Free Aircon Tool
BTU Calculator
Find the exact cooling capacity your room needs — sized for Singapore's tropical heat.
Room area: 12.0 m²
Estimate based on Singapore tropical climate. Actual sizing may vary by insulation, window type, and appliances. Consult our team for precise sizing.
What is BTU and Why Does It Matter?
BTU (British Thermal Unit) measures how much heat an aircon can remove from a room per hour. Higher BTU = more powerful cooling. Choosing the right BTU for your room is critical:
Too Small
The unit runs constantly, struggles to cool the room, wears out faster, and drives up electricity bills.
Too Large
The unit short-cycles, fails to dehumidify properly, and creates cold spots while wasting energy.
In Singapore's tropical climate, the standard international formula needs a +25% adjustment to account for year-round heat and high humidity. Our calculator applies this automatically.
Singapore Aircon Size Quick Reference
| Room Size | Recommended | BTU |
|---|---|---|
| Small bedroom (~10 m²) | 1.0 HP | ~9,000 |
| Master bedroom (~15 m²) | 1.5 HP | ~12,000 |
| Living room (~25 m²) | 2.0 HP | ~18,000 |
| Large open space (~35 m²) | 2.5 HP | ~24,000 |
Based on Singapore tropical climate with standard 2.4m ceilings.
Need Help Choosing an Aircon?
Mr Chong personally advises on every installation — get a quote with zero commitment.
Also try: Energy Cost Estimator · Aircon Service Finder Quiz