Different Types of Aircon Coils and How They Contribute

Air conditioners help keep our homes cool. They have parts called coils that are very important for this job. There are two main types of coils – the evaporator coil and the condenser coil.

The evaporator coil takes heat out of your house, and the condenser coil gets rid of it outside. These coils work together to move warm air, compress a cooling liquid, and push out heat into the air outside.

For them to do their job well, they need to change from gas to liquid over and over again.

If we don’t check on these coils often, our air conditioners might not work right or could cost more money to run. Experts say we should get them checked every few months so they stay clean and work well.

This article tells you how each type of coil helps your air conditioner keep you cool. It explains what can go wrong if we don’t take care of them. Coils are parts you need to know about for a happy home in hot weather! Let’s find out more about these helpful pieces inside an air conditioner.

Understanding Different Types of Aircon Coils

In the realm of air conditioning systems, coils play a pivotal role in temperature regulation and comfort. Delving into the distinct types of aircon coils not only demystifies their function but also highlights their critical contribution to efficient climate control within indoor spaces.

Evaporator Coil

The evaporator coil plays a crucial role inside your air conditioner. It sits in the indoor unit and is often part of the air handler. This coil holds a cold refrigerant that absorbs heat from the indoor air as it passes over it.

The process also removes humidity, making your room cooler and more comfortable.

As warm air from your home blows across the chilled evaporator coils, heat absorption occurs. This turns the refrigerant from liquid to gas. Air then moves through filters before re-entering your home at a lower temperature.

Proper functioning of this component is essential for efficient cooling and maintaining good indoor air quality.

Condenser Coil

Condenser coils play a crucial role in your air conditioning system. They sit in the outdoor unit and get rid of heat absorbed from your home’s indoor air. As hot gas from the evaporator coil moves to the condenser, it turns back into a liquid.

This change releases heat into the outside air, cooling your home.

Keeping condenser coils clean is vital for the system to work well. Dirt and debris can block heat transfer and make the unit work harder, which may lead to higher energy bills. A fan motor helps by blowing air over the coils, aiding in dissipating excess warmth quickly.

Regular maintenance ensures these coils function efficiently and keep comfort levels high in your living space.

The Role of Each Coil in Air Conditioning

The evaporator coil plays a key part in your air conditioner. It sits inside the indoor unit and cools the air as it flows over it. This coil removes heat from your home’s air and also pulls out moisture, making the air feel cooler and drier.

Outside, you’ll find the condenser coil as part of the outdoor unit. Its job is to let go of all the heat that’s been taken from indoor air. The refrigerant inside this coil releases its heat into the outside air with help from a big fan in the condenser unit.

Together, these coils make sure your HVAC system runs well by taking care of heating and cooling cycles. They use refrigerants that move between gas and liquid states to transfer heat effectively in this closed system.

The right balance between these coils keeps energy efficiency high for your central air conditioner or heat pump.

Keep them clean for good airflow which makes for better performance! If dust builds up or damage occurs, you might see higher bills or less comfort at home. So check on those coils regularly to keep things running smoothly!

Potential Issues with Aircon Coils

Aircon coils are vital for the cooling process in air conditioners. Dirty or damaged coils can cause several problems.

  • Blocked airflow happens when dirt and debris collect on the evaporator coil. This makes it hard for air to pass through, reducing system efficiency.
  • Poor heat dissipation occurs if the condenser coil is dirty or covered. The unit can’t release heat properly, forcing it to work harder.
  • Freezing over of the evaporator coil is due to low refrigerant levels or restricted airflow. Ice forms on the coil, stopping the AC from cooling your space.
  • Reduced cooling capacity happens when coils cannot transfer heat effectively. Your home stays warm even if the HVAC systems run full blast.
  • Increased energy bills come from coils that aren’t working well. When they struggle, they use more electricity trying to keep up.
  • Corrosion happens over time because of moisture and chemicals in the air. It leads to leaks and a drop in performance in both evaporator and condenser coils.


Understanding how air conditioner coils work helps us keep our homes cool. The evaporator coil plays a key part indoors, removing heat and humidity. Outside, the condenser coil releases that heat into the air.

To stay comfortable and save energy, we need to maintain these coils well. Remember to have them checked regularly for a happy and cool home environment!


1. What are air conditioner coils?

Air conditioner coils are crucial parts of your HVAC unit. They come in two types: evaporator coils, which absorb heat from the indoor environment, and condenser coils that release the heat outside.

2. How do expansion valves work with AC coils?

Expansion valves control the flow of refrigerant to the evaporator coil in an air conditioning unit. They allow the refrigerant to expand and cool before it enters the coil, helping with the gas to liquid transformation.

3. Why is copper tubing used in AC coils?

Copper tubing is often used in HVAC equipment because it’s conductive and corrosion-resistant. This makes it great for efficient heat exchange when refrigerant passes through these tubes within aircon coils.

4. Can a gas furnace affect my aircon system’s efficiency?

Yes! A gas furnace can play a part in your overall heating and air conditioning system by providing warm water vapor that circulates through fan coil units, contributing to warming up your house during cold weather.

5. What does an expansion valve do exactly?

An expansion valve helps regulate refrigerant flow into evaporator coils where it evaporates; this process absorbs heat from inside your home, cooling down the indoor environment effectively during hot days.

6. Why might I need thermostatic expansion valves for my HVAC unit?

Thermostatic expansion valves precisely control how much refrigerant flows into your evaporator coil based on how much cooling is needed; this helps keep temperatures stable throughout your home without unnecessary energy use or wear on other hvac components.

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