Underfloor Heating per Square Metre

Heating Power Formula:

\[ Q = A \times W/m² \times 3.412 \]

Heating Power (BTU/h):

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1. What is Underfloor Heating per Square Metre Calculator?

Definition: This calculator estimates the heating power in BTU/h required for underfloor heating based on floor area and power density.

Purpose: It helps homeowners and heating professionals determine the appropriate heating capacity for underfloor heating systems.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Q = A \times W/m² \times 3.412 \]

Where:

\( Q \) — Heating power (BTU/h)
\( A \) — Floor area (square meters)
\( W/m² \) — Power density (Watts per square meter)
\( 3.412 \) — Conversion factor from Watts to BTU/h

Explanation: The floor area is multiplied by the power density to get total Watts, then converted to BTU/h.

3. Importance of Underfloor Heating Calculation

Details: Proper heating power estimation ensures comfortable room temperatures, energy efficiency, and correct system sizing.

4. Using the Calculator

Tips: Enter the floor area in square meters and power density (default 100 W/m²). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical power density for underfloor heating?
A: Most residential systems use 100-150 W/m², but this depends on insulation, climate, and floor covering.

Q2: Why convert to BTU/h?
A: BTU/h is a common unit for heating systems, especially in countries using imperial measurements.

Q3: When would I use a higher power density?
A: In poorly insulated spaces, bathrooms (for faster warm-up), or in colder climates.

Q4: How does floor covering affect the calculation?
A: Thick carpets may require higher power density, while tile floors conduct heat more efficiently.

Q5: Does this include heat loss calculations?
A: No, this is a basic calculation. For precise sizing, consult a heating professional who can account for heat loss.