12 Volt Hot Boxes for Mobile Pressure Washing

Heat your water on the go with our 12 volt hot boxes, designed for mobile pressure washing rigs and off-grid cleaning operations. These diesel-fired water heaters connect directly to your vehicle's 12V electrical system, delivering hot water without the need for shore power or a generator.

• Diesel-Fired Heating: Efficient fuel burners that heat water quickly for on-demand hot water washing
• 12V DC Power: Runs directly off your truck or trailer battery — no generator required
• Compact & Portable: Designed to mount on pressure wash trailers and service vehicles
• Replacement Parts: Burner components, coils, and fittings available

Ideal for contractors who need hot water capability without a stationary setup. Fast shipping on all in-stock items.