| Required Cooling Capacity (BTU/hr) | hesaplanacak |
|---|---|
| Required Capacity (kW) | hesaplanacak |
| Suggested AC Class | hesaplanacak |
| Estimated Annual Energy Cost | hesaplanacak |
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What Is BTU and Why Does It Matter?
BTU (British Thermal Unit) measures an air conditioner's cooling or heating capacity. Choosing the correct BTU size is critical — an undersized unit runs continuously and cannot reach target temperature; an oversized unit short-cycles, leaving air humid and uncomfortable.
Basic Sizing Rule
A general starting point: 20 BTU per square foot of floor space (or 215 BTU per m2).
Example: 20 m2 room = 20 x 215 = 4,300 BTU minimum
Adjustments for Room Conditions
| Condition | Adjustment |
|---|---|
| Heavily shaded room | Reduce capacity by 10% |
| Very sunny room | Increase capacity by 10% |
| Room with more than 2 occupants | Add 600 BTU per extra person |
| Kitchen / cooking area | Add 4,000 BTU |
| High ceiling (over 2.7 m) | Increase by ceiling height ratio |
| Poor insulation / old building | Add 10–20% |
BTU to kW Conversion
1 kW = 3,412 BTU/hr | 1 BTU/hr = 0.000293 kW
Common sizes: 9,000 BTU = 2.6 kW | 12,000 BTU = 3.5 kW | 18,000 BTU = 5.3 kW
Energy Efficiency (EER / SEER)
Higher EER (Energy Efficiency Ratio) means lower running costs. Modern inverter ACs with SEER ratings of 14+ are significantly more efficient than older fixed-speed units. An inverter AC can reduce cooling costs by 30–50%.
How to Use This Calculator
Using our calculator is simple: enter the required values into the input fields and click the calculate button. Results are displayed instantly on screen. You can adjust the values and recalculate to compare different scenarios and find the best option for your situation.
Frequently Asked Questions
| Question | Answer |
|---|---|
| How accurate are the results? | We use standard formulas and up-to-date 2025 rates. Individual circumstances may vary slightly. |
| Is this calculator free? | Yes, completely free and no registration required. |
| What should I do for exact figures? | For precise information, consult a relevant professional or official authority. |
| Does it work on mobile devices? | Yes, it works seamlessly on all devices and screen sizes. |
Important Notes
This calculator is provided for informational purposes only. For legal, financial, or medical decisions, always seek advice from qualified professionals. Calculation results do not constitute official documents. Legislative changes may affect results; please visit the relevant official website for the most up-to-date information. Our calculators are regularly updated to reflect current regulations and rates.
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