1. What is the Heating kW Calculation?

The heating kW calculation estimates the required heating power for a room based on its volume, insulation quality, and desired temperature increase. It helps determine appropriate heating system capacity.

2. How Does the Calculator Work?

The calculator uses the heating kW formula:

Where:

• \( room\_volume\_m3 \) — Room volume in cubic meters
• \( insulation\_factor \) — Insulation quality (1-4)
• \( delta\_T \) — Desired temperature increase in °C
• 860 — Conversion factor (kcal/h to kW)

Explanation: The equation calculates the thermal power needed to achieve the desired temperature based on room characteristics.

3. Importance of Proper Heating Calculation

Details: Accurate heating calculations ensure comfort, energy efficiency, and proper sizing of heating equipment to avoid underheating or energy waste.

4. Using the Calculator

Tips: Measure room dimensions accurately. Select insulation factor based on your building's insulation quality. ΔT is the difference between desired room temperature and outside temperature.

5. Frequently Asked Questions (FAQ)

Q1: What insulation factor should I use?
A: Use 4 for poor insulation (old buildings), 3 for average, 2 for good (modern standards), and 1 for excellent (passive house standards).

Q2: How do I calculate room volume?
A: Multiply room length × width × height in meters to get cubic meters.

Q3: What ΔT should I use?
A: Use the difference between your desired room temperature (e.g., 20°C) and the lowest expected outside temperature (e.g., -5°C would give ΔT=25).

Q4: Does this account for heat loss through windows?
A: The insulation factor indirectly accounts for all heat loss mechanisms including windows, walls, and ventilation.

Q5: Should I add a safety margin?
A: It's common to add 10-20% to the calculated value to account for extreme conditions and heat-up periods.