BTU Heat per Sq Ft Calculator

Heating Load Formula:

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

Heating Load (BTU/h):

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1. What is a BTU Heat per Sq Ft Calculator?

Definition: This calculator estimates the heating load in BTUs based on the area and BTU requirements per square foot.

Purpose: It helps HVAC professionals and homeowners determine the heating capacity needed for a space.

2. How Does the Calculator Work?

The calculator uses the formula:

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

Where:

\( Q \) — Heating load (BTU/h)
\( A \) — Area (square feet)
\( \text{BTU/ft}^2 \) — BTU requirement per square foot (BTU/h·ft²)

Explanation: The area is multiplied by the BTU requirement per square foot to get the total heating load.

3. Importance of Heating Load Calculation

Details: Proper heating load estimation ensures efficient HVAC system sizing, energy efficiency, and comfort.

4. Using the Calculator

Tips: Enter the area in square feet and BTU per square foot (default 20 BTU/h·ft²). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical BTU per square foot value?
A: Most homes require 20-30 BTU per square foot, but this varies by climate and insulation.

Q2: How does insulation affect the calculation?
A: Well-insulated spaces may need less (15-20 BTU/ft²), while poorly insulated spaces may need more (30-40 BTU/ft²).

Q3: Should I include all rooms in the area?
A: Yes, include all heated spaces, but calculate rooms with different requirements separately.

Q4: How do I adjust for ceiling height?
A: For ceilings over 8 feet, multiply the result by (ceiling height ÷ 8).

Q5: Does this include heat loss factors?
A: The BTU/ft² value should account for typical heat loss; consult an HVAC professional for precise calculations.