Nobody wants their AC to break down during summers because the comforts of modern living are so addictive that living without cooling is simply unthinkable. The one critical component of the air conditioner which plays a vital role in ensuring cool and optimal humidity interiors is the Evaporator Coils. You must apparently be thinking, how can some coils be important? So today, we shall tell you more about the evaporator coils and their working and why their maintenance is imperative.
Evaporator coils or cooling coils are a crucial component of the air conditioner that absorbs or extracts heat from your home’s air. These coils are made of copper, steel, or aluminum, as these metals are known to be good conductors of heat. The evaporator coils work together with the condenser coils to extract heat from the indoor air and release it outdoors, completing the cooling process.
Location Of Evaporator Coils
If you were hoping to see the evaporator coils from outside, that’s not possible. It is because these coils are located inside the system. In the HVAC system, you can find the evaporator coils either on the fan’s air intake side of the furnace’s outlet side. You can only see them after taking off the cover of the unit.
Working Of Evaporator Coils
When the AC runs, the compressor draws cold, low-pressure liquid refrigerant through the refrigerant line or tubing in the evaporator coil. But before the refrigerant enters the evaporator coil, it passes through an expansion valve. This valve releases pressure from the liquid refrigerant and cools it down rapidly. It is pretty cold, almost chilly when the refrigerant or the coolant enters the evaporator coil. This allows it to absorb the heat from the air passing over it easily.
As the coils absorb the heat, the refrigerant becomes warm and evaporates. When the moisture present in the warm indoor air comes in contact with the cold surface of the evaporator coils, it condenses into liquid and drips down as water droplets into the drip pan or condensate pan. The collected water passes through the drain line and is expelled outside. In this manner, the evaporator coils cool down the air entering the home and also remove moisture from it.
The Necessity Of Maintenance Of Evaporator Coils
Maintenance of evaporator coils is necessary to keep them clean and in top shape. The proper functioning of evaporator coils is hampered by its two biggest enemies, namely:
1. Dust – Although the evaporator coils are positioned inside a protective cover yet, the dust has a way of still finding its way inside. It deposits over the coil surface. With time, more and more dust collects and covers the entire coil surface. Slowly, the accumulation grows and becomes a problem because now the indoor air cannot come in direct contact with the coils. It results in poor heat and moisture extraction. So the interior of your home will no longer feel comfortable. Cranking down the temperature further will also bring no relief. To prevent this situation, maintenance of the evaporator coils is essential.
2. Mold – Warm air and moisture are the perfect recipes for mold growth. The surface of the evaporator coils beautifully fulfills both requirements. The problem with mold is that it will again act as an obstruction, preventing warm indoor air from coming in direct contact with the coils. This, however, is the least of your concerns as the threat to your continued good health is higher. Mold is a health hazard. The air passing over mold-grown coils will pick up its spores and spread them inside the house. Inhaling these spores will put your well-being and that of your family or any visitors in jeopardy.
Impact Of Skipping Evaporator Coils Maintenance
First, we would like to clarify one thing. The maintenance of evaporator coils is not a separate process. It is a package deal that comes as a part of annual HVAC maintenance or preventive HVAC maintenance. Although, if the need arises, you can request your HVAC contractor for this service exclusively. We still advocate complete maintenance of the HVAC system because if dust can wreak havoc on one component, it will most likely do so with others as well. Now let us see what will happen if you forgo maintenance of the evaporator coils.
1. The efficiency of the AC will decline.
2. Your indoor space will no longer feel adequately cool.
3. The evaporator coils may start freezing.
4. The power bills will increase sharply.
5. Your AC will develop faults and snags more often.
6. The indoor air quality will take a nosedive.
7. The life of your system will most likely be cut short.
Thwarting Evaporator Coil Problems
If you want to ensure that the coils of your system continue to maintain their good state, you can do a couple of things. These include:
1. Stick to a strict annual AC maintenance routine. It should preferably be done before its first use of the season. Nevertheless, if that’s not possible, try to schedule it before the season hits its peak.
2. Change the air filters monthly. The idea is to ensure that they don’t become clogged and interfere with the airflow.
3. While cleaning your home, do clean the exterior surface of the vents, registers, and air handlers. If their exterior is clean, less dust is likely to find its way inside the HVAC system.
Clean evaporator coils are essential to cool interiors. If you don’t want any disruptions in your comfort, you must book AC maintenance timely. The maintenance will check your complete system and make sure that the evaporator coils are in top order. Apart from that, changing the air filters monthly will help keep unwanted dust and other particles at bay. Two small steps and you are all set for comfortable summers.
If you have not scheduled your AC maintenance or if you think your AC is not working properly, contact Aztil Air Conditioning. We are a family-owned HVAC business operating in South Florida since 1981. Our trained and certified technicians are fully equipped to handle all sorts of AC problems. To book an appointment, call us at +1-888-729-8452.