HeaterIf you are preparing your car for the winters, then one of the most primary maintenance checks will be its HVAC system. The temperature can drop to excruciatingly low levels in the coming winters, and in these conditions, you cannot afford your car’s heater to slack, as it can potentially be life threatening.

So, before the temperature drops, make sure to check that your car’s heater is blowing adequate hot air, and resolve any issues that may be causing it to underperform. Below, the article will discuss faults in the engine components that can cause heater issues, and how you can fix them.

Clogged Up and Rusty Coolant Reservoir for the Heater

If you open the coolant cap and find noticeable amounts of rust inside, then you cannot expect the heater core to look any better. Keep in mind that the heater core is much smaller than your radiator, and hence, clogs up faster. The easiest way to find out that the heater core is in good shape is by checking the temperatures of the two hoses.

People often fail to remember that they have to set the temperature setting on hot and increase the blower motor intensity. This helps cool the heater core. On a properly operating heater core, the temperature drop difference between the hoses should be around 25 to 30 degrees Fahrenheit, and on a clogged up heater core the heat temperature can reach incredibly high levels.

The temperature drop can sometimes be so drastic that you can feel it simply by touching it. However, the most accurate way of measuring the temperature difference is to use an infrared thermometer. These tools are usually low in cost, and they offer high value for the price that you pay for them. The best fix for a coolant and heater core clog is to flush the radiator using a radiator flush.

The three main things that can impact your heater core is the engine temperature, coolant level and the coolant flow around the tubes. However, your vents may still produce low levels of heat despite the heater core working optimally. Another problem of the system has to do with the air distribution system.

Faulty Air Distribution System

The air distribution system blows air across the HVAC heat core and redistributes the hot air around the cabin compartments of the car. Often times, you may feel as if though your car’s vents are not blowing enough hot air, when in reality, the car’s HVAC system is working fine. The problem in this situation has to do with a restricted airflow. Thus, if you full blast your blower motor but feel less air exiting out of the vents, then it is best that you check the cabin air filters and replace them.

Thus, most of the times, getting your car’s heater to get up and running seamlessly involve clearing out some of the clogged rusts in the tube, and replacing cabin air filters. If you still feel that the heater is not working in the highest condition, then you will have to take the car to a technician.