# Aircon Chemical Overhaul Jurong | Aircon Servicing Jurong > Aircon chemical overhaul in Jurong, S$130 to S$180 per unit. Unit dismantled, every part cleaned and checked for wear. Fixed quote first, 90-day warranty. URL: https://airconservicingjurong.com/aircon-chemical-overhaul/ Deepest clean # Aircon Chemical Overhaul for Older and Heavily Soiled Units in Jurong Last updated: 12 November 2026 The indoor unit is taken apart and every part cleaned and checked. For heavy mould, strong smells or units not serviced for over a year. Fixed-price aircon servicing for Jurong homes and shops: no callout fee, a published price list and a 90-day workmanship warranty. - Fixed quote first - No callout fee - 90-day warranty - Open 7 days WhatsApp for a Fixed Quote [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20chemical%20overhaul%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__ →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20chemical%20overhaul%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__) View Pricing [#pricing →](#pricing) Or call +65 9427 3833 [tel:+6594273833 →](tel:+6594273833) . Same-day slots, subject to availability. ![Technician dismantling a fan coil unit for a chemical overhaul in a Taman Jurong flat](/images/misc/technician-lifting-the-dismantled-fan-coil-unit-of.webp) S$130 to S$180 per unit 2007 Serving Singapore since 4,560+ Units serviced 90-Day Workmanship warranty 4.0/5 66 Google reviews Rating from Google (Cool Earth Aircon profile). Fixed quote before work, no callout fee, open 7 days. The service ## What Is Aircon Chemical Overhaul? A chemical overhaul is the deepest clean we do. The indoor unit is taken apart; the fan motor, blower wheel, coil, drain pan and housing are cleaned one by one, checked for wear and put back. It is the right job for strong sour smells, black mould blowing out, jelly-like sludge in the drain pan, or units older than five years with no deep clean. We see this often in older Jurong flats such as Taman Jurong, Boon Lay and Yuhua. Price is S$130 to S$180 per unit depending on unit type and condition, confirmed before work starts. ### What's included - Full dismantle of the fan coil unit - Fan motor, blower wheel, coil, drain pan and housing cleaned part by part - Wear check on each part before reassembly - PCB isolated before cleaning; full test run after - 90-day workmanship warranty ![Blower wheel, drain pan and housing laid out for cleaning during an overhaul](/images/content/aircon-parts-laid-out-on-a-plastic-sheet-blower-wh.webp) ## When Is a Chemical Overhaul the Right Job? Ever had an aircon that smells worse the longer it runs? Sometimes washing on the wall just isn’t enough. You can usually tell by the smell. A strong sour odour every time the aircon starts, black specks blowing out of the vents, or a unit that drips no matter how often the drain is flushed all point to heavy build-up inside the **fan coil unit**. In those cases the dirt is packed deep into the **blower wheel**, the back of the **evaporator coil** and the **drain pan**. A chemical wash can’t reach all of it with the unit assembled. An **aircon chemical overhaul** takes the unit apart so we can clean every surface by hand. We see this most in older Jurong estates, and Brian’s team at Cool Earth Aircon has been opening up these units since 2007. Many **resale flats** in Taman Jurong, Boon Lay and Yuhua have units that have run for years with only filter washes. Some still run on **R22 refrigerant**, an older gas that is being phased out under the Montreal Protocol, so a unit that old deserves a proper look inside. ## What Happens During a Chemical Overhaul? Here’s how a typical visit goes. Industry guides in Singapore, such as the one from Helpling, put an overhaul at roughly 3 to 5 hours per unit, so a flat with 2 to 4 wall-mounted units can take a good part of the day. 1. **Check and quote.** The technician looks at the unit, explains what they see and confirms the price. 2. **PCB isolation.** Power is switched off and the **PCB control board** is removed or sealed off so no liquid can reach it. 3. **Dismantle.** The front panel, filters, drain pan, swing louvres, **housing** and blower wheel come off. 4. **Clean part by part.** Each part is washed with cleaning solution and rinsed. The coil is treated on the wall with a wash bag fitted. 5. **Wear check.** The **fan motor**, bearings and drain pan are checked for cracks, play or noise while they are out. 6. **Reassemble and test.** The unit goes back together, the drain is flow-tested and the unit runs until it reaches proper cooling. You’ll see exactly what came out of your unit. Most people don’t forget the first time they see **jelly sludge** from a drain pan. ## Signs Your Unit Needs an Overhaul ### Black mould blowing out See dark specks on the louvres or the wall below the unit? **Black mould** has colonised the blower wheel. It needs to come out and be scrubbed. ### Strong sour smell A mild musty smell can be washed out. A sharp sour smell that fills the room usually means heavy mould deep in the unit. ### Water leaks that keep coming back Sludge in the drain pan blocks water flow and overflows. An overhaul clears it properly instead of pushing it further down the line. This matters beyond wet floors. NEA’s public messaging points out that Aedes mosquitoes breed in clean, stagnant water, and a choked drain line can leave exactly that behind. ### Severe loss of cooling on an older unit When a unit over five years old has never had a deep clean, an overhaul is usually the first step before any talk of gas or parts. Dirt on the coil and blower can mimic a gas problem. Clean first, then decide. ## Chemical Wash vs Chemical Overhaul | | Chemical wash | Chemical overhaul | | --- | --- | --- | | Unit dismantled | No, stays on the wall | Yes, part by part | | Best for | Weak cooling, mild smells | Heavy mould, sour smell, sludge | | Price per unit | From S$80 | S$130 to S$180 | | Wear check on parts | Visual only | Each part checked | Not sure which your unit needs? Read about our chemical wash [/aircon-chemical-wash/ →](/aircon-chemical-wash/) or send us a photo. We won’t sell you an overhaul if a wash will do. ## After the Overhaul Keep the result fresh by washing filters every few weeks and booking general aircon servicing in Jurong [/ →](/) every 3 to 4 months. Our guide on how often to service your aircon [/guide/how-often-to-service-aircon/ →](/guide/how-often-to-service-aircon/) explains why the interval matters in Jurong’s humid climate. If the overhaul shows a part is wearing out, we can quote an aircon repair [/aircon-repair/ →](/aircon-repair/) on the spot. Send us a photo of your unit today, and we’ll tell you honestly whether it needs an aircon chemical overhaul or just a wash. Transparent pricing ## How Much Does Chemical Overhaul Cost in Jurong? Depends on unit type and condition. Fixed quote before work starts. ### No callout fee The technician checks the unit and confirms the work and price before starting. If you decide not to go ahead, you do not pay for the visit. Chemical Overhaul Price S$130 to S$180 per unit - Full dismantle of the fan coil unit - Fan motor, blower wheel, coil, drain pan and housing cleaned part by part - Wear check on each part before reassembly Get My Fixed Quote [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20chemical%20overhaul%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__ →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20chemical%20overhaul%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__) ### 90-day warranty If the same fault comes back within 90 days, we return and fix it at no extra charge. Payment is made after the job is done. See every published price on our aircon servicing price list [/pricing/ →](/pricing/) . Why choose us ## Why Choose Aircon Servicing Jurong for Chemical Overhaul? ### Parts checked, not just cleaned Each part gets a wear check while it is out. If the fan motor or a bearing is failing, you hear about it before reassembly. ### Clear price range S$130 to S$180 per unit, confirmed before work. No callout fee and no surprise add-ons. ### Used to older units Older units in Taman Jurong, Boon Lay and Yuhua are common overhaul jobs for us, including R22 systems. ### Electronics kept safe The PCB is isolated before any cleaning starts, so water and solution never reach it. ### Honest advice on old units If a unit is near the end of its life, we tell you. Replacement is handled by Cool Earth Aircon. ### 90-day warranty If the same fault returns within 90 days, we come back and fix it at no extra charge. ## Not sure what your aircon needs? Describe the problem on WhatsApp. We will tell you if it is servicing, a chemical wash or a repair, and what it costs. WhatsApp Us [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20servicing%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__ →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20servicing%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__) +65 9427 3833 [tel:+6594273833 →](tel:+6594273833) The process ## How Does Our Chemical Overhaul Work? 1. 01 ### Photo and quote Send a photo of the unit and the problem. We confirm whether an overhaul is needed and the price. 2. 02 ### Isolate and dismantle Power is isolated, the PCB is removed or protected and the indoor unit is taken apart. 3. 03 ### Clean part by part Blower wheel, coil, drain pan and housing are cleaned separately and checked for wear. 4. 04 ### Reassemble and test Everything goes back together and the unit runs a full cooling and drainage test. 5. 05 ### Show and pay We show you what came out, clean up, and you pay after the job. Warranty starts. You get a time estimate with your quote. Payment is made after the job. On the job ## Our Chemical Overhaul Work Photos from jobs like yours. Tap any photo to see it larger. Reviews ## What Customers Say About Our Chemical Overhaul Cool Earth Aircon holds a 4.0 star Google rating from 66 reviews, built on 4,560+ units serviced since 2007. 4.0 / 5 66 Google reviews > "Old unit in Taman Jurong kept leaking. They did an overhaul, showed us the sludge in the drain pan, and it has been dry since." M Mr Rahman Taman Jurong > "Got the price on WhatsApp before they came. Three units serviced in our Jurong West flat, they cleaned up after and tested each one." M Mdm Tan Jurong West > "Our bedroom unit smelled musty for months. After the chemical wash the smell is gone and it cools properly again." D Daniel L. Yuhua Sample reviews shown for layout. Replace with real Google reviews before launch. Got questions? ## Chemical Overhaul FAQs ### How much is a chemical overhaul in Jurong? S$130 to S$180 per unit, depending on unit type and condition. You get a fixed quote before work starts and there is no callout fee. ### When do I need an overhaul instead of a chemical wash? Choose an overhaul for strong sour smells, black mould blowing out of the vents, jelly-like sludge in the drain pan, severe loss of cooling, or a unit older than five years that has never had a deep clean. A chemical wash suits milder cases. ### Is a chemical overhaul worth it on an old aircon? If the compressor and fan motor still run well, an overhaul often brings back cooling and stops smells for a fraction of replacement cost. If parts are failing, we tell you before you spend money. ### Can you overhaul an R22 aircon? Yes. Older R22 refrigerant units can be overhauled and topped up after a leak check. Because R22 is no longer used in new systems, plan for replacement in time. ### Will the overhaul stop my aircon leaking? Often, yes. Many leaks in older units come from sludge in the drain pan and line. The overhaul clears both. If the leak is from piping or a cracked pan, we quote the repair separately. ### Does the unit come off the wall? The indoor unit is dismantled in place so its parts can be cleaned one by one. Heavier parts such as the blower wheel are washed separately, then everything is reassembled. ### How long until I need another overhaul? With general servicing every 3 to 4 months, most homes do not need another overhaul for a long while. A chemical wash every year or so keeps the coil and blower clean. ### Is there a warranty on the overhaul? Yes. All work carries a 90-day workmanship warranty. If the same fault comes back within 90 days, we return and fix it free. ### Do you overhaul units in Boon Lay and Taman Jurong? Yes. Older resale flats in Taman Jurong, Boon Lay and Yuhua often have ageing units and old piping, so overhauls are among our most common jobs there. ### Still have a question? Send us a WhatsApp with your units and the problem. We reply with a fixed quote. Chat on WhatsApp [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20servicing%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__ →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20servicing%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__) Read before you book ## Related Guides All guides [/guide/ →](/guide/) ![Person rinsing an aircon filter in a kitchen sink](/images/featured/person-rinsing-a-dusty-aircon-filter-under-running.webp) Decision guide ### Cleaning Aircon Filters Yourself vs Calling a Technician What is safe to clean between visits, what only a technician can reach, and when DIY is no longer enough. [Cleaning Aircon Filters Yourself vs Calling a Technician →](/guide/clean-aircon-filter-yourself-vs-technician/) ![Technician washing an aircon filter in a Jurong HDB flat](/images/featured/technician-washing-an-aircon-filter-under-a-tap-in.webp) Guide ### How Often Should You Service Your Aircon? HDB, Condo and Landed Homes Every 3 to 4 months with daily use. What changes the interval for HDB, condo and landed homes in Jurong. [How Often Should You Service Your Aircon? HDB, Condo and Landed Homes →](/guide/how-often-to-service-aircon/) ## Related Services ### Aircon Chemical Wash Deep clean of the coil, blower wheel and drain parts with the unit left on the wall. For weak cooling or mild smells. Learn more [Aircon Chemical Wash →](/aircon-chemical-wash/) ### Aircon Water Leak Repair Clears choked drain lines and fixes drain pan and pipe faults that cause dripping. Learn more [Aircon Water Leak Repair →](/aircon-water-leak-repair/) ### Aircon Repair Diagnosis and repair of breakdowns and faults, with same-day emergency slots subject to availability. Learn more [Aircon Repair →](/aircon-repair/) ### Aircon Gas Top-Up Refrigerant top-up for R22, R410A and R32 systems, with leak check and pressure test. Learn more [Aircon Gas Top-Up →](/aircon-gas-top-up/) Open 7 days - same-day slots, subject to availability ## Ready to Book Chemical Overhaul? Tell us how many units you have, the problem and your Jurong address. We reply with a price before anyone picks up a tool. Direct line and WhatsApp +65 9427 3833 [tel:+6594273833 →](tel:+6594273833) Open 7 days Mon-Sat to 9:00 PM, Sun to 8:00 PM Office (no Jurong branch) Block 108, 108 Simei Street 1, Singapore 520108 ### Your quote in three steps 1. 1 Send units, problem and address on WhatsApp 2. 2 Get a fixed quote and pick a time slot 3. 3 Pay after the job. 90-day warranty starts WhatsApp for a Fixed Quote [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20chemical%20overhaul%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__ →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20chemical%20overhaul%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__) - No callout fee - Price first - 90-day warranty