1. What is BTU/h?

BTU/h (British Thermal Units per hour) is a measurement of heat output used to rate heating appliances. One BTU represents the amount of energy needed to raise the temperature of one pound of water by one degree Fahrenheit.

2. How Does the Calculator Work?

The calculator uses the standard BTU calculation formula:

Where:

• \( Area \) — Room area in square feet
• \( 35 \) — Standard multiplier for moderate climates (BTU per sq ft)

Explanation: This basic calculation assumes standard ceiling height (8 ft) and moderate climate. Adjustments may be needed for other conditions.

3. Importance of Proper Heater Sizing

Details: Proper heater sizing ensures efficient operation - too small and it won't heat adequately, too large and it will cycle on/off frequently, reducing efficiency and comfort.

4. Using the Calculator

Tips: Measure your room's length and width to calculate area (length × width). For irregular rooms, divide into rectangles and sum their areas.

5. Frequently Asked Questions (FAQ)

Q1: What if I have high ceilings?
A: For ceilings higher than 8 feet, multiply the result by (ceiling height ÷ 8).

Q2: Does this work for all climates?
A: The 35 multiplier is for moderate climates. Use 45-50 for colder regions, 20-30 for warmer regions.

Q3: What about room insulation?
A: Well-insulated rooms may need less BTU, while poorly insulated rooms may need more (adjust by ±10-20%).

Q4: Should I consider windows?
A: Large or poorly insulated windows increase heat loss - consider adding 10% BTU per large window.

Q5: Is this for central heating or space heaters?
A: This calculation works for both, though central systems have additional factors like duct loss.