Learn How to Clean the Outside of the AC unit Properly

 Learn How to Clean the Outside of the AC unit Properly

In the scorching heat of summer, your trusty air conditioning unit becomes your best friend. However, for it to keep you cool and comfortable, it needs a little TLC. Many people are focused on cleaning the filters inside, but it’s equally essential to clean the outside of the AC unit. If you neglect it, this can lead to decreased efficiency and even costly repairs. In this blog , we’ll walk you through the steps to clean the outside of your AC unit properly.


Your air conditioner’s outside unit is exposed to the elements, making it susceptible to dirt, leaves, and debris. Over time, this can obstruct airflow and reduce its cooling efficiency. Regular maintenance, including cleaning the outside unit, is crucial to keeping it running smoothly and extending its lifespan.

Safety First

Safety is the most important part of cleaning your AC unit. Before starting, ensure that you turn off the power to the unit and wear safety goggles and gloves. By taking these steps, you protect yourself from potential electrical hazards and shield your eyes and hands from dust and debris. This simple step of prioritizing safety sets the stage for a hassle-free and secure cleaning process, allowing you to maintain your AC unit without any concerns for personal harm.

Turn Off the Power

When you start cleaning, ensure AC is turned off. It’s imperative to deactivate the power supply. Locate the power disconnect switch for the unit and turn it off. This crucial step ensures your safety during the cleaning process, preventing any inadvertent electrical mishaps. 

By cutting off the power source, you create a secure environment for cleaning the unit effectively and without risk. Always remember to double-check that the power is off before starting any maintenance tasks on your air conditioning system.

Remove Debris

Before commencing the cleaning process, start by clearing away any debris surrounding your AC unit. Leaves, twigs, or grass clippings can accumulate, hindering the unit’s functionality.

Employ a gentle touch, either with your hands or a brush, to remove these obstructions. By ensuring the area around the unit is free from debris, you pave the way for a more efficient cleaning procedure.

This initial step guarantees that your cleaning efforts directly target the unit’s components, optimizing the overall cleaning impact and enhancing the unit’s performance.

Cleaning Supplies

Gather essential cleaning supplies before embarking on the task of cleaning your AC unit. You’ll need a garden hose equipped with a suitable nozzle attachment, mild detergent, a soft brush and a fin comb.

These tools are indispensable for a thorough and effective cleaning process. The garden hose will help dislodge dirt and dust, while the detergent and brush ensure a deep clean of the unit’s fins.

The fin comb, on the other hand, is crucial for straightening any bent fins, allowing for optimal airflow and improved performance of your AC unit.

Cleaning the Fins

Cleaning the fins is a crucial step in maintaining your AC unit’s efficiency. Begin by gently spraying the fins with a garden hose to remove surface dirt and dust.

It’s important to exercise caution here and avoid using excessive water pressure, as this could damage the delicate fins. Next, create a mixture of mild detergent and water, and use a soft-bristle brush to meticulously clean the fins.

Ensure thorough coverage, and then rinse with the hose again. This process effectively removes accumulated debris, allowing for optimal airflow and enhancing your AC unit’s cooling performance.

Straightening Bent Fins

Inspect the fins for any bent or damaged ones. If you find any, use a fin comb to carefully straighten them. This step is essential for maintaining proper airflow.

Cleaning the Coil

Coil cleaning is an essential part of an AC unit’s efficiency. To open it, remove the top grille of the AC unit. Employ a mixture of mild detergent and water, using a soft-bristle brush to easily clean the coil. It’s essential to clean both sides of the coil diligently.

This process eliminates accumulated grime and dust, facilitating optimal heat exchange and ensuring your AC unit operates at peak performance, keeping you cool during the sweltering heat of summer.

Cleaning the Fan

Don’t forget to clean the fan blades of your AC unit. Use a damp cloth and mild detergent to gently wipe down the blades. Ensure the blade. You must completely dry the blades before reassembling the unit.

This step not only removes dust and dirt that can accumulate on the fan blades but also ensures that the fan operates smoothly, contributing to the overall efficiency and effectiveness of your air conditioning system. Proper maintenance of the fan keeps the cool air flowing steadily in your home during hot summer days.

Reassembling the Unit

Now, it’s time to reassemble your AC unit. Carefully place the top grille back into position and secure it firmly with the appropriate screws or clips.

Ensuring that all components are properly reattached guarantees that your AC unit functions optimally. This step is vital to safeguard against any potential issues or inefficiencies caused by loose or improperly secured parts.

With the unit correctly reassembled, you can enjoy the benefits of a well-maintained and efficiently running air conditioning system.

Powering On

After completing the cleaning process, it’s time to power your AC unit back on. Simply switch on the power disconnect that you turned off earlier. Additionally, reset your thermostat to your preferred temperature.

This straightforward step ensures that your freshly cleaned AC unit can resume its efficient cooling operation, keeping your indoor environment comfortable during the scorching summer heat.

Maintenance Tips

To maintain your AC unit’s efficiency, follow these tips. Periodically trim nearby vegetation to prevent airflow obstruction.

Cover the unit during the off-season to prevent debris buildup. Regularly changing the air filter improves performance. Schedule professional maintenance annually to keep your system running smoothly.

These simple steps ensure your AC unit operates at its best, providing you with consistent cooling and energy savings.

Benefits of Regular Cleaning

Regularly cleaning your AC unit’s exterior offers numerous benefits. It enhances efficiency, reducing energy consumption and utility costs.

A well-maintained unit lasts longer, saving you from costly replacements. Plus, it ensures consistent cooling performance during sweltering summers, keeping your home comfortable.

By incorporating regular cleaning into your maintenance routine, you not only improve your AC unit’s lifespan but also enjoy a cooler, more energy-efficient environment.


In conclusion, proper maintenance, including cleaning the exterior of your AC unit, is essential for optimal performance and longevity.

By following the outlined steps, you ensure efficient cooling, lower energy bills, and a longer lifespan for your AC system. Regular upkeep is a simple yet effective way to stay cool during the hottest months while saving money and avoiding unexpected repairs.

Frequently Asked Question

It’s recommended to clean the outside unit at least once a year, preferably before the start of the cooling season.

No, it’s not advisable, as high-pressure water can damage the fins. Stick to a garden hose with a nozzle attachment.

If you suspect a refrigerant leak, it’s crucial to contact a professional HVAC technician for repairs.

Yes, turning off the power is essential to prevent electrical accidents during the cleaning process.

Cleaning the inside components is best left to trained professionals to avoid any damage or injury. Regularly cleaning the outside is sufficient for homeowners.

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