1. What is a Heater Size Calculator by BTU?

Definition: This calculator estimates the required heater size in BTUs based on the area to be heated and a heating factor.

Purpose: It helps homeowners and professionals determine the appropriate heater capacity for efficient space heating.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( BTU \) — Heater capacity (British Thermal Units per hour)
• \( Sq\ Ft \) — Area to be heated (square feet)
• \( Factor \) — Heating factor (BTU per square foot per hour)

Explanation: The area is multiplied by a standard heating factor to determine the required heater capacity.

3. Importance of Proper Heater Sizing

Details: Correct heater sizing ensures energy efficiency, proper heating, and prevents equipment strain from over/under-sizing.

4. Using the Calculator

Tips: Enter the area in square feet and heating factor (default 20 BTU/sq ft/h). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical heating factor?
A: The standard is 20 BTU/sq ft/h, but this varies by climate (10-15 for mild, 30-40 for very cold).

Q2: When would I adjust the heating factor?
A: Adjust for room type (bathrooms need more), insulation quality, ceiling height, or climate conditions.

Q3: Does this work for whole-house heating?
A: Yes, but calculate each room separately as heating needs vary by space.

Q4: How do I convert BTU to watts?
A: 1 BTU/h ≈ 0.293 watts. Multiply BTU by 0.293 to get watts.

Q5: Should I round up the calculated BTU?
A: Yes, choose the next available heater size above your calculation.