1. What is an Electric Heater BTU Calculator?

Definition: This calculator converts electric heater wattage to BTU (British Thermal Units) output.

Purpose: It helps determine the heating capacity of electric heaters for proper sizing and comparison with other heating systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( BTU \) — Heating capacity (BTU per hour)
• \( Watts \) — Electrical power input (Watts)

Explanation: 1 Watt of electrical power produces approximately 3.412 BTU of heat per hour.

3. Importance of BTU Calculation

Details: Knowing the BTU output helps select appropriately sized heaters for rooms, ensuring efficient heating without energy waste.

4. Using the Calculator

Tips: Enter the heater's wattage (found on the specification plate). The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why 3.412 as the conversion factor?
A: This is the standard conversion rate where 1 Watt = 3.412 BTU/h, based on the exact definition of BTU.

Q2: Does this account for heater efficiency?
A: Electric resistance heaters are 100% efficient, so all electrical energy converts to heat. Heat pumps would use a different calculation.

Q3: How many BTUs do I need per square foot?
A: Typically 20-30 BTU per sq ft in mild climates, 30-40 in cold areas, but this depends on insulation and other factors.

Q4: Can I convert BTU back to Watts?
A: Yes, divide BTU by 3.412 to get Watts.

Q5: Is this the same for all electric heaters?
A: Yes, for resistance heaters. For heat pumps, you'd need to include the COP (Coefficient of Performance).