Heater Size Calculator for Garage

Heater Size Formula:

\[ Q = A \times BTU/ft² \times F_g \]

Heater Size (BTU/h):

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1. What is a Heater Size Calculator for Garage?

Definition: This calculator estimates the required heater size in BTUs per hour based on garage area, heating requirements, and adjustment factors.

Purpose: It helps homeowners and professionals determine the appropriate heater capacity for garage spaces.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Q = A \times BTU/ft² \times F_g \]

Where:

\( Q \) — Heater size (BTU/h)
\( A \) — Garage area (square feet)
\( BTU/ft² \) — Heating requirement per square foot
\( F_g \) — Adjustment factor for insulation and climate

Explanation: The garage area is multiplied by the heating requirement and adjustment factor to determine the total heating capacity needed.

3. Importance of Proper Heater Sizing

Details: Correct heater sizing ensures efficient operation, proper heating, and prevents energy waste from oversizing or inadequate heating from undersizing.

4. Using the Calculator

Tips: Enter the garage area in square feet, heating requirement (default 10 BTU/h·ft²), and adjustment factor (default 1.0). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical BTU per square foot for a garage?
A: Most garages require 10-15 BTU/h per square foot, depending on insulation and climate.

Q2: When should I adjust the factor?
A: Increase for poor insulation (1.2-1.5) or cold climates, decrease for well-insulated spaces (0.8-0.9).

Q3: Does this work for electric heaters?
A: Yes, but electric heaters are typically rated in watts (1 watt ≈ 3.41 BTU/h).

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

Q5: What about ceiling height?
A: For ceilings over 8 feet, multiply the result by (ceiling height ÷ 8).