1. What is a Combi Boiler kW Calculator?

Definition: This calculator converts boiler power rating from BTU/h to kilowatts (kW).

Purpose: It helps HVAC professionals and homeowners compare and understand boiler specifications which may be listed in different units.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( kW \) — Boiler power in kilowatts
• \( BTU \) — Boiler power in British Thermal Units per hour

Explanation: 1 kW equals 3412 BTU/h, so we divide the BTU rating by this conversion factor.

3. Importance of Boiler Power Conversion

Details: Proper power unit conversion ensures accurate system sizing and comparison between different boiler models.

4. Using the Calculator

Tips: Enter the boiler's BTU rating (must be > 0). The calculator will output the equivalent power in kilowatts.

5. Frequently Asked Questions (FAQ)

Q1: Why convert BTU to kW?
A: In many countries, boiler specifications are listed in kW, while some manufacturers use BTU/h.

Q2: What's a typical kW rating for a combi boiler?
A: Residential combi boilers typically range from 24-42 kW (82,000-143,000 BTU/h).

Q3: Is 3412 the exact conversion factor?
A: Yes, 1 kW equals exactly 3412.142 BTU/h by definition.

Q4: Should I round the kW result?
A: Boiler kW ratings are typically whole numbers, but precise calculation helps with accurate comparisons.

Q5: Does this work for all boiler types?
A: Yes, the conversion applies to any boiler's power rating, regardless of type.