1. What is a Radiant Floor Heating Calculator?

Definition: This calculator estimates the heat output required for radiant floor heating systems based on floor area, temperature difference, and heat transfer characteristics.

Purpose: It helps HVAC professionals and homeowners determine the heating capacity needed for comfortable radiant floor heating.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Heat output (Watts)
• \( A \) — Floor area (square meters)
• \( T_{floor} \) — Floor surface temperature (Kelvin)
• \( T_{room} \) — Room air temperature (Kelvin)
• \( factor \) — Heat transfer coefficient (W/m²K)

Explanation: The temperature difference multiplied by area and heat transfer factor gives the required heating power.

3. Importance of Radiant Floor Heating Calculation

Details: Proper calculation ensures comfortable floor temperatures, energy efficiency, and correct system sizing.

4. Using the Calculator

Tips: Enter floor area in m², floor and room temperatures in Kelvin (default room temp 293K ≈ 20°C), and heat transfer factor (default 10 W/m²K for typical systems).

5. Frequently Asked Questions (FAQ)

Q1: What's a typical floor temperature?
A: Comfortable floor temperatures are typically 298-303K (25-30°C) for living spaces, lower for bathrooms.

Q2: How do I convert Celsius to Kelvin?
A: Simply add 273.15 to Celsius temperature (e.g., 25°C = 298.15K).

Q3: What affects the heat transfer factor?
A: Floor covering (higher for tile, lower for wood), pipe spacing, and system design affect this value.

Q4: How much heat output is typical?
A: Residential systems typically provide 50-100W/m² depending on climate and insulation.

Q5: Does this include heat loss calculations?
A: No, this is for system output. Heat loss calculations should be done separately for system design.