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What are Evaporator Coils?

air-conditioningThe HVAC is a complex system of machinery that depends on small and seemingly trivial parts to do their job, or else the entire system may be thrown into disarray. This is why it is so important that you have a HVAC professional perform necessary maintenance and repairs on your HVAC system regularly. While there are some aspects of HVAC maintenance that the average homeowner should be doing themselves, like replacing an air filter, other tasks are complex, and one wrong move, however small it may seem, could add up to a rather expensive repair bill.

Case in point: the evaporator coil. The evaporator coil, which is often simply referred to as the coil, is one of the most fundamental components of the HVAC system, the unsung hero of the cooling and heating. It has one job, and that is to transfer heat. If the coil isn’t able to do its job properly, then the ability of your HVAC system to regulate your home’s temperature is entirely questionable.

The coils themselves may not look like they are such a complex piece of machinery, as they appear to be little more than a series of small pipes. However, if any of these pipes become damaged, then your HVAC system may not be able to function properly.

In the United States, there are three types of evaporator coils that are used:

  • Vertical: This is designed to support airflow upwards and downwards, using water captured in the air to reduce humidity in the household by enforcing drainage.
  • Cased: These have a protective outer shell that makes them more freeze resistant, and are typically used in northern climates where temperatures are typically low throughout much of the year.
  • Uncased: This type of evaporator coil works in the same way as the cased coil, but is easier to customize to independent household needs.

The most common type of evaporator coil used in North Florida is the vertical coil.

The evaporator coil is separate from the primary HVAC unit that sits outside of your home. The coil itself will be located inside, often either as a component of your air handler or with your furnace. Refrigerant runs inside the coil, evaporating as it absorbs heat out of the air in your home. While the HVAC unit outside is the motor of the HVAC operation, the evaporator coil is the brain, using the air in your home to transfer energy to create a more temperate indoor atmosphere. The HVAC unit pushes air through the evaporator coil, and it is thanks to the coil that the air coming out of your home’s vents is in line with what you’ve ordered from the thermostat.

If you think your evaporator coil may be damaged, don’t attempt to address the issue yourself. Contact All Weather Contractors to consult with a licensed and experienced professional who can make the repairs necessary for your HVAC system to be up and running in no time at all.