Did you know that the evaporator coil is one of the most important parts of an air conditioner?
When it gets dirty, the unit loses efficiency, consumes more energy, and can even cause bad odors and respiratory problems.
The good news is that you can safely clean it at home, as long as you follow the correct steps. Let's go!
⚠️ Caution before starting
Before anything else, safety first:
🔌 Unplug the air conditioner
⚡ If possible, also turn off the circuit breaker
🧤 Use gloves and a mask, as there may be accumulated dust, fungi, and mold
These precautions prevent accidents and protect your health.
🧰 Materials you will need
✔️ Soft-bristled brush or paintbrush
✔️ Clean, dry cloths
✔️ Air conditioner-specific cleaning spray
✔️ 70% alcohol (optional, for light disinfection)
All these items are easy to find and make all the difference in the result.
🛠️ Step-by-step to clean the evaporator coil
1️⃣ Open the front panel
Lift or unclip the front cover of the split air conditioner.
In most models, it comes off easily.
2️⃣ Remove the air filters
Remove the filters and wash them with running water and neutral soap.
Then, let them dry in the shade before replacing them.
3️⃣ Locate the evaporator coil
With the filters removed, you will see the evaporator coil — that metal grid with very thin fins.
4️⃣ Remove surface dust
Use the brush very carefully, lightly passing it over the fins.
⚠️ Do not force! They are delicate and can bend.
5️⃣ Apply the cleaning spray
Spray the product evenly throughout the coil.
Respect the action time indicated on the label, usually between 10 and 20 minutes.
📌 The product dissolves internal dirt and helps eliminate fungi and bacteria.
6️⃣ Remove excess
With a dry, soft cloth, remove only the visible excess dirt.
Avoid splashing water or excessively wetting the equipment.
7️⃣ Reassemble everything
After cleaning, replace the dry filters and carefully close the front panel.
🕒 How often should this cleaning be done?
🏠 In homes: every 4 to 6 months
🌫️ In dusty or heavily used areas: more frequently
Regular maintenance prevents major problems.
👨🔧 When to call a technician?
If the coil has:
❌ Excessive mold
❌ Heavy dirt
❌ Strong, persistent odor
Ideally, call a specialized technician who will perform a deep chemical cleaning with proper disassembly.
✅ Conclusion
Keeping the evaporator coil clean:
✔️ Improves air conditioner performance
✔️ Reduces energy consumption
✔️ Prevents bad odors and respiratory problems
✔️ Increases the equipment's lifespan
With simple and regular care, you ensure greater comfort, savings, and health at home.
