What cassette aircon servicing includes
What you pay depends on the type of service and how far the unit is taken apart. The cassette prices that companies publish are for chemical jobs, and none of the 4 companies publishes a general cassette service price.
A cassette is built into the ceiling, with the panel facing the room and the filters, drain pan and drain pump behind it. A technician needs more time to reach these parts than on a wall-mounted unit. If you are still choosing between unit types, see ceiling cassette vs wall-mounted.
Use this list to check what a general service covers:
- Filter and front panel clean
- Coil spray
- Drain pan and drain pump check
- Condensate pipe flush
- Outdoor unit check
When you compare a ceiling cassette aircon cleaning price from different companies, hold each one against this list. Two prices for the same unit can cover quite different work, so ask the company to confirm in writing which items are included.
Published cassette prices
FROM THE HOMEZYPRO DIRECTORY
Published cassette aircon cleaning rates
For the most common unit, the lowest published rates from 4 companies run from S$120 to S$450. Each figure is one company's own advertised rate with its conditions, not a market average or a quote.
See 4 published cassette aircon cleaning rates and sources
| Company | Service as listed | Rate | Source |
|---|---|---|---|
| Konnect Aircon Servicing | Chemical wash (ceiling cassette, per unit) | S$120 per unit | konnect.com.sg |
| Sekihiro Aircon | Chemical treatment, ceiling cassette | S$280 and above | sekihiroaircon.com.sg |
| Jun An Aircon Service Pte. Ltd. | Ceiling Cassette Chemical Overhaul | S$350 to S$400 per unit | junanaircon.com |
| Xool Industries Pte Ltd | Chemical Overhaul (Cassette) | S$450 to S$600 per unit | xool.sg |
4 companies in the directory publish a cassette aircon cleaning line, and 3 of the 4 price it per unit. Their lowest published rates run from S$120 to S$450, as printed. Each line comes from a different company:
- "Chemical wash (ceiling cassette, per unit)": S$120 per unit.
- "Chemical treatment, ceiling cassette": S$280 and above for a ceiling cassette.
- "Ceiling Cassette Chemical Overhaul": S$350 to S$400 per unit.
- "Chemical Overhaul (Cassette)": S$450 to S$600 per unit.
These are a chemical wash, a chemical treatment and two chemical overhauls, not a general service, so they are different jobs. Check what each price covers before you compare them. The chemical treatment line is printed "and above", so ask what would raise it.
None of the 4 companies publishes a general cassette service price, so ask for one. When you ask, check whether the price is per unit and whether access equipment, such as a taller ladder, is extra. For other service types, see aircon servicing prices, and use the servicing cost estimator to plan a servicing budget.
How often to service
The National Environment Agency (NEA) advises servicing your aircon units regularly and getting them inspected annually. Its energy-saving tips also suggest checking the air filter once a month and cleaning or replacing it when necessary so the unit runs efficiently, and setting the temperature at 25 degrees C.
On a cassette, the filters sit behind the ceiling panel, so a monthly check takes a little more effort than on a wall-mounted unit. Plan how you will reach the panel safely, or ask the technician to show you how the panel opens during the next service.
For a full service, ask the company how often it suggests one, and tell it how many hours a day you run the aircon. The guide on how often to service an aircon sets out what to think about before you choose a schedule.
Chemical wash or overhaul
A chemical wash or a chemical overhaul is for a cassette with heavy dirt, a smell or poor cooling. It takes the unit further apart than a general service and is priced as a separate job, as the published lines above show.
If a technician recommends one, ask them to explain why before you agree. Useful questions:
- What did you find, and can you show me?
- Is this a chemical wash, a chemical treatment or a chemical overhaul?
- Could anything else explain the smell or poor cooling?
- Will the unit stay in the ceiling or be taken down?
- Is the price per unit, and what is not included?
For more on what the larger job involves, see the guide to a chemical overhaul.
NEXT STEP
See aircon companies in the directory with their published prices, the areas they say they cover and their sources.
Compare aircon companiesOutdoor unit and brackets
The Building and Construction Authority (BCA) says owners must check aircon supports, such as stainless steel brackets and concrete ledges, and inspect them for corrosion or damage at least every 6 months. It also asks owners to have the trained installer inspect them during routine servicing, and to replace badly corroded brackets with new stainless steel ones. Only trained air-conditioning unit installers certified by BCA can install an aircon unit outside or projecting from a building, and you can check BCA's list of trained installers on its air-conditioning safety page.
HDB's aircon care guide asks flat owners to inspect regularly: brackets on concrete or brick walls only, not timber frames; stainless steel brackets free of corrosion and rust; no leaking; and condensate piping running into the flat to a floor trap. Flat owners face penalties for improper installation and if a unit or its supports fall for lack of maintenance.
Before the visit, ask whether the outdoor unit check is part of the price. Use the aircon servicing checklist to note what was checked on the day.
Questions
Why does cassette servicing cost more than wall-mounted servicing?
Because a cassette takes longer to reach and to service. The panel, filters, drain pan and drain pump all sit in the ceiling, so the technician needs time to set up access and to check the pump as well as the drain. The published cassette rates in the table above are for chemical jobs, so compare them with like-for-like quotes.
Can a cassette aircon be chemically washed in place?
The company doing the work decides, so ask before you book. A chemical wash, a chemical treatment and a chemical overhaul are priced as different jobs. Before you agree, ask whether the unit stays in the ceiling or is taken down, how the floor and furniture below will be protected, and how long the work will take.
Why does my cassette aircon drip water?
A blocked drain or a drain pump that is not working is a common cause. If water cannot leave the drain pan, it can drip through the panel. Turn the unit off with the remote, catch the water in a container and keep clear of any socket or switch it reaches. Then ask a technician to check the drain pan, pump and pipe.
Is a ladder or scaffold needed?
Your ceiling height decides which one the technician needs. When you ask for a price, tell the company how high the ceiling is and what sits below the unit. Ask whether a taller ladder or a scaffold is needed and whether that access equipment is priced separately. Clear the floor under the cassette before the visit so there is room to work.
Can I clean the cassette filters myself?
Yes. NEA's energy-saving tips advise checking the aircon filter once a month and cleaning or replacing it when necessary. Switch the unit off first, use a stable ladder to open the ceiling panel, and let the filters dry fully before you refit them. Leave the coil, drain pan and drain pump to a technician.
Does a cassette drain pump need servicing?
Yes. Ask for the drain pump to be checked at every service, together with the drain pan and the condensate pipe. If the pump stops working, water can back up and drip from the panel. When you book, ask whether the pump check is in the price and what happens if the pump needs a repair.
Prices come only from the sourced company rates in the HomezyPro directory, shown with each company and its source.
Practical guidance for planning a home job in Singapore. Company prices come from the HomezyPro directory, each linked to its source; rules and safety points link to the agency or manufacturer that sets them. This is not a site inspection, a quote or professional advice for your home.
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