Eco Friendly Hacks

How to Clean AC Evaporator Coils Inside House? See 5 Amazing DIY Hacks!

How to clean AC evaporative coils inside house

Air conditioning systems play a vital role in keeping our homes comfortable during the hot summer months. However, the AC evaporator coils can accumulate dirt, dust, and other debris over time, affecting their efficiency and performance. Regularly cleaning the evaporator coils is essential to ensure the optimal functioning of your AC system. In this detailed guide, you will explore effective DIY hacks to clean AC evaporator coils inside the house. Let’s dive in!

Understand the Functioning of AC Evaporator Coils

AC evaporator coils are typically located inside the indoor air handler unit. These coils contain refrigerant, which absorbs heat from the surrounding air and cools it down. The cooled air is then distributed throughout the house via the ductwork. It’s important to note that the evaporator coils work in conjunction with the condenser coils, which are usually located outside the house.

As your AC system cools the air, the evaporator coils act as the primary component responsible for absorbing heat and humidity. When dirt and debris accumulate on these coils, it hampers their ability to function efficiently, resulting in reduced cooling capacity and increased energy consumption. Cleaning the evaporator coils not only enhances the system’s performance but also helps maintain good indoor air quality.

Signs of Dirty Evaporator Coils

Recognizing the signs of dirty evaporator coils can help you address the issue promptly. Some common indicators include:

  • Reduced cooling capacity
  • Longer cooling cycles
  • Uneven cooling throughout the house
  • Increased energy bills
  • Ice buildup on the coils

If you notice any of these signs, it’s time to clean. your AC evaporator coils

Importance of Cleaning Evaporator Coils

Regularly cleaning the evaporator coils offers several benefits, such as;

✔️ Improved cooling efficiency 

Clean coils allow for better heat transfer, ensuring optimal cooling performance.

✔️ Energy savings

When coils are clean, the AC system doesn’t need to work as hard, resulting in reduced energy consumption.

✔️ Extended lifespan

Proper maintenance, including coil cleaning, can prolong the life of your AC system.

✔️ Better air quality

Cleaning the coils removes accumulated dust, pollen, and other pollutants, promoting cleaner indoor air.

Preparing for the Cleaning Process

Before starting the cleaning process, gather the following tools and materials;

  • Screwdriver
  • A vacuum cleaner with a brush attachment
  • Soft brush
  • Mild detergent or coil cleaner solution
  • Compressed air canister or air compressor
  • Water and vinegar solution (if using the vinegar-based hack)
  • Protective gear (gloves, goggles, mask)

=> Ensure that the AC system is turned off and unplugged before proceeding.

Safety Precautions

While cleaning AC evaporator coils, it’s important to prioritize safety. Follow these precautions;

  • Turn off the AC system and disconnect the power supply.
  • Wear protective gloves, goggles, and a mask to safeguard against potential allergens and chemicals.
  • Avoid using excessive force when cleaning to prevent damage to the coils.
  • Be cautious when handling cleaning solutions or compressed air.

By adhering to these safety measures, you can ensure a safe cleaning process.

How to Clean AC Evaporator Coils Inside House: See 5 DIY Hacks

Now, let’s explore five effective DIY hacks to clean your AC evaporator coils;

#1: Using a Vacuum Cleaner

  1. Gently remove the access panel to expose the evaporator coils.
  2. Use a vacuum cleaner with a brush attachment to remove loose dust and debris from the coils.
  3. Pay special attention to the fins and crevices to ensure thorough cleaning.
  4. Avoid applying excessive pressure to prevent damage.

#2: Using a Soft Brush and Mild Detergent

  1. Mix a mild detergent with warm water to create a cleaning solution.
  2. Dip a soft brush into the solution and gently scrub the coils, removing dirt and grime.
  3. Rinse the coils with clean water to remove any residue.
  4. Allow the coils to dry completely before reassembling the unit.

#3: Using Compressed Air

  1. Attach the compressed air canister or air compressor to the coil assembly.
  2. Blow compressed air through the coils, dislodging dust and debris.
  3. Ensure proper ventilation to prevent the blown dust from circulating in the room.
  4. Wipe away any loosened debris with a soft cloth or vacuum cleaner.

#4: Using Vinegar and Water Solution

  1. Create a solution by mixing equal parts water and vinegar.
  2. Apply the solution to the coils using a spray bottle, ensuring thorough coverage.
  3. Allow the solution to sit for a few minutes to break down dirt and grime.
  4. Rinse the coils with clean water and wipe away any remaining residue.

#5: Using a Commercial Coil Cleaner

  1. Purchase a commercial coil cleaner from a reputable supplier.
  2. Follow the manufacturer’s instructions for the specific product.
  3. Apply the coil cleaner to the coils and let it sit for the recommended duration.
  4. Rinse the coils thoroughly with water, removing any cleaner residue.

Tips for Effective Cleaning

To maximize the effectiveness of your cleaning efforts, consider the following tips;

  • Clean the coils at least once a year, preferably before the cooling season begins.
  • Avoid using harsh chemicals or abrasive cleaning tools that can damage the coils.
  • Keep the surrounding area clean to prevent debris from accumulating on the coils.
  • If you’re unsure about the cleaning process, consult the manufacturer’s guidelines or seek professional help.

Preventive Measures

To maintain clean evaporator coils in the long run, follow these preventive measures;

  • Change or clean the air filters regularly to prevent dust and debris from reaching the coils.
  • Keep the surrounding area clean and free from dirt, leaves, and vegetation.
  • Schedule regular HVAC maintenance checks to identify any potential issues and clean the coils professionally.

By incorporating these preventive measures, you can reduce the frequency of coil cleaning and ensure optimal performance.

When to Seek Professional Help

While DIY cleaning methods are effective in most cases, certain situations may require professional assistance:

  • The coils are heavily soiled or damaged.
  • The AC system is still not functioning efficiently after cleaning.
  • You’re uncomfortable or unsure about performing the cleaning process yourself.

In such instances, it’s best to contact a professional HVAC technician to assess the situation and provide the necessary expertise.


Regularly cleaning AC evaporator coils is crucial for maintaining the efficiency and longevity of your AC system. By following the DIY hacks mentioned in this guide, you can effectively clean the coils and improve the cooling performance of your AC unit. Remember to prioritize safety, adhere to the recommended precautions, and consider professional help when needed. Enjoy cleaner and cooler air throughout your home!


Can I clean the AC evaporator coils without professional help?

Yes, you can clean the AC evaporator coils yourself using the DIY hacks mentioned in this guide. However, exercise caution and follow safety guidelines.

How often should I clean my AC evaporator coils?

It is recommended to clean the AC evaporator coils at least once a year, preferably before the cooling season begins.

Can I use bleach to clean the coils?

No, it is not advisable to use bleach as it can corrode the coils and cause damage. Stick to mild detergents or commercial coil cleaners.

Is dirty evaporator coils a common cause of AC problems?

Stay tuned with our latest sustainable posts