Reasons for cold air coming out of the heating system instead of hot

 Our driving habits will start to change as soon as we enter the lovely winter season because your car needs to be prepared for the cold weather in addition to taking the necessary safety precautions to avoid accidents in the rain and snow and other situations that are now common knowledge for all drivers.

The heating system, which provides the car cabin with warm air and is the primary means of keeping the driver and passengers warm during winter driving, is one of the car accessories that is used the most. When this system malfunctions, the air cannot escape from the vehicle. Instead of hot air entering the automobile, the cold air does, and if the temperature is low, driving in the cold may become nearly impossible.

In this post, we'll explain why your heating system is blowing cold air and how to quickly remedy these issues so you don't have to call a mechanic for the trickiest situations.

Causes of cold air leaving the heating system

The blower fan is malfunctioning.

One of the causes of chilly air inside the heating system is a malfunction or defect in the blower fan's operation, and the fix for this issue is to replace the fan or the wires linked to it, which may be defective and cause the fan to malfunction.

decrease in coolant production

All automobiles rely on coolant, also known as antifreeze, to keep their engines cool and remove heat from them. If the amount of coolant in the system drops for any reason, it will affect engine cooling and the temperature of the liquid itself, which will result in the release of chilly air into the vehicle.

The heater is having an issue.

Any issue with the heater, which is in charge of regulating the temperature of the air and water inside the system, is one of the major issues that causes cold water to leak out. The heater is typically clogged with dirt and mud because of this, which prevents hot water from entering and turning into hot air. This issue inside the cabin can be resolved by either opening the heater and pumping water into it, or by replacing it entirely.

Thermostat malfunction or damage

A broken or malfunctioning thermostat may be to blame if, after starting your car engine when it is cold, you notice that it stays cold longer than usual or that it gets hotter more frequently. The thermostat also keeps the coolant cool, which affects the temperature of the intake air to the cabin and helps to keep it cool.

the heating valve has been harmed

When the cabin temperature performance is set to cold, the heater valve stays closed and prevents hot coolant from reaching the cab. If this valve malfunctions, the entry and exit of water into the system will be damaged, and cold air will come out instead of hot. The heater valve's function is to open and close to allow coolant to flow into the heater core.

Heating system controls malfunction

You may sometimes have a malfunction in the control buttons of the heating system, especially in old used cars, and the failure of these buttons will affect the work of the system, air flow, and the entry of cold air into the car instead of warm, and fixing this defect is simple and does not require much time or much expenditure out of money.

There is a cooling system leak.

A malfunction in one of the components or a liquid leak will result in cold air entering the cabin, so the mechanic must check the entire system to identify the issue. The cooling system is a very important system that contains many parts, including hoses, a water pump, a radiator, and many others. This system is subjected to constant pressure to cool the liquid in order to absorb and cool the engine heat.

the cooling system's presence of air bubbles

One of the possible system malfunctions is the development of air bubbles. These bubbles result from coolant leaks caused by hose or line cracks, from changing the radiator, or from changing other system components without first clearing the system of air. The presence of bubbles, particularly if they are large, will cause cold air to escape into the cab.

Water pump malfunction or collapse

When the water pump weakens due to a flaw or breaks down, it will be unable to circulate the coolant inside the cooling system and pump water or coolant to the engine to cool it. This will result in cold air coming out, especially when the car is stationary, and it may get a little warmer if it moves.