Home Back

Underfloor Heating Pipe Calculator

Pipe Length Formula:

\[ L = \frac{A}{S} \]

ft²
ft

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is an Underfloor Heating Pipe Calculator?

Definition: This calculator estimates the length of pipe needed for underfloor heating systems based on floor area and pipe spacing.

Purpose: It helps heating system designers and installers determine the required pipe length for efficient underfloor heating installations.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ L = \frac{A}{S} \]

Where:

Explanation: The floor area is divided by the pipe spacing to determine the total length of pipe needed to cover the entire area.

3. Importance of Pipe Length Calculation

Details: Accurate pipe length estimation ensures proper heat distribution, system efficiency, and correct material purchasing.

4. Using the Calculator

Tips: Enter the floor area in square feet and pipe spacing in feet (default 1.0 ft). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical pipe spacing for underfloor heating?
A: Standard spacing is 1 ft (12 inches), but can range from 6-18 inches depending on heat requirements.

Q2: Does this include pipe for connections and manifolds?
A: No, consider adding 5-10% extra length for connections and system layout.

Q3: How do I measure the floor area?
A: Multiply length by width of each room, then sum all areas to be heated.

Q4: Does pipe length affect system performance?
A: Yes, longer pipes may require higher water pressure and affect heat distribution.

Q5: Should I use the same spacing throughout?
A: You might use closer spacing in colder areas (like near windows) and wider spacing in warmer areas.

Underfloor Heating Pipe Calculator© - All Rights Reserved 2025