It's expensive for two main reasons. First, it is responsible for circulating the refrigerant between the evaporator and condenser coils. Second, it's a very complex piece of equipment with intricate details. Ignoring small refrigerant leaks in the air conditioner can make the system work harder to maintain the temperature, which can damage the compressor and potentially cost you thousands of dollars in replacement costs.
An air conditioner has many different components that work together to cool your home. If one of these components starts to fail, it can cause the entire system to fail. One of the most expensive parts of your air conditioning unit is the compressor. As the heart of your system, the compressor is responsible for circulating refrigerant through the system, which is responsible for cooling the air in your home. Not only is replacing an air conditioning compressor labor-intensive, but refrigerant is also a very expensive product.
During winter, this fan stays inactive until the air conditioner is turned back on in spring, when temperatures start to rise. This can be a problem for the condenser fan motor. The bearings and shaft of the air conditioner motor can get stuck or rust all winter long without move.