Should the car AC be turned on in winter?

[Ulysses]

In winter, there is no need to turn on the AC in the car. Simply activate the heating system by turning on the blower and adjusting the temperature control knob to the red zone on the right to obtain warm air. AC stands for 'air conditioning,' and the AC button serves as the switch for the car's air conditioning system. The air conditioning compressor is a driven fluid machine that converts low-pressure gas into high-pressure gas, acting as the heart of the refrigeration system. During winter, the heat from the engine can be utilized as warm air without engaging the AC button. Just turn on the blower and select the heating temperature control zone to achieve the desired warmth.

[OTanner]

As an experienced driver, I've found that pressing the AC button in winter is for dehumidification and preventing window fogging rather than cooling. In cold weather, when the heater is on, warm air inside the car hits the cold glass, causing fog that severely impairs visibility and creates hazards. Activating the AC removes moisture, keeping windows clear for safer driving. I also recommend using it with the heater and setting it to auto mode for more efficient defogging. Fogging commonly occurs in the early morning or after rain/snow, so making it a habit to turn on the AC can prevent emergency situations. Remember to regularly check the cabin air filter to avoid clogging, which reduces dehumidification effectiveness. Safety always comes first—don't cut corners and risk driving hazards.

[AylaLee]

I think it's very important to turn on the AC in the car during winter to keep the air dry and comfortable, especially in the cold climate of the north. When the heater is on, the humidity rises, which can easily make people feel drowsy and fatigued. The AC can dehumidify the air, making breathing smoother and avoiding discomfort. My friends and I often use the heater in combination with the AC during commutes, keeping the car fresh and not stuffy. In the south, it might not be necessary to use it frequently, but it's very practical in places with heavy humidity. Long-term use may increase fuel consumption, but it saves the trouble of wiping the windows, which can affect driving mood. Setting the temperature a bit higher with the warm air and using the AC together is better than just using the heater and ignoring the humidity issue, ensuring a pleasant journey.

[LeElliott]

After years of driving, I've developed the habit of using AC for defogging in winter - a lifesaver in critical moments. Fogged-up windows are common, and driving on cold nights with poor visibility can be panic-inducing. Turning on the AC quickly removes moisture - within minutes the fog clears, restoring visibility and preventing rear-end collisions. There's no need to keep it running continuously; adjust usage based on conditions to save fuel while never compromising safety. For vehicles with automatic climate control, simply press the AC button and set the temperature. Manual systems require slightly more attention, but the operation remains straightforward enough for drivers of any age to master. Regular AC maintenance, including periodic filter replacements, ensures optimal performance for worry-free winter use without extra burden.