Talk about best-selling cars and you'll be talking about Toyota. For more than 60 years, this largest Japanese auto maker and one of the world's foremost car manufacturers, has produced remarkable standard passenger cars, best-built luxury vehicles, top-performing off-road trucks and revolutionary hybrid autos that never failed to get into the list of best vehicles. Among Toyota's famous cars are the highest-selling Toyota Corolla, the sporty Toyota Camry and the long-time popular Toyota Corona. In the truck and SUV segment, there are the names Toyota Hi-Lux, Toyota Tacoma, Toyota 4Runner and Toyota Land Cruiser. Also leading the list in the van and minivan segment are Toyota's Van, Previa and Sienna. With the first mass-produced hybrid vehicle, the Toyota Prius and its successor Toyota Highlander, Toyota once again put itself at the forefront of the auto industry.

Since its beginnings in the mid of the 20th century, Toyota did not only exhibit superiority in terms of performance and reliability but also in terms of styling and interior design. In terms of comfort and convenience, Toyota does equally well by pampering its users with extensive line of comfort and convenience features like the air conditioning system. Most cars nowadays have standard a/c for the occupants' maximum comfort. This system's primary function is to make your car's interior colder by removing heat from the warm cabin air. It also cleans and dehumidifies the air entering the car from the outside by taking off excess moisture. Modern cars such as Toyota's latest models have highly advanced a/c systems that allow both the front and the rear passengers to select the temperature they want.

Cars' A/C systems work in the same way as your refrigerators at home. Most people think that it adds cold air into the car but the truth is "cold" is only the absence of heat. The a/c makes the air "cold" by removing heat out of it. The air, in its un-heated condition makes your ride inside the car more comfortable, especially during the hottest days of the year. There are three major components in the air conditioning system, the compressor, the condenser and the evaporator. A refrigerant gas is moved by the compressor around the pipe. It comes from the evaporator as a low pressure gas and then it is compressed in the compressor. Then it cools off in the condenser where it also turned into a high-pressure liquid. It goes to the evaporator through the expansion valve and there it absorbs again large amount of heat from the warm air blown to the evaporator by a fan and the cycle continues, constantly keeping your ride comfortable and enjoyable.