BTU Calculator for Garage Heater

BTU Calculation Formula:

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

Required BTU (Q): BTU/h

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is a BTU Calculator for Garage Heaters?

Definition: This calculator estimates the heating capacity (in BTUs) required for a garage space based on area, BTU per square foot, and garage-specific factors.

Purpose: It helps homeowners and contractors properly size garage heaters for efficient and effective heating.

2. How Does the Calculator Work?

The calculator uses the formula:

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

Where:

\( Q \) — Required heating capacity (BTU/h)
\( A \) — Area of the garage (square feet)
\( \text{BTU/ft}^2 \) — Heating requirement per square foot
\( F_g \) — Garage-specific adjustment factor

Explanation: The base heating requirement is calculated by multiplying area by BTU per square foot, then adjusted for garage-specific conditions.

3. Importance of Proper BTU Calculation

Details: Correct BTU calculation ensures your garage heater is neither undersized (ineffective) nor oversized (wastes energy and money).

4. Using the Calculator

Tips: Enter the garage area in square feet, BTU per square foot (default 30 BTU/h·ft²), and garage factor (default 1.5). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical BTU/ft² value?
A: For garages, 30-50 BTU/h per square foot is common, depending on insulation and climate.

Q2: What does the garage factor represent?
A: It accounts for garage-specific conditions like poor insulation, high ceilings, or frequent door openings.

Q3: When should I increase the garage factor?
A: Use higher factors (1.5-2.0) for poorly insulated garages, very cold climates, or garages with high ceilings.

Q4: How do I measure my garage area?
A: Multiply length by width of your garage space in feet.

Q5: Should I round up the calculated BTU?
A: Yes, it's recommended to round up to the nearest standard heater size for optimal performance.