In Floor Heating BTU Calculator

Heating Load Formula:

\[ Q = A \times \text{BTU/ft}^2 \times F_f \]

Heating Load (Q):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is an In Floor Heating BTU Calculator?

Definition: This calculator estimates the heating load (in BTUs per hour) required for radiant floor heating systems based on floor area, BTU requirements, and floor material factors.

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

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Q = A \times \text{BTU/ft}^2 \times F_f \]

Where:

\( Q \) — Heating load (BTU/h)
\( A \) — Floor area (square feet)
\( \text{BTU/ft}^2 \) — BTU requirement per square foot
\( F_f \) — Floor material factor

Explanation: The floor area is multiplied by the BTU requirement and adjusted for the floor material's thermal properties.

3. Importance of Accurate BTU Calculation

Details: Proper BTU estimation ensures efficient heating, prevents system overloading, and helps with proper equipment sizing.

4. Using the Calculator

Tips: Enter the floor area in square feet, BTU/ft² requirement (default 25 BTU/h·ft²), and floor factor (default 1.2). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical BTU/ft² requirement?
A: Most residential systems use 25-35 BTU/h·ft², but this varies by climate and insulation.

Q2: How do I determine the floor factor?
A: Common factors: 1.0 for concrete, 1.2 for tile, 1.4 for wood, 1.6 for carpet.

Q3: Does this include heat loss calculations?
A: No, this is a basic calculation. For precise results, consider professional heat loss analysis.

Q4: Can I use this for commercial spaces?
A: Yes, but commercial spaces often require higher BTU/ft² values (35-50 BTU/h·ft²).

Q5: How does ceiling height affect the calculation?
A: This calculator assumes standard 8-9 ft ceilings. For higher ceilings, increase BTU/ft² by 10% per additional foot.