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Common Challenges With AC Coils

Common Challenges With AC Coils
The air conditioning system in your home is composed of various parts and components. These components work together to create the optimal temperature inside your home to maintain your comfort. If one of these parts is in disrepair, the whole AC unit will be affected negatively. As Bellingham’s top AC repair service experts, we will focus this blog post on the importance of one of these parts; the AC coils. We will explain what they are, what challenges to expect, and answer frequently asked questions about these coils.

What are AC Coils?

Air conditioning coils are essential to transferring heat into the refrigerant that runs through the air conditioning system. The refrigerant fluid absorbs the heat from the home and sends it through the coils, where it is compressed into a gas. As it compresses into a gas, the heat is released, and the refrigerant fluid cools the air. Because these AC coils are integral to the unit’s function, they must be maintained and cared for.

Common Challenges to Expect

As with any part of the AC unit, AC coils come with problems that develop over time. As a wise homeowner, it is important to be aware of these issues so that you know when to call Bellingham AC repair services.

Dirty Coils

AC coils accumulate a lot of dirt and debris that must be cleaned periodically. When they are inundated with too much dirt, their efficiency in transferring heat will decrease. As a result, your AC will not work the way it needs to in order to cool your home.

Refrigerant Leaks

AC coils can freeze if there is a refrigerant leak present. Refrigerant fluid is responsible for cooling the air circulating through the air conditioning system. If it leaks, it will affect any structure that it touches, including the AC coils. If you notice them freezing up, you will need to contact a Bellingham AC repair service to help you resolve the issue. Refrigerant fluid is very toxic and poisonous; we do not recommend attempting the repair yourself.


If the AC coils are exposed to too much moisture, they will corrode over time. For this reason, if you notice any leaks around your AC unit, it is important to have a technician come out as soon as possible to repair the problem.

Clogged Filters

If the AC’s filters are clogged, the airflow will be restricted and not hit the AC coils as required. Thus, the unit’s efficiency will plummet, causing an increase in your energy bills. The AC will also not work as well to cool the home.

Improper Installation

The coils of the air conditioning system can also be affected by improper installation. This is a common occurrence when the AC wasn’t installed by a Bellingham AC repair service technician. This will cause the unit to wear out faster, requiring an AC replacement.


Sometimes the coils are just old and lose their ability to function according to design. This is when it’s time to either replace the coils or the whole unit altogether, depending on its efficiency.

Frequently Asked Questions


How Often Do AC Coils Fail?

Most AC coils are very durable and last 10 years or more, depending on how well the AC is maintained.

Can You Just Replace the Coils On an AC?

They are typically very expensive to replace, so when they do fail, we recommend a total AC replacement.

Is it Expensive to Replace AC Coils?

AC coils are very expensive to replace because of the expensive parts and labor involved in this type of work. On average, an AC evaporator coil replacement can cost $1,500 to $2,500, depending on the manufacturer of the unit and the availability of parts. When your AC coils fail, it is usually more cost-effective to buy a whole new unit.

Bellingham AC Repair Services

Is your AC in tip-top shape for the upcoming summer months? Contact CM Heating for any needed repairs or maintenance to ensure that you live your best, most comfortable life this summer!
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