"For cold air: A vehicle A/C system is comprised of a compressor, condenser, expansion valve and evaporator. Refrigerant (aka Freon) is compressed within the compressor and turns into a hot gas. In the condenser, this hot gas is cooled to a liquid state and travels to the expansion valve. As the Freon goes through the expansion valve it returns to a low-pressure gas and rapidly cools within the evaporator. A fan blows over the evaporator and cools the air that eventually blows out your vents.

For warm air: Hot engine coolant is circulated through alittle radiator, called a heater core. A fan ahead of the heater core blows cold outside air over the fins. As this air travels over the heater core, it heats up and becomes the recent air which blows out your heater vents. If the heater core becomes clogged with rust or sludge, you'll not have heat. Also, if there alittle leak within the heater core, the passenger cabin can get steamy with fogged-up windows, otherwise you may smell coolant (a sweet aroma).

When you take your car for a car AC service, the technician starts by checking the cabin temperature while operating the AC. It should be approximately 5°C-10°C. They would then proceed to see the extent of the refrigerant present within the system.

When the refrigerant level drops it affects the AC’s ability to relax . In fact, one among the foremost common reasons why the air-conditioning isn’t cooling your car properly is that this . Using a pressure gage and a precision AC gas recharging machine, they flush the refrigerant out and tops it up to the recommended level.

While performing on this, they also check if there's any possible leak or crack within the AC line and hoses. The technician may use a UV dye to raised pinpoint a possible leak within the system.

Then comes the compressor, which is that the costliest component during a car AC system. It is what powers everything. If the compressor malfunctions, the entire AC system will fail. So, if there's a clear leak it might be due to a nasty seal and bearing. The compressor making whirring noise while operating could point to an equivalent thing. The best thanks to keep a compressor working is to urge it verified and serviced per annum . Also, confirm to urge them to exchange the compressor oil.

The condenser, which resides before the engine is checked for bent/damaged fins or a clogged line. A condenser becomes clogged thanks to leaves, dust and debris build-up. It also can really bring down the cooling efficiency of the AC. If such is that the case, the condenser is washed with mild water pressure so on not bend the fins.

Furthermore, they also see if the dryer is correctly functioning. They also do a final inspection of the evaporator for any moisture build-up. The moisture build-up is not good news. This is because the water content can seep into vital electrical components under the dashboard.

Finally, they clean the cabin filter or the HVAC filter (heating, ventilation, air conditioning) located under the glove box. After every 15,000km, the filter is replaced."theautopartsshop.com/ac-service