AO Aircon Services Singapore

14/08/2026

General service or chemical wash — they’re not the same.

General service
• Filters, drain, basic check
• Fine if the unit is still cold

Chemical wash
• Coils are clogged with dust + biofilm
• Airflow weak even after a filter clean
• Room takes forever to cool

Smell of mildew = coils, not “just the filter.”
We tell you which job you need before we start — no upsell on the doorstep.

BCA ME01 (L1)
WhatsApp 8151 8857
aot-ac.com

Reply AIRCON + smell / not cold / leaking.

14/08/2026

Aircon on. Room still warm. 15-second check.

1. Filters dusty?
2. Something blocking the blower?
3. Setpoint stuck at 27°C+?

Still not cold → filter, ice, gas or outdoor unit. We tell you service vs chemical wash vs repair before any work.

BCA ME01 (L1)
WhatsApp 8151 8857
Call 6816 2462
aot-ac.com

Reply AIRCON + how many units.

14/08/2026

❄️ Room still warm even though your aircon is "running"?

Before you book a full overhaul, check these 3 DIYs first — most cold-air problems start here:

1. 🧺 Dirty filter — clean/replace every 1–2 months
2. 📐 Airflow blocked — move items away from the blower
3. 🌡️ Temperature set too high — 24–25°C is the sweet spot

Still not cold after that? It could be low gas, a clogged coil, or a failing compressor.

🔧 We're BCA ME01 (L1) licensed for all brands: Daikin, Mitsubishi, Panasonic, Starmex, LG, Midea, Toshiba & more.

💬 WhatsApp "AIRCON" for a quick diagnosis: wa.me/6581518857

14/08/2026

Aircon running but the room still warm?

Usually one of these:
• dirty filters / weak airflow
• iced coil
• low gas / possible leak
• outdoor unit not keeping up
• unit due for chemical wash or overhaul

We diagnose first — then tell you general service vs chemical wash vs repair, with a written quote.

BCA ME01 (L1) Air-Conditioning & Refrigeration
HDB / condo / landed / commercial · islandwide

WhatsApp 8151 8857
Call 6816 2462
aot-ac.com

Reply AIRCON + how many units + symptom (not cold / leak / noise / smell).

General service from $25/unit. Chemical wash, repair and install for HDB, condo and commercial. BCA ME01 (L1).

13/08/2026

Aircon running but the room still warm?

Usually one of these:
• dirty filters / weak airflow
• iced coil
• low gas / possible leak
• outdoor unit not keeping up
• unit due for chemical wash or overhaul

We diagnose first — then tell you general service vs chemical wash vs repair with a clear quote.

📱 WhatsApp: +65 8151 8857
☎ Call: +65 6816 2462
🌐 aot-ac.com

BCA ME01 (L1) Air-Conditioning & Refrigeration
HDB / condo / landed / commercial · islandwide

Reply AIRCON + how many units + symptom (not cold / leak / noise / smell).

01/08/2026

When Should You Repair or Replace a Poorly Cooling Aircon?

An aircon that is running but not cooling properly does not always need immediate replacement. In many cases, servicing or component repair may restore its performance.

Consider repairing the aircon when:

✅ The filters or cooling coil are dirty
✅ The refrigerant level is low due to a minor leak
✅ The capacitor, sensor or thermostat is faulty
✅ The drainage system is blocked
✅ The fan motor or electrical component can be replaced
✅ The unit is still relatively new and in good condition

Replacement may be more practical when:

⚠️ The aircon is old and frequently breaking down
⚠️ The compressor has failed
⚠️ Major refrigerant leakage keeps recurring
⚠️ Spare parts are difficult or costly to obtain
⚠️ Electricity consumption has increased significantly
⚠️ Repair costs are close to the price of a new system

A professional inspection can identify the actual cause and help you decide whether repair or replacement offers better long-term value.

📞 Call: +65 6816 2462
📱 WhatsApp: +65 8151 8857
🌐 www.aot-ac.com

Alpha & Omega Trinity Pte Ltd
Your Trusted Air-Conditioning and Property Maintenance Specialist

27/07/2026

❄️ Your Copper Pipe Joint May Be Leaking Refrigerant

A leaking copper pipe joint in your air-conditioning system can slowly release refrigerant and reduce cooling performance.

Common warning signs include:

✅ Aircon is not cooling properly
✅ Ice forming on the copper pipe
✅ Oily stains around pipe joints
✅ Hissing sound near the connection
✅ Aircon running longer than usual
✅ Higher electricity consumption
✅ Frequent refrigerant top-up required

Refrigerant leakage is commonly caused by loose flare joints, damaged copper pipes, poor installation, corrosion or vibration from the aircon system.

Simply topping up the refrigerant will not solve the problem. The leaking joint must be located, repaired and pressure-tested before the correct refrigerant charge is restored.

Arrange a professional inspection early to prevent compressor damage and costly repairs.

📞 Call: +65 6816 2462
📱 WhatsApp: +65 8151 8857
🌐 www.aot-ac.com

Alpha & Omega Trinity Pte Ltd
Your Trusted Air-Conditioning and Property Maintenance Specialist

27/07/2026

❄️ Why Aircon Noise Becomes Louder at Night

Does your air conditioner seem much noisier after dark? The aircon may not actually be producing more noise—night-time surroundings are quieter, making developing faults much easier to hear.

Common causes include:

✅ Loose fan blades or fan motor
✅ Worn motor bearings
✅ Dirty or unbalanced blower wheel
✅ Loose mounting brackets or screws
✅ Vibrating refrigerant copper pipes
✅ Compressor starting to wear out
✅ Loose aircon casing or panels
✅ Foreign objects inside the outdoor unit

Warning signs include:

✅ Buzzing or humming sounds
✅ Rattling or vibrating noises
✅ Clicking during start-up or shutdown
✅ Squealing or screeching sounds
✅ Knocking or banging noises
✅ Noise becomes louder each week

Ignoring unusual aircon noises can lead to reduced cooling performance, higher electricity consumption and expensive component failures.

A professional inspection can identify the source of the noise before it develops into a major repair.

📞 Call: +65 6816 2462
📱 WhatsApp: +65 8151 8857
🌐 www.aot-ac.com

Alpha & Omega Trinity Pte Ltd
Your Trusted Air-Conditioning Maintenance Specialist