🔥 Heater Size Calculator

Find the right BTU and diesel heater size (2kW, 5kW, 8kW) for your van.

📦 Interior volume: -
🔥 Required BTU per hour: -
📊 Required heater size (kW): -
🔧 Heater Recommendations:
2kW Diesel Heater (Chinese/Webasto)
5kW Diesel Heater (most popular)
8kW Diesel Heater (large vans)

📖 Heater Sizing Guide

2kW (6,800 BTU): Short vans, mild climates, minimal heating needs

5kW (17,000 BTU): Standard for most van builds, good down to 0°F

8kW (27,000 BTU): Extended vans, extreme cold, rapid heating

💡 Pro tip: Most van lifers choose the 5kW Chinese diesel heater. It's the right size for 90% of builds and costs $150-300.

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