1. What is a Boiler Kilowatt Calculator?

Definition: This calculator converts boiler heat output from BTU/h to kilowatts (kW) to help determine appropriate boiler size.

Purpose: It helps homeowners, engineers, and HVAC professionals properly size boilers for heating systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{kW} \) — Boiler power (kilowatts)
• \( Q_{btu} \) — Heat output (BTU per hour)

Explanation: The conversion factor 3412 represents the number of BTUs per hour equivalent to 1 kW of power.

3. Importance of Proper Boiler Sizing

Details: Correct boiler sizing ensures efficient operation, prevents energy waste, and maintains comfort levels while avoiding short cycling.

4. Using the Calculator

Tips: Enter the required heat output in BTU/h (typically calculated based on building heat loss). The result shows the equivalent boiler power in kW.

5. Frequently Asked Questions (FAQ)

Q1: How do I determine my required BTU/h?
A: Perform a heat loss calculation for your building or consult with an HVAC professional.

Q2: What's the typical kW range for residential boilers?
A: Most homes need 15-30 kW boilers, but this varies based on size, insulation, and climate.

Q3: Why convert BTU/h to kW?
A: Many modern boilers are rated in kW, while heat loss calculations often produce results in BTU/h.

Q4: Should I round up the kW result?
A: Yes, boilers come in standard sizes - round up to the nearest available model.

Q5: Does this account for domestic hot water needs?
A: No, this calculates space heating requirements only. Add 3-5 kW if the boiler also heats water.