# Aircond Chemical Overhaul KL | Masterz Aircond Hq > Full aircond chemical overhaul in Kuala Lumpur — complete dismantle to flush mould, slime & odour from coils and blower. Restore cooling and fresh air. 4.9★. URL: https://klaircondservice.my/aircond-chemical-overhaul/ ![Aircond chemical overhaul with the indoor unit fully dismantled for deep cleaning](/images/misc/aircond-chemical-overhaul-with-dismantled-indoor-u.webp) # Deep Chemical Overhaul for Clogged, Smelly Aircond Units A full dismantle deep-clean that flushes mould, slime, and odour from components a spray wash can't reach. WhatsApp Us Now [https://wa.me/60143029055 →](https://wa.me/60143029055) Call +60 14-302 9055 [tel:+60143029055 →](tel:+60143029055) 4.9★ 115+ Google reviews ~2 hours Typical job time Same-Day Service Across Klang Valley Cleanup Guaranteed after every job Signs You Need This ## Common Problems Our Chemical Overhaul Fixes If your aircon is showing any of these symptoms, we can usually sort it the same day. ### Persistent musty or mouldy smell 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. ### Water leaking even after the drain was cleared A clogged tray or cracked tray housing can cause persistent leaks that only a full dismantle will reveal and fix. ### Weak cooling despite recent servicing If the coil is badly fouled, surface cleaning won't restore performance. A full soak and flush is needed. ### Black slime visible inside the unit Biological buildup inside the blower and coil affects air quality and cooling. An overhaul removes it at the source. Last updated: 11 June 2026 ## What Our Chemical Overhaul Service Covers 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. ![Indoor unit dismantled for chemical overhaul](/images/features/aircond-indoor-unit-being-dismantled-from-wall-for.webp) 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. ## Why Your Unit Needs an Aircond Chemical Overhaul 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. | ### Restoring Cooling Power and Indoor Air Quality 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. ## What's included - ✓ Complete dismantle of the indoor unit - ✓ Deep soak & flush of coil, blower & water tray - ✓ Removes mould, slime, and persistent odour - ✓ Restores cooling power and air quality - ✓ Reassembly, testing & full cleanup included Gallery ## Recent Work A look at the kind of clean, neat work we do across the Klang Valley. ![Indoor unit dismantled for chemical overhaul](/images/features/aircond-indoor-unit-being-dismantled-from-wall-for.webp)![Evaporator coil soaking in chemical solution](/images/features/evaporator-coil-soaking-in-chemical-solution-to-re.webp)![Blower wheel before and after chemical overhaul](/images/features/blower-wheel-before-and-after-chemical-overhaul-sh.webp)![Aircond unit reassembled after chemical overhaul](/images/features/reassembled-aircond-unit-after-overhaul-with-fresh.webp)![Water tray cleaning during chemical overhaul](/images/features/aircond-water-tray-being-deep-cleaned-during-full-.webp) How We Work ## How Our Chemical Overhaul Service Works Same simple, transparent flow on every visit. 1 ### Confirm the unit needs an overhaul Foul smell, persistent leak, black slime, or weak cooling after a wash — those are the signals. 2 ### Dismantle & protect We remove the indoor unit safely, with protective sheets down and electrical isolation in place. 3 ### Soak, flush, sanitise Coil, blower wheel, and water tray get a deep soak, high-pressure flush, and antibacterial finish. 4 ### Reassemble & test We rebuild, vacuum-test, and confirm cooling. Cleanup is included — your floor and walls stay clean. Same-day response across the Klang Valley ## Ready to Book? Get a Transparent Quote Tell us your unit and the issue. We quote before starting any work. WhatsApp Us Now [https://wa.me/60143029055 →](https://wa.me/60143029055) Call +60 14-302 9055 [tel:+60143029055 →](tel:+60143029055) Why Customers Pick Us ## Why Choose Us for Chemical Overhaul ### Goes where a wash can't Spraying a mounted unit misses the blower wheel interior and tray underside. A full dismantle reaches everything. ### Restores fresh air Mould and slime in the blower cause that classic musty aircon smell. An overhaul removes it at the source. ### Honest recommendation If a basic wash will do, we'll say so. We only recommend an overhaul when your unit actually needs it. Real Reviews ## What KL Customers Say About Us 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." Noorul Hasninlayali via Google > "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." Vilnius via Google > "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." Azrul Hasani via Google > "Workmanship superb especially Mr Wan! He can manage within 2 hours for installation! No regrets! Price so affordable!!" Soffi Ibrahim via Google > "Fast response and service. Very polite. Good quality installation and service." Ridhzuan Rahman via Google > "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." Acit Black via Google FAQ ## Aircond Chemical Overhaul FAQs How is a chemical overhaul different from a chemical wash? + A wash sprays cleaning solution onto a mounted unit. An overhaul fully dismantles the indoor unit so the coil, blower, and water tray can be soaked and flushed. It's deeper, takes longer, and costs more — but it's what your unit needs when a wash doesn't fix the smell or leak. How often should I do a chemical overhaul? + Only when symptoms appear: persistent musty smell, black slime, recurring water leaks, or weak cooling that doesn't improve after a basic wash. Most homes only need it every few years. Will an overhaul fix my aircon's smell? + Almost always, yes. Mouldy smell comes from biological buildup in the blower wheel and water tray — exactly the components an overhaul deep-cleans. How long does an overhaul take per unit? + Plan for around 2-3 hours per unit because of the full dismantle and reassembly. We confirm scheduling when you book. How often does an aircond actually need a chemical overhaul? + Most units only need a full overhaul every few years, and only when symptoms appear — persistent odour, leaks, or weak cooling after a wash. Regular servicing and the occasional chemical wash keep overhauls to a minimum. Helpful Guides ## Chemical Overhaul Guides Plain-English answers from the team that does the work. ### Signs Your Aircond Needs a Full Chemical Overhaul (Mold, Slime, Odour) Foul smell, black slime, persistent leaks, or weak airflow? These are signs your aircond needs a full chemical overhaul, not just a wash. [Signs Your Aircond Needs a Full Chemical Overhaul (Mold, Slime, Odour) →](/guide/signs-aircond-needs-chemical-overhaul/) ### Chemical Wash vs Chemical Overhaul: Which Does Your Unit Need? 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. [Chemical Wash vs Chemical Overhaul: Which Does Your Unit Need? →](/guide/chemical-wash-vs-chemical-overhaul/) Related Services ## Other Services You Might Need ![Aircond Servicing & Cleaning](/images/misc/professional-technician-in-blue-uniform-servicing-.webp) ### Aircond Servicing & Cleaning Routine servicing and cleaning that restores cooling power, improves air quality, and keeps your unit running efficiently. [Aircond Servicing & Cleaning →](/aircond-servicing-cleaning/) ![Aircond Repair & Diagnostics](/images/misc/aircond-technician-diagnosing-wall-unit-with-manif.webp) ### Aircond Repair & Diagnostics Fast, transparent diagnosis and repair for cooling faults, strange noises, electrical trips, and leaks. [Aircond Repair & Diagnostics →](/aircond-repair/) ![Commercial Aircon Services](/images/misc/ceiling-cassette-aircond-unit-being-serviced-in-mo.webp) ### Commercial Aircon Services Installation and maintenance for offices, cafés, retail, and shop-lots, including cassette, ducted, and VRV/VRF systems. [Commercial Aircon Services →](/commercial-aircon/) ![](/images/cta/aircond-technician-in-blue-uniform-servicing-wall-.webp) ## Ready for clean, fast aircond service? WhatsApp our Setapak-based team for a same-day visit. We arrive on time, explain the work, and leave your home spotless. WhatsApp Us Now [https://wa.me/60143029055 →](https://wa.me/60143029055) Call +60 14-302 9055 [tel:+60143029055 →](tel:+60143029055) Same-day response · Open daily 8am–6pm · Klang Valley coverage