Aircon Guides · Singapore
Aircon Guides & Troubleshooting
Practical, jargon-free help for Singapore aircon owners — diagnose a problem, decode an error code, or work out what a service should cost. Written by a working aircon team.
Troubleshooting
See all troubleshooting →Diagnose a specific aircon problem and see what fixes it.
Aircon not cold
Runs but won’t blow cold air — usually low gas, a clogged coil, or a dirty condenser.
Aircon leaking water
Dripping from the indoor unit — almost always a blocked drainage path or a frozen coil.
Aircon smells bad
Musty or sour odour when it runs — mould and bacteria on the coil and drainage tray.
Aircon noisy
Rattling, buzzing, or whistling — loose parts, a dirty blower, or a failing motor.
Aircon not turning on
Dead unit or no response — power, remote, a safety cutoff, or a board fault.
Error Codes
See all error codes →Look up what a blinking light or error code means, by aircon brand.
Daikin Error Codes
What the common Daikin aircon error codes and blinking lights mean.
Mitsubishi Electric Error Codes
What the common Mitsubishi Electric aircon error codes and blinking lights mean.
Panasonic Error Codes
What the common Panasonic aircon error codes and blinking lights mean.
LG Error Codes
What the common LG aircon error codes and blinking lights mean.
Midea Error Codes
What the common Midea aircon error codes and blinking lights mean.
Servicing & Maintenance
Understand what a service involves and how to keep your aircon healthy.
How Often Should You Service Your Aircon?
The servicing schedule that fits Singapore’s climate, by usage — plus the signs you’re overdue.
What Happens During a Standard Aircon Servicing
The full step-by-step of a proper service — inspection, coil clean, drain flush, gas check, and testing.
What Size Aircon Do You Need? (BTU Calculator)
Enter your room size and get the right BTU, adjusted for west-facing and top-floor rooms.
How to Clean Your Aircon at Home, Safely
Wash the filters step by step, whether cleaning sprays are worth it, and which parts to leave to a technician.
Types of Aircon in Singapore, Explained
What System 1, 2, 3 and 4 mean, and how wall-mounted, cassette and ducted units differ for servicing.
Aircon Smells Chemical After a Renovation?
Why a newly renovated home smells sharper the moment the aircon starts — and what a chemical wash does and doesn’t fix.
Costs & Pricing
Know what aircon servicing and repairs actually cost in Singapore.
Seasonal tips & updates
Timely aircon advice — hot-weather tips, humidity, and more — on our blog. Choosing a company? Start with our comparison of the best aircon servicing companies in Singapore.