What aircon services can I book in Singapore?
The usual jobs are general servicing, chemical wash, chemical overhaul, gas top-up, installation and repair. Each page lists companies whose own websites mention that service. Always confirm the scope of work, the number of units covered and any warranty in writing before the technician starts.

Which job do I need?
General servicing. A general service cleans the filters, front panel and drain line so the unit keeps cooling and stops dripping.
Chemical wash. A chemical wash takes the indoor unit's coil and blower out of the grime that a normal service can't reach, without fully stripping the unit.
Chemical overhaul. An overhaul strips the indoor unit down so the coil, blower and tray can be soaked and scrubbed, and is the deepest clean on offer.
Gas top-up. A gas top-up adds refrigerant when pressure is low. A good technician checks for a leak first, because gas doesn't get used up.
Installation. Installation covers new systems and replacement units, including piping, trunking and the outdoor condenser bracket.
Repair & troubleshooting. Repair work covers units that leak water, blow warm air, trip the breaker or make new noises.