# Aircon Chemical Overhaul Jurong | Aircon Servicing Jurong > Aircon chemical overhaul in Jurong, S$130 to S$180 per unit. Unit dismantled and every part cleaned for heavy mould and sour smells. 90-day warranty. URL: https://airconservicingjurong.com/aircon-chemical-overhaul/ ![](/images/misc/dismantled-aircon-indoor-unit-parts-laid-out-on-ca.webp) Heavy Duty # Aircon Chemical Overhaul in Jurong: Taken Apart, Cleaned Right Last updated: 12 November 2026 Full dismantle-and-clean for heavy mould, strong smells or units not serviced for over a year. Fixed-price aircon servicing and repair for Jurong homes and shops. Price told first, no callout fee, 90-day warranty. - Fixed quote first - No callout fee - 90-day warranty - Open 7 days WhatsApp for a Quote [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20chemical%20overhaul%20in%20Jurong.%20Units%3A%20__%20Problem%3A%20__%20Address%3A%20__ →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20chemical%20overhaul%20in%20Jurong.%20Units%3A%20__%20Problem%3A%20__%20Address%3A%20__) Call 9427 3833 [tel:+6594273833 →](tel:+6594273833) Chemical Overhaul price S$130 to S$180 per unit Price varies with unit type, size and condition. You get a fixed quote before work starts. See pricing details [#pricing →](#pricing) - Since 2007 Cool Earth Aircon - 4,560+ Units serviced - 90-Day Workmanship warranty - 7 Days Open every week Does your aircon smell sour even after a wash? Or are you seeing black specks on the pillow? That usually means the dirt is sitting where a spray can’t reach. A **chemical overhaul** is the fix, and it’s what we do in a lot of Jurong West and Jurong East flats. Aircon Servicing Jurong is the Jurong team of Cool Earth Aircon, which Brian started in 2007. Here’s how an overhaul works, what it costs and when you need one. ## What is an aircon chemical overhaul? A chemical overhaul is the deepest clean we do on an indoor unit. We take the **fan coil unit** apart on the wall. The front **housing**, **drain pan**, **blower wheel** and **fan motor** all come out. We clean each part one by one and wash the **evaporator coil** in place. Then we apply an **anti-bacterial rinse** before everything goes back together. We finish with a **reassembly test run** and an airflow check. It takes longer than a wash too. Helpling, a Singapore home services platform, puts an overhaul at roughly 3 to 5 hours, against 1 to 2 hours for a wash. It costs S$130 to S$180 per unit, with a fixed quote before we open the unit. ## Why a wash is not always enough A chemical wash cleans the coil and blower with the unit still assembled. That works well for weak cooling and mild smells. But when a unit has gone years without a deep clean, the dirt changes. **Black mould** grows thick on the blower blades. The drain pan fills with **jelly sludge**, a slimy mix of dust, mould and bacteria. Spraying solution over that doesn’t remove it. The parts have to come out. Here’s a quick way to tell which one your unit needs: | | Chemical wash | Chemical overhaul | | --- | --- | --- | | Indoor unit | Stays assembled on the wall | Dismantled, parts cleaned one by one | | Best for | Weak cooling, mild smell, yearly upkeep | Heavy mould, sludge, strong smell, leaks | | Typical time | 1 to 2 hours | 3 to 5 hours | Coogle, another Singapore aircon company, suggests an overhaul for units that haven’t had a deep clean in 2 years or more. It also suggests one when a wash hasn’t solved the problem. That matches what we see on the ground. This is common in older flats in **Taman Jurong**, **Boon Lay** and the **resale flat** blocks around Jurong West Central. Those units have run every day for a decade or more, in Singapore’s humid climate. Mould loves it. ## Common problems an overhaul solves ### Strong sour smell A sour, vinegar-like smell usually means bacteria in the drain pan and on the blower. A musty smell is more often mould on the coil. Both are common in Singapore’s humidity. Removing and scrubbing the pan and blower is the fix. ### Black bits blowing out When mould on the blower dries and flakes, the fan throws it into the room. You may see black specks on the bed, pillow or wall below the unit. If you spot them, here’s what to do: - Stop using that unit for now, so it doesn’t spread more. - Take a photo of the specks and the blower, if you can see it. - Book an overhaul, because wiping the surface won’t stop the source. ### Water leaking from a dirty unit Sludge blocks the drain outlet, so the pan overflows. Cleaning the pan properly, then flushing the line, stops the leak at its source. If water still drips after that, the problem may sit in the pipe itself. We’ll tell you straight once we’ve checked. ### Severe loss of cooling A heavily fouled coil and blower move far less air. After an overhaul, most units cool noticeably faster. On older **R410A** units, we also check that the cooling problem isn’t a refrigerant issue before you pay for cleaning. A gas top-up is a different job. HomeJourney, a Singapore home services site, quotes S$80 to S$150 for R410A in 2026, and it won’t fix a dirty blower. ## What affects the overhaul price? The range is S$130 to S$180 per unit. For comparison, aircons.sg’s 2026 price guide puts chemical overhauls across Singapore at roughly S$120 to S$250 per unit. Three things push your price up or down: - **Unit size:** larger units sit towards the top of our range. - **Ease of dismantling:** tight installations take more time. - **Build-up:** very heavy mould and sludge mean more scrubbing. We confirm the exact price before we start. If a wash will do the job, we tell you and charge the wash price instead. Got 2 to 4 units at home? Tell us how each one smells and cools. Often only the worst unit needs an overhaul, and the others do fine with a wash. ## Keeping it clean afterwards An overhaul resets the unit. To keep it that way, book general aircon servicing [/ →](/) every 3 to 4 months and clean the filters yourself in between. Daikin Singapore recommends professional servicing every three months for daily use, so that’s a sensible rhythm for a bedroom unit. Our guide to cleaning aircon filters yourself vs booking a technician [/guide/clean-aircon-filter-yourself-vs-technician/ →](/guide/clean-aircon-filter-yourself-vs-technician/) shows what you can safely do at home. If leaks continue after an overhaul, the cause may be the pipe or drain line, which our aircon water leak repair [/aircon-water-leak-repair/ →](/aircon-water-leak-repair/) covers. Ready to get your **aircon chemical overhaul** done? Book with us, and we’ll give you a fixed quote before we open a single unit. Transparent Pricing ## How much does chemical overhaul cost in Jurong? Price varies with unit type, size and condition. You get a fixed quote before work starts. No callout fee anywhere in Jurong. ### Chemical wash From S$80 - Unit stays on the wall - Coil and blower washed with solution - For weak cooling and mild smells Get a fixed quote [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20chemical%20overhaul%20in%20Jurong.%20Units%3A%20__%20Problem%3A%20__%20Address%3A%20__ →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20chemical%20overhaul%20in%20Jurong.%20Units%3A%20__%20Problem%3A%20__%20Address%3A%20__) Most chosen ### Chemical overhaul S$130 to S$180 - Unit fully dismantled - Fan motor, blower, coil, drain pan and housing cleaned - Wear check on parts - Reassembly and test run Get a fixed quote [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20chemical%20overhaul%20in%20Jurong.%20Units%3A%20__%20Problem%3A%20__%20Address%3A%20__ →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20chemical%20overhaul%20in%20Jurong.%20Units%3A%20__%20Problem%3A%20__%20Address%3A%20__) General servicing for wall-mounted units starts at S$50 for 1 unit. See the full aircon servicing price list [/pricing/ →](/pricing/) . Why Jurong books us for chemical overhaul ## Why choose Aircon Servicing Jurong for chemical overhaul? Straight prices, plain explanations and work that is covered for 90 days. ### Every part cleaned, not just sprayed The blower wheel, fan motor, drain pan and housing come out and are cleaned one by one. That is how the sludge and black mould actually leave. ### Wear check while it is open With the unit apart, we check the fan motor and blower for wear and tell you if anything looks close to failing. ### Clear price range S$130 to S$180 per unit, confirmed before the unit is opened. No surprise charges mid-job. ### Experienced with older units We overhaul units in older Taman Jurong, Boon Lay and Jurong West resale blocks every week. ### Mess contained Sheets down, parts cleaned in a contained area, floor wiped before we leave. ### 90-day warranty If the same fault comes back within 90 days, we return and fix it at no extra charge. How It Works ## How does our chemical overhaul work? A chemical overhaul usually takes about 1.5 to 2 hours per unit. Plan for a longer visit if several units need it. 1. 1 ### Photo and quote Send a photo of the blower or the smell symptoms. We confirm it is an overhaul job and quote the price. 2. 2 ### Protect the room Bed, floor and furniture covered. Power to the unit switched off. 3. 3 ### Dismantle Housing, drain pan, blower wheel and fan motor removed from the fan coil unit. 4. 4 ### Clean part by part Each part washed, the coil cleaned on the wall, and an anti-bacterial rinse applied. Parts checked for wear. 5. 5 ### Reassemble and test Unit put back together, test run, airflow checked, area cleaned. Pay after. ## Not sure if it needs servicing, a wash or a repair? Send a photo or short video of the unit on WhatsApp. We will tell you what job fits and the fixed price before anyone comes over. WhatsApp for a Quote [https://wa.me/6594273833 →](https://wa.me/6594273833) 9427 3833 [tel:+6594273833 →](tel:+6594273833) Our Work ## Chemical Overhaul jobs around Jurong A look at the kind of work this job involves. Tap any photo to see it larger. ![](data:image/gif;base64,R0lGODlhAQABAAAAACw=) What Customers Say ## What customers say about our chemical overhaul Cool Earth Aircon holds a 4.0 Google rating from 66 reviews. Here is what customers tell us after a job. > "Our 12-year-old bedroom unit smelt sour. They did an overhaul and showed me the sludge from the drain pan. Smell gone." AH Ah Hock T. Taman Jurong > "Our 3-room flat in Boon Lay had aircon that smelt awful every time we switched it on. Overhaul on all three units and the cooling is noticeably stronger. Price matched the WhatsApp quote." WL Wei Lin Boon Lay > "Black bits were blowing out onto the bed. The technician took the whole thing apart, cleaned it and put it back in about two hours." RB Rosnah B. Jurong West Central Got Questions? ## Chemical Overhaul questions from Jurong customers ### How much is an aircon chemical overhaul in Jurong? S$130 to S$180 per unit, depending on unit type, size and condition. You get a fixed quote before the unit is opened, and there is no callout fee. ### When do I need an overhaul instead of a chemical wash? Choose an overhaul for a strong sour smell, black mould blowing out, jelly-like sludge in the drain pan, or a unit over 5 years old that has never been deep cleaned. A wash suits weak cooling and mild smells. ### How long does a chemical overhaul take? Usually about 1.5 to 2 hours per unit, depending on how dirty it is and how easy it is to take apart. ### Is the outdoor unit included? The overhaul covers the indoor fan coil unit. We still check the outdoor unit on the ledge for obvious problems and tell you if it needs attention. ### Will my aircon be taken away? No. The unit is dismantled and cleaned in your home, then put back on the same day. ### Can you overhaul inverter and multi-split units? Yes. We overhaul inverter and non-inverter units of all common brands, including fan coils on System 2, 3 and 4 set-ups using R410A or R32. ### How do I stop the mould coming back? Keep up general servicing every 3 to 4 months, clean the filters every few weeks, and run the fan for a few minutes after switching off cooling so the coil can dry. ### Is there a warranty on the overhaul? Yes. Every job has a 90-day workmanship warranty. If the same fault returns within 90 days, we come back and fix it at no extra charge. ### Should I replace my old unit instead? If a unit is very old and parts are failing, we will tell you honestly. Replacement and installation are handled by our parent company, Cool Earth Aircon, at coolearth.com.sg. ### Still have a question? Send us a photo of your unit on WhatsApp. We reply with a fixed quote. WhatsApp for a Quote [https://wa.me/6594273833 →](https://wa.me/6594273833) Helpful Guides ## Read before you book Guide ### 7 Signs Your Aircon Is Overdue for Servicing Weak airflow, dusty filters, slow cooling and a musty smell are early warnings. Check the 7 signs and which ones point to a wash or repair. [7 Signs Your Aircon Is Overdue for Servicing →](/guide/signs-aircon-overdue-for-servicing/) Guide ### Cleaning Aircon Filters Yourself vs Booking a Technician What you can safely clean at home, what needs a technician (coil, drain line, gas, wiring) and why spray cleaners can cause leaks. [Cleaning Aircon Filters Yourself vs Booking a Technician →](/guide/clean-aircon-filter-yourself-vs-technician/) Related Services ## Other jobs that often go with this ![Technician applying chemical cleaning solution to the coil of a wall-mounted aircon in a Jurong HDB bedroom](/images/misc/technician-on-ladder-applying-chemical-cleaning-so.webp) Deep Clean ### Aircon Chemical Wash On-wall deep clean of the coil, blower wheel and drain parts for weak cooling and mild smells. From S$80 [Aircon Chemical Wash →](/aircon-chemical-wash/) ![Water dripping from a wall aircon onto a towel in an older Taman Jurong HDB bedroom](/images/misc/water-dripping-from-wall-mounted-aircon-onto-towel.webp) Repair ### Aircon Water Leak Repair Clears choked drain lines and fixes drain pan and pipe faults that cause dripping. From S$60 [Aircon Water Leak Repair →](/aircon-water-leak-repair/) ![Technician cleaning an aircon filter during a quarterly maintenance visit in a Jurong condo](/images/misc/technician-cleaning-aircon-filter-in-bright-jurong.webp) Save More ### Annual Aircon Maintenance Contract Four servicing visits a year with priority booking, at a lower total price than four single visits. From S$200 / year [Annual Aircon Maintenance Contract →](/maintenance-contract/) ![](/images/misc/aircon-technician-packing-tools-into-bag-after-fin.webp) Same-day slots in Jurong, subject to availability ## Ready to book chemical overhaul in Jurong? Tell us the unit count and the problem on WhatsApp. Chemical Overhaul is s$130 to s$180, with a fixed quote before we start. WhatsApp for a Quote [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20chemical%20overhaul%20in%20Jurong.%20Units%3A%20__%20Problem%3A%20__%20Address%3A%20__ →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20chemical%20overhaul%20in%20Jurong.%20Units%3A%20__%20Problem%3A%20__%20Address%3A%20__) Call 9427 3833 [tel:+6594273833 →](tel:+6594273833) - Fixed quote before work - No callout fee - 90-day workmanship warranty