1. What is BTU Calculation?

BTU (British Thermal Unit) calculation helps determine the appropriate size of an air conditioning unit or heat pump for a room. Proper sizing ensures efficient cooling and energy use.

2. How Does the Calculator Work?

The calculator uses the basic BTU formula:

Where:

• \( Area \) — Room area in square feet
• \( Factor \) — BTU per square foot (typically 20-40 BTU/sq ft)

Explanation: The factor accounts for room conditions (sun exposure, insulation, etc.). Higher factors are used for sunnier rooms or warmer climates.

3. Importance of Proper Sizing

Details: Correctly sized AC units operate more efficiently, last longer, and provide better humidity control. Oversized units cycle too frequently, while undersized units run constantly.

4. Using the Calculator

Tips: Measure your room's length and width to calculate area. Choose a factor based on:

• 20-25 BTU/sq ft: Shaded rooms, good insulation
• 30-35 BTU/sq ft: Average conditions
• 35-40 BTU/sq ft: Sunny rooms, poor insulation, or hot climates

5. Frequently Asked Questions (FAQ)

Q1: What if my room has high ceilings?
A: For ceilings over 8 feet, multiply the result by 1.25 (add 25% more BTUs).

Q2: How do I account for multiple windows?
A: Add 1,000 BTUs for each window larger than 4 sq ft, especially if south-facing.

Q3: What about kitchen areas?
A: Add 4,000 BTUs for kitchens due to heat from appliances.

Q4: Should I round up to the nearest standard unit size?
A: Yes, but stay within 15% of calculated value. It's better to slightly undersize than oversize.

Q5: Does this work for heat pumps in heating mode?
A: Similar principle, but heating BTU requirements may differ based on climate and insulation.