AC not cooling is a major problem nowadays. It was a Tuesday morning in Jurong West. The heat index was pushing 34°C, and the humidity felt like a warm, damp blanket that refused to leave your skin.
My phone buzzed.
On the line was Mr. Tan, a longtime resident of Jurong who sounded a little desperate.
“Hi, my aircon has been running all night, but it’s still warm in my room. I’ve set it to 18°C, but it feels like 28°C. Can you come today?”
In Singapore, when an AC not cooling, it can turn your home into a sauna within hours. I could hear a faint humming in the background—the compressor was working hard, but the cool air just wasn’t coming.
I assured Mr. Tan,
“Don’t worry, I’ll be there in less than an hour. It sounds like your unit needs a proper aircon chemical wash.”
Step 1 – Diagnosis: Why the AC Not Cooling
When I arrived at his HDB flat in Jurong, the first thing I noticed was condensation dripping excessively from the indoor unit. That’s a big sign that something isn’t right inside.
I ran a quick temperature output test. The air blowing from the unit was a lukewarm 26°C—far from the icy 18°C Mr. Tan wanted.
Here’s what I found during the inspection:
- Thick Dust and Dirt on the Evaporator Coil – The coil was caked with a layer of dirt and grease, acting like an insulating blanket. Cold air couldn’t pass through properly.
- Clogged Drainage System – Algae buildup was blocking the drainpipe, causing water to back up.
- Weak Airflow – The fan blower was covered in sticky dust, slowing it down.
This was a classic case where normal servicing wouldn’t help. It needed a deep clean — and that meant an aircon chemical wash.
Step 2 – Explaining the Solution to the Client
I believe in full transparency, so I showed Mr. Tan exactly what I found. I used a small inspection camera to give him a live view of the grime inside his unit.
He was shocked.
“Wah… I didn’t know it was that dirty inside. No wonder it’s not cooling.”
I explained,
“A chemical wash will break down and flush out all that dirt, bacteria, and algae. It will restore your cooling, improve airflow, and even help you save on your electricity bill.”
He gave me the go-ahead immediately.
Step 3 – Performing the Aircon Chemical Wash in Jurong
1. Power Down & Disassemble
First, I cut off the power supply for safety. I then carefully removed the casing, filters, and fan blower.
2. Protecting the Surroundings
Since this was in his living room, I covered the furniture and floor with waterproof sheets to ensure no chemical water would splash onto his belongings.
3. Applying the Chemical Solution
Using an eco-friendly, non-toxic chemical solution approved for Singapore households, I coated the evaporator coil, blower wheel, and drain pan. The solution foamed up instantly, breaking down years of stubborn grime.
4. High-Pressure Rinse
I then flushed the system with a high-pressure water jet, ensuring every trace of dirt and chemical was removed.
5. Clearing the Drainage
The drainpipe was flushed with a special anti-bacterial solution to prevent future algae growth.
The Immediate Results
The moment I switched the unit back on, the difference was like night and day.
- Before: 26°C output, weak airflow, humid room.
- After: 17.5°C output, strong icy airflow, humidity gone.
Mr. Tan stood in front of the AC and smiled.
“Wah, this feels new! It’s colder than I remember.”
I could see the relief on his face. The aircon chemical wash had completely restored cooling performance.
Why a Chemical Wash Made the Difference
Most people in Singapore do general aircon servicing once every few months, which is fine for light maintenance. But when your AC is not cooling, it’s often because dirt has built up deep inside the system.
A chemical wash:
- Deep cleans internal components beyond what normal servicing can reach.
- Restores full cooling capacity.
- Improves airflow.
- Removes bacteria and mold that cause odors.
- Reduces energy consumption—saving you money in the long run.
Preventing the Problem in the Future
I advised Mr. Tan to schedule a chemical wash every 12–18 months, depending on usage. In Singapore’s climate, where air conditioners run almost daily, dust and humidity combine to form stubborn dirt quickly.
I also shared some quick tips:
- Clean your filters monthly—it takes less than 5 minutes.
- Don’t set your AC to “Fan” mode for cooling—always use “Cool” mode to avoid strain.
- Use a dehumidifier occasionally to reduce moisture buildup.
- Book regular servicing—prevention is always cheaper than repair.
Final Thoughts from This Jurong Case Study
This case was a perfect example of how an AC not cooling in Singapore can be fixed quickly and effectively with the right approach.
Mr. Tan went from sleepless, sweaty nights to cool, comfortable evenings—all in less than 3 hours. And the best part? He didn’t need to replace his unit; it just needed proper cleaning.
If your aircon isn’t cooling, don’t wait until it breaks down completely. A professional aircon chemical wash could save you time, money, and a lot of discomfort.