Why is there no heating in the car?

[SanMaci]

There is no heating in the car because there is a problem with the car's cooling system or exhaust fan. The following is how the heating and cooling system works: 1. Cold air: Cold air is formed by compressing the refrigerant to liquefy it and then vaporize it, absorbing a large amount of heat from the air; when the cold air is turned on, the compressor pulley drives the compressor to work, increasing the engine load and consuming a certain amount of fuel. 2. Warm air: Warm air comes from the heat generated by the engine during operation: when the engine's cooling system dissipates heat from the engine, the fan sends the dissipated heat into the car to form warm air; when the warm air is not in use, the fan stops, the warm air outlet closes, and the dissipated heat is completely released into the atmosphere.

[MacAbigail]

The issue of no heating in the car, I reckon the main problem might lie in the cooling system. The engine coolant circulates to the heater core, the heat is transferred in, and the fan blows it out as warm air. If the coolant is insufficient or there are air bubbles trapped, the heat can't be transferred; a clogged heater core is quite common in older cars, especially if maintenance hasn't been done on time; another possibility is a stuck thermostat, preventing the engine from reaching the right temperature; if the fan motor is broken, there's simply no air blowing out. It's best to conduct a thorough check before winter arrives—top up the coolant, clean the system—to avoid discomfort while driving. Don't forget to check if the temperature setting was accidentally adjusted to cold air, as small details can greatly affect the experience.

[DelLiam]

My personal experience tells me that a car without heating is mostly due to insufficient coolant or a fan issue. Start the car in the morning, wait a few minutes, and feel the air vents—if they're still cold, something's wrong. First, check the coolant reservoir; if the level is low, add some. Alternatively, there might be air in the system, requiring bleeding. If the heater core is clogged, water won't circulate. If pressing the fan button doesn't produce any response, it could be a faulty motor or a blown fuse. It's best to start with the simplest checks, like inspecting the coolant or testing if the fan works properly. On long drives in freezing weather, low cabin temperature can affect concentration, so keeping a blanket handy for emergencies is practical—ensuring a safe trip home is the top priority.

[PaisleyRose]

I reckon the car heater failure is mostly related to the coolant. The coolant transfers heat to the heater core, and if there's an issue, the heat can't get in; if the fan isn't spinning, the air can't get out either; sometimes it's a thermostat malfunction, and the temperature won't rise. A simple check you can do: see if the coolant level is normal, try adding some new coolant; turn the fan to the highest setting and listen for sound, no noise might mean the motor is broken; if it's clogged, the system needs flushing. When it's cold, the car interior gets too chilly, windows fog up easily and visibility becomes blurry, don't freeze yourself while driving, dressing warmly is more reliable for protection.