AIRCON COMPARISONS
Side-by-side aircon comparisons for Singapore. Chemical wash vs steam wash, inverter vs non-inverter, repair vs replace and more.
Not sure which option suits your home or budget? These comparisons explain the real differences so you can choose confidently.
Chemical Wash vs Steam Wash
- Chemical wash: deep cleaning with alkaline solution to remove mould, grease and bacteria. Best for yearly deep maintenance.
- Steam wash: high-temperature steam sanitises without harsh chemicals. Ideal for sensitive households and regular refresh cleans.
- Both restore cooling efficiency and improve indoor air quality when done by a trained technician.
General Servicing vs Chemical Overhaul
- General servicing: filter wash, coil wipe, drain check and gas pressure test. Done every 3 months.
- Chemical overhaul: full unit disassembly and soak-cleaning of coils, blower and drain pan. Done once every 1–2 years.
- Overhauls fix persistent odours, leaks and weak airflow that general servicing cannot.
Inverter vs Non-Inverter
- Inverter: quieter, more energy-efficient, better temperature stability. Higher upfront cost.
- Non-inverter: lower purchase price, louder on full blast, higher long-term electricity cost.
- For daily cooling, inverter systems usually pay back the difference in utility savings.
System 2 vs System 3 vs System 4
- System 2: one outdoor condenser with two indoor units. Best for compact homes.
- System 3: three indoor units. Common for 3-room flats and 2-bedroom condos.
- System 4: four indoor units. Popular for larger HDBs and family condos.
- Adding more indoor units than you need increases purchase and running costs.
Repair vs Replacement
- Repair makes sense when the unit is under 8 years old and the fault is isolated (gas, capacitor, fan motor).
- Replacement is smarter if the compressor is failing, the unit is over 10 years old or repair costs exceed half the price of a new system.
- Uncle 7 Aircon provides honest advice and quotes for both options.
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