Important Components of an Air Conditioner | Heating and Air Conditioning Service in Katy, TX

Important Components of an Air Conditioner | Heating and Air Conditioning Service in Katy, TX

The air conditioner is composed of several parts and units that must work in harmony with each other to properly regulate the ambient temperature. If a single component fails, it either disables the entire unit or makes it difficult for the other parts to do their job. This increased strain can cause these other parts of the unit to start failing as well.

You will need professional heating and air conditioning service in Katy, TX to identify these issues and fix them. It is not advisable to attempt a DIY repair because the lack of knowledge and experience could complicate matters even further. That being said, every homeowner should have a basic understanding of what each component is capable of, and what could happen to the unit should the part fail.

Before hiring professional heating and air conditioning services in Katy, TX, it is important to learn about the basic components of an air conditioner and their functions.

The Compressor

The air conditioner takes the heat energy from inside the room and discharges into the outside environment. The compressor plays an important role because it changes the refrigerant from liquid to gas. The compressor applies pressure to the liquid to squeeze gas particles together. This is what ultimately cools your room, so if the compressor fails, then the refrigerant would fail to turn into liquid and will not extract heat from the target area.

If your compressor fails, it is advisable to opt for professional heating and air conditioning service in Katy, TX.

The Condensing Coil

The condenser is second only to the compressor in terms of importance. Its job is to help the gas, which is in a state of high temperature and pressure, take a liquid form. Think of the condenser as a type of heat exchanger, which explains why they sometimes look like radiators. The compressor is composed of hollow coils. As the hot gas enters into the condenser through the coil, it loses its heat and pressure and turns into a liquid.

If the condenser unit fails, the air conditioner as a whole will start failing as well. Only a professional heating and air conditioning service in Katy, TX should attempt repairs. This is a complicated unit with several parts and processes that require a deep understanding.

The Evaporator

The last stage in the cooling process involves the evaporator. As the gas takes a liquid form inside the compressor, it turns back into a gas upon entering the evaporator. This happens because the evaporator has a low pressure atmosphere that encourages liquid particles to separate once again.

During this phase, the fan uses hot air from the room to blow the colder evaporator coils and help reduce the ambient temperature of the room. The fan’s purpose in this context is to create intimate contact between the air and coils.

The gas exits out of the evaporator and starts a new cycle by entering the compressor, where the whole process is repeated once again. The air conditioner repeats this cycle until the room temperature reaches the desired temperature settings that the user sets on the thermostat. It goes without saying, that the evaporator requires deep understanding of the unit, it is highly recommended to have a professional heating and air conditioning service in Katy, TX perform repairs.

Air Filter

Air filters are used to keep the air conditioner clean. Heat and dust are a common phenomenon in Katy, TX. As more of these particles accumulate inside the AC unit, it becomes difficult for air to pass through. When this happens, your air conditioner unit responds by revving up its motor. Not only does this place increased strain on the parts, but it also increases your energy bills.

Working twice as hard means borrowing twice as much energy from the grid. But make no mistake; doubling down on the use of electricity is not going to produce cooler results. The end result is subpar cooling and inconsistent temperatures. The dirty air filter also releases dangerous toxins into the atmosphere very now and then, leading to unhealthy air full of contagious elements.

This increases the chances of allergic reactions shown by family members. The air filter is a relatively simper unit that can be cleaned by average people but it is recommended to have a professional heating and air conditioning service in Katy, TX take a look.  The general rule of thumb about air filter sis to have them changed very 3 to 6 months depending on what your manufacturer recommends.

Expansion Valve

The expansion valve is situated between the evaporator and condenser coils. It’s main function is to remove the high pressure from the coolant so it can turn back into a gas. This conversion takes place in the unit’s evaporator. Because the expansion valve is difficult to reach, it should be repaired by a professional heating and air conditioning service in Katy, TX.

A constantly running compressor is an indication that the expansion valve has failed.


Although not part of the air conditioner unit itself, the thermostat plays an important role in regulating the temperature of the room. It sends signals to and from the air conditioner to indicate if the compressor and other parts should increase their settings. If the thermostat fails to respond to ambient temperatures appropriately, it will send the wrong signals to the AC.

In the case of an already cool environment, the air conditioner will continue to reduce the temperature because the thermostat fails to record accurate ambient temperatures. For warm temperatures, the thermostat believes that the ambient temperature is at desired settings and fails to start the air conditioner. This will inevitably result in uncomfortable room temperatures.

It is possible that the thermostat is placed directly underneath the sun, and in this case you should find a different location for the thermostat. If the part has failed entirely, it should only be repaired by professional heating and air conditioning service in Katy, TX. A DIY task could result in more damage since there are several electrical components that require specialized understanding.

If you are in need of heating and air conditioning services in Katy, TX, give our highly specialized teams at Cypress Heating and Air a call and have your unit repaired promptly.