![]() ![]() Water in the front foot wells of the car may suggest issues with the heater matrix or related pipework and hoses.However, there are some obvious signs that should lead towards the root cause of specific issues including (but not limited to): ![]() What if something goes wrong with the heating system?ĭue to the large number of components within a car's heating system diagnosis of problems can prove challenging. Heated air is ducted to the various locations around the vehicle with additional controls for air vents at the key areas including across the width of the dash and sometimes in the rear centre console and door pillars. Some of these controls are mechanical and link directly to flaps, vents or valves varying the different elements of the system. The majority of the heating system is housed within the dashboard allowing the controls to be conveniently located in the centre console or central dash area. This determines how much heat is allowed to flow from the engine to the matrix and therefore the level of heat that is added to the airflow. The matrix temperature is controlled via a valve or regulator which is linked to the dashboard controls. The airflow is passed through the matrix and is warmed as required. In water cooled engines the matrix is heated using hot water which is piped in from the engines cooling system. These systems often include options for rapid defrosting and demisting of windows.Īirflow for the system enters the car through an inlet somewhere on the bonnet and this is ducted to the heater matrix, core or radiator. The combined system will then regulate the airflow and temperature as required to maintain this regardless of changes to external temperature, sunshine etc. Some heating systems integrate with air-conditioning and or climate control systems allowing a constant internal temperature to be set. Getting into the details of the heating system Finally, the speed of the airflow can be controlled by a variable fan. Additionally most heating systems allow for the car's airflow to be recirculated and thus preventing external air from entering the cabin. The air temperature can be adjusted from ambient external (fresh air) to 50˚C+. Using dash board controls the air can usually be directed to different locations of the interior including the windscreen and side windows, directly at the driver and passengers or into the foot wells and floor area (or variable combinations). What is the heating system/what does it do?Ī car's heating system is responsible for providing fresh, warm or hot air to the interior cabin as required by the occupants. ![]()
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