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Anyone that has had their air conditioner fail in the middle of the hottest day knows how truly miserable it can be. This can lead to panic when the unit begins to function improperly. These are the most common reasons for residential AC repair in Roswell to help educate homeowners on potential problems. Thermostat & Electrical Many times the problem can be directly linked to the thermostat. The air conditioner will only do what the thermostat tells it to do. Many times the signal from the thermostat to the unit is derailed by bad wiring. The wiring can become frayed from pests or incorrect installation. Sometimes the wires hang too close to the moving parts of the AC or are too long and are constantly stepped on. If the thermostat is not located in an ideal spot, the temperature can read differently than the rest of the house and the unit will not run when needed. Newer, digital thermostats are more accurate reading the temperature than older ones. Fans In order to circulate the cooled air around the house, there is a fan that blows the air across the cooling coils and into the ducts. Because this is a working machine, there are parts that tend to wear out and even break. The AC may be cooling the air, but the fan is not moving to circulate it. On many systems there is also a fan on the outside of the home that dissipates the heat from the refrigerant out into the world. If this fan is not working properly, more of the heat stays trapped in the coolant and it cannot capture more inside the house. Frozen Coils While the previous causes are related to the mechanics of an AC unit, frozen coils can many times be directly caused by lack of maintenance. As the air flows over the coils either inside or out, it drops little particles of dust and dirt. As this debris builds up, the refrigerant cannot transfer as much heat. This means warmer air being moved around the house. Frozen coils can also be caused by high humidity levels in the house. The moisture in the air condenses and freezes on the interior coils, acting just like a layer of dirt and making it harder for the coolant to trap the heat and take it outside. Low Coolant Many times the least common cause is the one most homeowners assume is the problem; low coolant. Inside the air conditioner, the refrigerant carries the heat from the inside to outside. This loop is a closed loop, having no spots where the refrigerant can leak out. That means that there is a hole somewhere in the line that is allowing the leak. Holes in the system can be indicative of more serious problems or incorrect installation. An air conditioner may seem quite complicated, but many times the problems are quite simple. A regular maintenance routine can detect most before they affect performance. Sometimes they are unavoidable and require a technician skilled in residential AC repair in Roswell. These tips can help homeowners understand what may be causing the problem when they call in for service.
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