Aircon Chemical Hydro Wash
Blower and coil water-jet rinsed, unit stays on the wall. From $121.44, transport included.
StringsSG Pte Ltd · UEN 201813375G
Aircon Chemical Hydro Wash in Singapore
Also called a hydro jet wash · From $121.44 per unit · 2026
A chemical hydro wash is the deep clean between a chemical wash and a chemical overhaul. The technician takes out the blower wheel and drain tray, treats the coil and blower with a cleaning chemical and rinses them with a high-pressure water jet. The fan coil stays on the wall, so you get a much cleaner blower than a chemical wash gives, without the time and cost of a full strip-down.
The blower wheel is where dust and mould collect in Singapore's humidity. When it is dirty, the aircon smells musty, throws black specks out of the vents and moves less air, even right after a general service. Rinsing it out with a water jet is what fixes that.
What a Chemical Hydro Wash Includes
1. Inspection and preparation
The technician checks the unit and covers the wall and floor underneath.
2. Partial dismantling
The front panel, filters, blower wheel and drain tray are removed. The fan coil stays on the wall.
3. Chemical treatment
A cleaning chemical is applied to the evaporator coil and blower to loosen dirt, grease and mould.
4. High-pressure water-jet rinse
The coil, blower wheel and drain tray are rinsed with a water jet, which flushes out what the chemical has loosened.
5. Drainage check
The drain tray and drainage pipe are checked so the rinse water and condensate can flow freely.
6. Reassembly and testing
The parts go back in, and the unit is run and tested for airflow and cooling.
Additional work, such as a gas top-up or replacing a part, is quoted on site and done only with your approval.
Chemical Hydro Wash Price
Prices for wall-mounted units, transport included and no callout fee. The price per unit drops as you add units.
| Units | Price | Per unit |
|---|---|---|
| 1 AC unit | SGD 121.44 | $121.44 |
| 2 AC units | SGD 236.81 | $118.41 |
| 3 AC units | SGD 324.85 | $108.28 |
| 4 AC units | SGD 412.90 | $103.22 |
| 5 AC units | SGD 500.94 | $100.19 |
| More than 5 | Open a request for pricing | |
Ceiling cassette and ducted units: choose the mount type in the booking sheet and the price updates before you confirm. See all prices on the aircon servicing price page.
Chemical Wash vs Hydro Wash vs Overhaul
| Compare | Chemical wash | Chemical hydro wash | Chemical overhaul |
|---|---|---|---|
| What comes off | Front panel and filters | Front panel, filters, blower wheel and drain tray | The whole fan coil unit |
| How it is cleaned | Chemical on the coil, rinsed | Chemical on coil and blower, high-pressure water jet | Every part cleaned separately |
| Unit taken off the wall | No | No | Yes |
| Best for | Weak airflow, light musty smell | Musty smell, black specks, dirty blower | Poor cooling after a service, leaks, long unused |
| From (1 unit) | $84.64 | $121.44 | $153.51 |
Signs Your Aircon Needs a Hydro Wash
- A musty or sour smell when the aircon starts
- Black specks blowing out of the vents
- Weak airflow even after a general service
- A blower wheel you can see is coated in dust
- No deep clean in the last 6 to 12 months
If the unit leaks water or still cools poorly after a recent service, a chemical overhaul is usually the better fix. For water dripping indoors, see aircon leaking water.
Why Choose StringsSG for Aircon Servicing
Transparent pricing, verified technicians, a 30-day warranty and requests accepted 24/7.
Instant, Transparent Quotes
See your exact total before you book, transport included. No callout fees, no charges added after the job.
Vetted Technicians, Licensed Contractors
Every technician works for a licensed, ACRA-registered contractor, is identity checked, experience assessed and rated by customers, and follows the service steps StringsSG defines for every job.
Cheaper The More Units You Book
Pricing drops as you add units — about $17 per unit at five units before transport, and every quote already includes transport.
Same-Day & Emergency Servicing
Flag a booking as urgent and we prioritise it. Technicians available across Singapore, 8am to 10pm daily.
Chat Directly With Your Technician
Share photos, confirm access details and follow up after the visit — all kept on record for warranty claims.
Rewards, Referrals & Sign-Up Discounts
Loyalty points for NTUC FairPrice & Grab vouchers, referral rewards, and up to 20% off your first sign-up.
Trusted by Homeowners in Singapore
Real feedback from customers who booked aircon servicing through StringsSG
4.9from 141 Google reviews
Aircon Chemical Hydro Wash FAQs
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