1. What is an Electric Heat BTU Calculator?

Definition: This calculator converts electrical power in kilowatts (kW) to British Thermal Units per hour (BTU/h) for electric heating systems.

Purpose: It helps determine the heating capacity of electric heaters, heat pumps, or resistance heating elements.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

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

Explanation: 1 kW of electrical power produces 3412 BTU/h of heat energy (100% efficient conversion).

3. Importance of BTU Calculation

Details: Proper BTU calculation ensures adequate heating capacity for spaces, energy efficiency, and correct equipment sizing.

4. Using the Calculator

Tips: Enter the electrical power in kilowatts (kW). The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why 3412 as the conversion factor?
A: 1 kW equals 3412.142 BTU/h exactly, based on the definition of BTU and watt.

Q2: Does this account for efficiency losses?
A: No, this assumes 100% efficiency. For real-world applications, multiply the result by the system's efficiency percentage.

Q3: Can I use this for heat pumps?
A: Yes, but heat pumps typically have COP > 1, so their actual heating capacity would be higher than this calculation.

Q4: What's a typical kW to BTU conversion for space heaters?
A: A standard 1.5 kW space heater produces about 5,118 BTU/h (1.5 × 3412).

Q5: How does this relate to tonnage in HVAC?
A: 1 ton of cooling = 12,000 BTU/h ≈ 3.516 kW (though cooling and heating calculations differ).