1. What is an Electric Heater Sizing Calculator?

Definition: This calculator estimates the wattage needed for an electric heater based on the area size in square feet.

Purpose: It helps homeowners and professionals determine the appropriate heater size for efficient room heating.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( W \) — Heater wattage (watts)
• \( A \) — Area size (square feet)

Explanation: The standard rule of thumb is 10 watts per square foot for basic heating needs in well-insulated spaces.

3. Importance of Proper Heater Sizing

Details: Correct sizing ensures efficient heating, prevents energy waste, and maintains equipment longevity.

4. Using the Calculator

Tips: Enter the area size in square feet. The value must be > 0. The result shows the recommended heater wattage.

5. Frequently Asked Questions (FAQ)

Q1: Is 10 watts per sq ft always accurate?
A: This is a general guideline. Factors like insulation, ceiling height, and climate may require adjustments.

Q2: What if my room has high ceilings?
A: For ceilings over 8 feet, consider adding 20-30% more wattage to the calculated value.

Q3: Does this work for all room types?
A: Bathrooms may need 15-20 watts/sq ft, while bedrooms typically need 8-10 watts/sq ft.

Q4: How do I convert to BTU?
A: Multiply watts by 3.412 to get BTU/hr (1 watt = 3.412 BTU/hr).

Q5: Should I round up the wattage?
A: Yes, it's recommended to round up to the nearest standard heater size available.