1. What is a Gas Garage Heater Size Calculator?

Definition: This calculator estimates the required heating capacity (in BTU/h) for a gas garage heater based on garage volume and desired temperature increase.

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:

Where:

• \( Size \) — Heater capacity (BTU per hour)
• \( Garage\ Volume \) — Total volume of the garage (cubic feet)
• \( \Delta T \) — Desired temperature increase (°F)
• \( 0.133 \) — Standard heating factor for garages

Explanation: The formula accounts for the space volume and how much warmer you want the garage compared to outside temperature.

3. Importance of Proper Heater Sizing

Details: Correct sizing ensures efficient operation, prevents underheating, and avoids excessive energy consumption from an oversized unit.

4. Using the Calculator

Tips: Enter the garage volume in cubic feet and desired temperature increase (default 30°F). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I calculate garage volume?
A: Multiply length × width × height of your garage in feet.

Q2: What's a typical ΔT value?
A: 30°F is common (heating from 20°F outside to 50°F inside), but adjust based on your climate and comfort needs.

Q3: Why is the factor 0.133?
A: This accounts for typical garage insulation and air exchange rates.

Q4: Should I round up the result?
A: Yes, choose the next available heater size above your calculated value.

Q5: What if my garage is poorly insulated?
A: Consider increasing the result by 20-30% or using a higher ΔT value.