HVAC BTU Calculator
Estimate the BTU needed to heat or cool a room based on area, ceiling height, and insulation quality.
How to Use the HVAC BTU Calculator
- Enter the room area.
- Enter ceiling height.
- Select insulation quality.
- Click Calculate for BTU estimate.
Referência Rápida
| De | Para |
|---|---|
| 15 m² (average insul.) | ~9,600 BTU |
| 25 m² (average insul.) | ~16,000 BTU |
| 40 m² (average insul.) | ~25,600 BTU |
| 1 ton AC | 12,000 BTU |
| 1 kW | ~3,412 BTU |
| Window unit | 5,000–12,000 BTU |
Casos de Uso
- •Sizing an air conditioner.
- •Choosing a space heater.
- •Planning HVAC for a new room.
- •Comparing AC unit capacities.
Fórmula
BTU = Area × Factor × (Ceiling height / 2.5). Factor: Poor=50, Average=40, Good=30.
Perguntas Frequentes
What does BTU stand for?
British Thermal Unit — the energy needed to raise 1 pound of water by 1°F.
How do I know my insulation quality?
Poor: old/uninsulated walls. Average: standard insulation. Good: modern well-insulated.
Is it free?
Yes, all calculators are completely free.