1. What is a BTU Calculator for Garage?

Definition: This calculator estimates the heating requirements (in BTUs per hour) for a garage space based on its size and insulation factors.

Purpose: It helps homeowners and contractors determine the appropriate heating system size for garage spaces.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Required heating capacity (BTU/h)
• \( A \) — Garage area (square feet)
• \( \text{BTU/ft}^2 \) — Base heating requirement per square foot
• \( F_g \) — Garage factor accounting for insulation and climate

Explanation: The garage area is multiplied by a base BTU requirement and then adjusted for garage-specific factors like insulation and exposure.

3. Importance of Proper BTU Calculation

Details: Accurate BTU calculation ensures efficient heating, prevents energy waste, and helps select properly sized heating equipment.

4. Using the Calculator

Tips: Enter the garage area in square feet, base BTU requirement (default 30 BTU/h·ft²), and garage factor (default 1.4). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical BTU per square foot for garages?
A: Most garages need 20-30 BTU/h per square foot as a base value, depending on climate.

Q2: How do I determine the garage factor?
A: Use 1.0-1.2 for insulated garages, 1.3-1.5 for moderately insulated, and 1.5-2.0 for uninsulated spaces.

Q3: Does this account for extreme climates?
A: The garage factor should be increased for very cold climates (add 0.2-0.5 to the factor).

Q4: Should I round up the calculated BTU?
A: Yes, it's recommended to round up to the nearest standard heater size (e.g., 5,000 BTU increments).

Q5: How does ceiling height affect the calculation?
A: For ceilings over 8 feet, multiply the result by (actual height/8) for more accurate sizing.