Installation is the biggest aircon spend most Singapore households make, and quotes can be hard to compare because each one bundles different things. We don't publish a price range here. Installation quotes depend so heavily on the system and the home that any single range would mislead. Instead, this guide breaks down what you are paying for so you can read a quote properly.
What you are actually buying
Most homes in Singapore use split systems: an outdoor condenser connected by copper piping to one or more indoor wall units. A single split pairs one outdoor unit with one indoor unit. A multi-split runs several indoor units, often two to four, from one outdoor unit. Multi-splits are common in HDB flats and condos because ledge space is limited.
The units themselves are usually the largest part of the bill. Brand, capacity and energy rating all move the price.
The parts of an installation quote
- Units: the outdoor condenser and each indoor fan coil.
- Copper piping: quotes often include a set length per indoor unit and charge extra beyond it.
- Insulation and trunking: the casing that covers the pipes on your walls.
- Drain piping: to carry condensate away from each indoor unit.
- Electrical work: a new isolator or circuit may be needed.
- Brackets: for the outdoor unit on the ledge.
- Dismantling and disposal: removing the old system, if there is one.
- Hacking: opening up walls or ceilings, where needed.
Ask for these as separate lines. Two quotes with the same headline number can include very different things.
Things that push the cost up
- Long pipe runs between indoor units and the outdoor ledge.
- Concealed piping inside false ceilings or walls.
- A difficult or high outdoor ledge.
- Replacing an old system that needs dismantling.
- New electrical points.
Can you reuse existing piping?
Sometimes. It depends on the pipe size, condition and the refrigerant your new system uses. Some installers won't reuse pipes at all, others will after testing. Ask, and ask whether reuse affects the warranty.
Before installation day
- Check any HDB, condo or MCST rules on where outdoor units can go.
- Clear the walls where trunking will run.
- Agree on indoor unit positions. Avoid placing them directly over beds or blowing straight at sofas.
- Ask how long the job will take and whether power will be off.
After installation
Run each unit and check it cools. Look at the trunking for gaps, and check the drain flows outside. Keep the invoice and warranty papers. There are usually two warranties: the manufacturer's on the units and the installer's on the workmanship. Ask how long each lasts.
Running costs
A higher-efficiency system can cost more upfront and less to run. Singapore's energy label shows a rating on each unit, so you can compare efficiency between models before you buy.
See companies that list aircon installation on their own websites, and read how to choose a company.