Is it okay to set the car's heating to H1?

2 Answers
McElijah
09/01/25 6:42am
It is acceptable to set the car's heating to H1. In fact, the "H1" on the air conditioning panel is actually "HI," which is an abbreviation for the English word "HIGH." Definition of heating: Heating is also part of the air conditioning system, specifically the warm air function. So-called automatic air conditioning includes control over both cooling and heating. The term "automatic" means that once the temperature is set, if the interior temperature is lower than the set value, the automatic air conditioning system will control the vents to blow warm air to heat the interior to the desired temperature. Conversely, if the interior temperature is higher than the set value, the system will automatically activate the cooling function to blow cold air through the vents, lowering the interior temperature to the set value. Heating system precautions: However, it is important to ensure that your heating system is functioning properly.
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DelRuth
09/14/25 2:33am
I often use the H1 setting when turning on the heater, which is perfectly fine. H1 usually indicates the starting point for heating or a low-heat setting on the temperature knob. In my daily driving, once the engine is warmed up, turning the knob to H1 with the fan blowing provides enough warmth. I recommend setting the fan speed to a moderate level—not too high or too low—to avoid uncomfortable temperature differences inside the car. Sometimes, H1 corresponds to around 32-35°C, which is below the body's comfort level in winter, so I prefer H2 or higher when it's really cold. Remember, the heating system relies on engine waste heat, so using H1 doesn’t consume extra fuel, but make sure the AC switch is on—don’t just adjust the temperature and forget to activate it. Every time I get in the car, I make it a habit to let the engine warm up for a few minutes before trying the H1 heating setting.
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