1. What is a Garage Furnace BTU Calculator?

Definition: This calculator estimates the required furnace BTU output for heating a garage based on its square footage.

Purpose: It helps homeowners and contractors determine the appropriate furnace size for garage heating projects.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( BTU \) — British Thermal Units per hour (BTU/h) required
• \( \text{Garage Sq Ft} \) — Square footage of the garage

Explanation: The standard calculation uses 50 BTU per square foot for garage spaces, which accounts for typical insulation levels and temperature requirements.

3. Importance of Proper BTU Calculation

Details: Correct furnace sizing ensures efficient heating, prevents energy waste, and extends equipment lifespan.

4. Using the Calculator

Tips: Simply enter your garage's square footage. The calculator assumes standard garage construction with moderate insulation.

5. Frequently Asked Questions (FAQ)

Q1: Why 50 BTU per square foot?
A: This is the standard calculation for garages, accounting for typically poorer insulation than main living spaces.

Q2: When should I adjust this calculation?
A: Consider using 60 BTU/sq ft for very cold climates or poorly insulated garages, or 40 BTU/sq ft for well-insulated spaces in mild climates.

Q3: Does this include ceiling height considerations?
A: The standard calculation assumes 8-10 ft ceilings. For higher ceilings, multiply the result by (actual height/8).

Q4: What about garage doors?
A: If you have multiple or poorly insulated garage doors, consider adding 10-20% to the calculated BTU.

Q5: Is this for gas or electric heaters?
A: The BTU calculation applies to both, though electric heaters are typically rated in watts (1 watt = 3.41 BTU).