust, core powder, and grinding particles from the air; it effectively blocks pollen, ensuring that passengers do not have allergic reactions that could affect driving safety. 3. Adsorb harmful substances: It adsorbs moisture, soot, ozone, and odors from the air, with strong and long-lasting moisture adsorption capabilities.