A full dismantle deep-clean that flushes mould, slime, and odour from components a spray wash can't reach.
If your aircon is showing any of these symptoms, we can usually sort it the same day.
If the smell returns after a basic service, mould is deep inside the blower wheel or water tray where a spray wash can't reach.
A clogged tray or cracked tray housing can cause persistent leaks that only a full dismantle will reveal and fix.
If the coil is badly fouled, surface cleaning won't restore performance. A full soak and flush is needed.
Biological buildup inside the blower and coil affects air quality and cooling. An overhaul removes it at the source.
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A chemical overhaul is our deepest clean. Unlike a basic chemical wash that sprays a mounted unit, an overhaul fully dismantles the indoor unit so we can soak and flush the evaporator coil, blower wheel, and water tray — removing stubborn mould, black slime, and foul odours.
We know exactly how frustrating it is when your aircond still smells musty after a service, or leaks despite a clear drainage line. A sudden drop in cooling power is another clear sign that your unit needs a serious intervention.
The solution to these stubborn issues is a complete Aircond Chemical Overhaul.
Our professional service team will fully dismantle the indoor unit so the coil, blower, and water tray can be properly soaked and flushed. A basic chemical wash just sprays a mounted unit, which handles routine grime but leaves deep dirt untouched.
That simple spray method cannot reach the inside of the blower wheel or the underside of the water tray.
Our experience across Kuala Lumpur shows that skipping a full dismantle leads to recurring cooling problems. The tropical humidity in Malaysia creates the perfect breeding ground for a thick, slimy substance known as aircon jelly.
This sticky biofilm of bacteria and dust easily clogs your drainage system and causes unexpected indoor water leaks. We use a complete overhaul to eliminate this jelly, because standard surface cleaning leaves the hidden mould completely intact. A recent Universiti Kebangsaan Malaysia (UKM) research study actually found that 83.2% of Malaysian homes have mould.
This persistent biological buildup directly impacts several key parts of your system. We created this quick breakdown to show exactly where the hidden grime gathers inside your unit:
| Internal Part | Hidden Problem | The Result |
|---|---|---|
| Evaporator Coil | Dust and moisture form a thick blanket. | Blocks cold air from escaping. |
| Blower Wheel | Mould spores stick to the rotating fan blades. | Reduces airflow and spreads odours. |
| Water Tray | Stagnant condensation breeds thick jelly. | Clogs the pipe and causes wall leaks. |
The Department of Occupational Safety and Health (DOSH) strictly regulates indoor air guidelines because contaminated filters trigger severe respiratory allergies. Removing the dense grime directly restores your cooling power and drastically improves your Indoor Air Quality.
Our deep cleaning process strips the unit down completely, allowing us to scrub away every trace of that harmful biofilm.
A spotless evaporator coil actually reduces energy consumption by 5% to 15%, according to standard efficiency benchmarks.
You get to enjoy freezing cold air again while keeping your monthly TNB bills much lower. We always reassemble, test, and wipe down the entire system so your Aircond Chemical Overhaul leaves the unit performing exactly like new.
A quick message to our team is all it takes to book your session today. Your space deserves to feel perfectly chilled and fresh again.
A look at the kind of clean, neat work we do across the Klang Valley.
Same simple, transparent flow on every visit.
Foul smell, persistent leak, black slime, or weak cooling after a wash — those are the signals.
We remove the indoor unit safely, with protective sheets down and electrical isolation in place.
Coil, blower wheel, and water tray get a deep soak, high-pressure flush, and antibacterial finish.
We rebuild, vacuum-test, and confirm cooling. Cleanup is included — your floor and walls stay clean.
Same-day response across the Klang Valley
Tell us your unit and the issue. We quote before starting any work.
Spraying a mounted unit misses the blower wheel interior and tray underside. A full dismantle reaches everything.
Mould and slime in the blower cause that classic musty aircon smell. An overhaul removes it at the source.
If a basic wash will do, we'll say so. We only recommend an overhaul when your unit actually needs it.
Rated 4.9★ across 115+ Google reviews — these are real customer words.
"Good workmanship. The technician communicates very well with you in both English and Bahasa. You're welcome to inquire about the installation, the unit and maintenance. Quick work as well, just under two hours. And they're very punctual."
"Easy to deal with, patiently answer noob questions from me, follow up whereabouts of their technician, quality wise and workmanship with me. No reason to doubt them."
"Good service provided. Reasonable price. Fast response, will inform early if there's any issue on installation appointment or stock availability. Friendly staff will arrange from choosing AC brand till finish installation."
"Workmanship superb especially Mr Wan! He can manage within 2 hours for installation! No regrets! Price so affordable!!"
"Fast response and service. Very polite. Good quality installation and service."
"Good and fast service. Terbaik Masterz Aircond! Customer-friendly staff — ask whatever questions and they are answered. Overall best and satisfied with the service offered, thanks."
Plain-English answers from the team that does the work.
Foul smell, black slime, persistent leaks, or weak airflow? These are signs your aircond needs a full chemical overhaul, not just a wash.
Chemical wash or chemical overhaul? We compare the process, depth, cost, and time of each — and how to choose the right one for your aircond's condition.
Routine servicing and cleaning that restores cooling power, improves air quality, and keeps your unit running efficiently.
Fast, transparent diagnosis and repair for cooling faults, strange noises, electrical trips, and leaks.
Installation and maintenance for offices, cafés, retail, and shop-lots, including cassette, ducted, and VRV/VRF systems.
WhatsApp our Setapak-based team for a same-day visit. We arrive on time, explain the work, and leave your home spotless.
Same-day response · Open daily 8am–6pm · Klang Valley coverage
