
Regular cleaning of your air conditioning unit is crucial for its longevity. According to the article, dirty aircon filters can reduce airflow by up to 20%.
To extend the life of your aircon, it's essential to change the filters regularly. The article recommends replacing them every 3-6 months.
You might enjoy: How to Find Your Air Condiitioner Filters
Preparation
Before you start cleaning your air conditioner, it's essential to prepare the right tools and materials. You'll need a soft-bristled brush, a vacuum cleaner, and a gentle cleaning solution, as well as new filters if your old ones are not washable.
It's also crucial to know which type of filters you have, as some air purifying filters can only be removed with a vacuum cleaner and should not be washed. Always check your user manual for specific recommendations on cleaning and replacing filters.
Here are some key tools and materials you'll need for air conditioner cleaning:
- Soft-bristled brush
- Vacuum cleaner
- Gentle cleaning solution
- New filters (if old ones are not washable)
Gather Your Materials
Before you start cleaning your air conditioner, you'll need to gather the right materials. This includes a few items from around the house.

A screwdriver is a must-have, as it will help you access the inner workings of your AC. You'll also need a vacuum cleaner with a brush attachment to get into tight spaces.
Soft brush and mild detergent or dish soap are also essential for cleaning your AC. Bleach can be used, but be sure to follow the manufacturer's instructions.
A spray bottle and clean cloth or sponge will help you reach all areas of the unit. A bucket or large container can come in handy for mixing cleaning solutions.
Spray the Filter
Mix up a one-to-one solution of vinegar and water, and add it to a spray bottle. This solution is effective in killing bacteria on the filter. Spray both sides of the filter, and give it 10 minutes for the solution to work its magic.
Rinse the filter under running water before continuing. This step is crucial in removing any remaining bacteria and debris.
Related reading: Aircon Bacteria
Factors Affecting Frequency
The frequency of air conditioner cleaning depends on several factors.
If you live in a hot climate, your air conditioner may require more frequent cleaning to maintain optimal performance.
Frequent use is a key factor, so if you use your air conditioner often, it's likely to need cleaning more frequently.
The exact frequency will depend on how often you use your air conditioner and the climate you live in.
Regular cleaning can help prevent the buildup of dust and debris that can clog the air conditioner's filters and reduce its performance.
Curious to learn more? Check out: How Often to Clean Aircon Filter
Cleaning the Filter
Cleaning the filter is a crucial step in maintaining your air conditioner. It's recommended to clean the filter inside your window AC unit monthly, even if you don't clean the entire appliance.
Use a vacuum to clear away as much debris as you can from the filter, then wash it with warm, soapy water and let it dry completely before putting it back into your window AC unit. This will help keep your AC working smoothly.
For air purifying filters, it's best to clean them every month and change them yearly for consistent efficiency. Some filters are not washable, so be sure to remove any dirt gently with a vacuum cleaner.
You can also use a soft-bristled brush or vacuum cleaner to remove dirt and debris from the air filter. If the filters are washable, gently clean and rinse the air filter using a gentle cleaning solution.
Here are some general guidelines for cleaning your air conditioner filter:
Remember to always check your AC's user manual for individual recommendations, and don't forget to dry the filter completely before reinserting it into the unit.
Cleaning the Evaporator
Cleaning the evaporator coils is an essential part of keeping your air conditioner running efficiently and effectively. This process should be done at least once a year, or more frequently if you have pets, smokers, or people with allergies in your household.
To start, turn off the power to your air conditioner and locate the evaporator coils, which are usually found inside the indoor unit or air handler. Be careful not to touch any electrical components.
You'll need to remove the access panel or cover to expose the coils. This is a delicate job, so it's best to consult a professional if you're not comfortable doing it yourself.
Use a vacuum cleaner with a soft brush attachment to gently remove dust and debris from the coils. This will help prevent any damage to the coils or surrounding components.
If your air conditioner doesn't have FrostWash technology, which can clean the coils automatically, you'll need to apply a no-rinse coil cleaner or a mild detergent and water solution to the coils. Let it sit for a few minutes before wiping the area clean with a cloth.
Here's a step-by-step guide to cleaning your air conditioner's evaporator coils:
- Turn off the power to your air conditioner
- Locate the evaporator coils
- Remove the access panel or cover
- Use a vacuum cleaner with a soft brush attachment to remove dust and debris
- Apply a no-rinse coil cleaner or mild detergent solution
- Let it sit for a few minutes
- Wipe the area clean with a cloth
Remember to clean your air conditioner's filter regularly, as recommended by the manufacturer. This will help keep your air conditioner running smoothly and prevent any potential problems.
Cleaning the Drain
Cleaning the drain is a crucial step in maintaining your aircon's performance and preventing costly repairs. You'll need a wet-dry vacuum or a damp cloth to remove debris and dirty water from the drip tray.
The drip tray should be emptied and left to dry before reassembling. Check the drain to ensure there's a clear pathway for water to exit the unit.
If the drain is clogged, a 50/50 mixture of bleach and water can help clear it. Pour the solution down the drain to make sure it's clear.
To clear a plugged drain, follow it to where it ends and bring a wet-dry vacuum with you. Hold the vacuum hose to the end of the drain tube, and use a towel or duct tape to prevent air leakage.
Run the vacuum for two or three minutes to clear out any buildup that has accumulated.
A unique perspective: Aircon Drip Pan
Reassembly and Maintenance
Reassembling your window AC unit is a crucial step after cleaning and drying everything. A clean AC unit will power you through the hottest summer days.
Grab your hydrogen peroxide spray bottle and apply the solution to the areas where air flows in and out. The peroxide will help prevent mildew from growing and keep your air conditioner healthy for longer.
Cleaning your air conditioner is a critical element of maintenance that will keep your system healthier for longer, translating to fewer big-ticket repairs and a lower energy bill. With some time, patience, and precision, you can clean your air conditioner for better performance.
Reassemble Your
Reassemble your window AC unit after cleaning and drying everything.
Make sure to attach all the parts back in their original positions to avoid any damage or misalignment.
A clean AC unit will power you through the hottest summer days.
After reassembly, give your unit a final spray to prevent mildew from growing.
Grab your hydrogen peroxide spray bottle and apply the solution to the areas where air flows in and out.
Wait for the peroxide to dry before using your appliance.
Not only will you breathe in cleaner and colder air, but you'll also extend the life of your air conditioner.
Additional reading: Is It Ok to Spray Ac Unit with Water
Bi-Annually

Bi-annually, you should give your air conditioner some TLC. Clean the dust filter screens in the indoor unit of a split-system air conditioner, or as per the instructions for your ducted system. This is especially important if your air conditioner is always on, you live in a very dusty environment, or you experience a noticeable drop in performance.
If you have extra filters, like air purifying filters, be sure to clean them as per the instructions. Don't forget to wipe down the indoor unit or any ducts or vents with a soft damp cloth, both inside the unit (as far as you can safely reach) and the exterior.
Here's a quick rundown of what to do:
- Clean dust filter screens bi-annually
- Clean extra filters as per instructions
- Wipe down indoor unit, ducts, and vents with a soft damp cloth
Troubleshooting and Prevention
A dirty air conditioner can cause several issues that affect its performance and air quality in your home. It operates by circulating the air within your room, and if there are contaminants present, they can easily become dispersed and affect your health.
Reduced cooling efficiency is a clear sign that your air conditioner needs attention. Unusual noises, unpleasant odors, and increased energy bills are also red flags that indicate your air conditioner may require cleaning or AC repair.
Cleaning your air conditioner is a critical element of maintenance, which will keep your system healthier for longer. This translates to fewer big-ticket repairs and a lower energy bill.
Dirty Unit Performance Signs
Reduced cooling efficiency is a telltale sign of a dirty air conditioner.
Unusual noises from your air conditioner can indicate that it's struggling to perform its cooling duties.
Unpleasant odors wafting from your vents can be a sign that mold or mildew is growing inside your air conditioner.
Increased energy bills can be a sign that your air conditioner is working harder than it needs to, often due to a dirty unit.
These performance signs can lead to reduced efficiency, increased energy consumption, and potential damage to your HVAC system.
Consider reading: Dirty Aircon Filter
Mistakes to Avoid

Avoid turning off the power to your air conditioner while cleaning or performing maintenance tasks, as this can lead to electrical shocks and potential damage to the unit.
Always turn off the power to your air conditioner before cleaning or maintenance to prevent electrical shocks and damage.
Using harsh chemicals or the wrong type of cleaning solution can damage your air conditioner components.
Stick to a mild detergent mixed with water or a specialized cleaning solution designed for air conditioners to avoid damaging your air conditioner.
Additional reading: How to Turn off Aircon
DIY vs Professional
DIY air conditioner cleaning can be a cost-effective option for simple tasks, but some jobs require professional AC service to avoid costly mistakes down the line.
If you're unsure about your abilities or have a complex issue, it's best to consult a professional to avoid potential problems.
Professional cleaning is especially worth considering if you live in a very dusty or humid area, where dust and mould build-up inside the unit is a risk, and a maintenance service should include cleaning of internal components such as coils, fins, and drainage.
Some tasks, like cleaning internal components, are best left to professionals who have the right tools and expertise to do the job correctly.
For another approach, see: How to Service Air Con
A/C Maintenance Is Critical
A/C maintenance is critical, and it's not just about keeping your air conditioner running efficiently. Regular cleaning can help prevent issues like reduced cooling efficiency, unusual noises, and unpleasant odors.
Dirty air filters, dust buildup on the fins and coils, and debris in the drain pan are all physical signs of a dirty air conditioner. These issues can lead to reduced efficiency, increased energy consumption, and potential damage to your HVAC system.
Performance signs of a dirty air conditioner include reduced cooling efficiency, unusual noises, unpleasant odors, and increased energy bills. These issues indicate that your air conditioner may require cleaning or AC repair.
Cleaning your air conditioner is a critical element of maintenance, which will keep your system healthier for longer. This translates to fewer big-ticket repairs and a lower energy bill.
You can clean your air conditioner yourself, but it's recommended to get an official service technician to complete this process. If you're going to tackle some tasks yourself, make sure to use the right tools and materials, such as a mild detergent mixed with water or a specialized cleaning solution designed for air conditioners.
Additional reading: Dirty Coils on Ac Unit
Using harsh chemicals or the wrong type of cleaning solution can damage your air conditioner components. Stick to a mild detergent mixed with water or a specialized cleaning solution designed for air conditioners.
Your air conditioning system should be professionally serviced regularly, including checking the refrigerant gas levels, testing the thermostat, and ensuring all internals are in good condition. This will keep the unit running for many years.
Regular maintenance can also help prevent issues like mold growth and reduced air quality. By keeping your air conditioner clean and well-maintained, you can enjoy a healthier and more comfortable home.
Professional Servicing
Professional servicing is a must for your air conditioner to run efficiently and last long. Some manufacturers recommend servicing your air conditioner once a year.
You can have your air conditioner serviced by a professional, who will check the refrigerant gas levels, test the thermostat, and make sure all the internals are in good condition. Regular servicing will prevent faults from developing.
Suggestion: Aircon Servicing Contract
If you live in a very dusty or humid area, professional cleaning of internal components like coils, fins, and drainage is especially worth considering. This will prevent dust and mould build-up inside the unit.
Most people clean their air conditioner filters a few times each year, but only call for a service every few years or when the unit develops a fault. It's best to check your manual or call the manufacturer for their advice if you're unsure.
Frequently Asked Questions
What is the best thing to clean your AC unit with?
For a gentle and effective clean, use a solution of mild household detergent and water to clean your AC unit. This simple method is a great alternative to commercial coil cleaners.
Featured Images: pexels.com


