1. What is an Electric Heat Calculator for Room Size?

Definition: This calculator estimates the electric heating power needed based on room dimensions and heating requirements.

Purpose: It helps homeowners, builders, and HVAC professionals determine appropriate electric heating capacity for rooms.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( kW \) — Required heating power (kilowatts)
• \( Area \) — Room floor area (square meters)
• \( Height \) — Room height (meters)
• \( Factor \) — Heating factor (watts per cubic meter)

Explanation: The room volume (area × height) is multiplied by a heating factor to get watts, then converted to kilowatts.

3. Importance of Proper Heating Calculation

Details: Accurate heating calculations ensure comfort, energy efficiency, and prevent undersized or oversized heating systems.

4. Using the Calculator

Tips: Enter room area in m², height in m (default 2.4m), and heating factor in W/m³ (default 30). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the heating factor?
A: It represents watts needed per cubic meter, typically 25-35 W/m³ for well-insulated rooms, higher for poorly insulated spaces.

Q2: Why is room height important?
A: Heat requirement depends on total air volume, not just floor area.

Q3: How does insulation affect the calculation?
A: Poor insulation requires a higher factor (35-50 W/m³), excellent insulation may use 20-25 W/m³.

Q4: Can I use this for whole house calculations?
A: Yes, calculate each room separately and sum the results for whole-house heating needs.

Q5: What about rooms with high ceilings?
A: For ceilings over 3m, consider adding 10-15% to the calculated kW or using a higher factor.