Your car’s air conditioning has three main types of switch: one that you press to turn it on or off, one that breaks the circuit when the pressure is too low, and one that breaks the circuit when pressure is too high. The pressure sensors help guard against leaks and other faults. In modern cars, air conditioning sensors measure pressure, temperature and even the level of coolant in the system. Without these sensors and switches, your air-conditioning would not work as it should. As these parts perform vital roles in maintaining your comfort, it will become obvious when they stop working. When this time comes, it is important to buy high quality replacements to ensure they are good enough to do their job properly.