Upgrade high-flow cold water pressure washers with powerful hot water performance using this diesel-fired hot box. Designed to connect directly to existing systems, it transforms cold water setups into efficient hot water cleaning solutions for removing grease, oil, and heavy buildup.
Built for high-volume applications, this unit supports 8.0–10.0 GPM systems, making it ideal for large-scale cleaning jobs. Powered by 115VAC, it is well-suited for shop environments, wash bays, and stationary installations. A high-output diesel burner delivers up to 880,000 BTU, heating water up to 200°F (93°C) for faster cleaning and reduced chemical use.
Constructed with a durable powder-coated steel frame, the vertical design provides a compact footprint while protecting internal components. It is engineered for reliable, on-demand hot water in demanding commercial and industrial environments.
A heavy-duty 260 ft heating coil, encased in a stainless steel coil wrap, is designed for efficient heat transfer at higher flow rates, ensuring consistent performance under load. Integrated safety features such as an ST7 flow switch, high-limit protection, and rupture disk help ensure safe and dependable operation.
A large 7-gallon poly diesel fuel tank supports extended runtime, making it ideal for long cleaning sessions without frequent refueling.
Key Features
- Converts cold water pressure washers into hot water systems
- Designed for high-flow 8.0–10.0 GPM pressure washers
- 115VAC power for shop and stationary installations
- Diesel-fired burner with up to 880,000 BTU output
- Heats water up to 200°F (93°C) for improved cleaning efficiency
- Beckett burner with adjustable thermostat
- 260 ft x 1/2" heating coil with stainless steel coil wrap for high-flow performance
- ST7 flow switch for operational safety
- High-limit switch to prevent overheating
- Rupture disk for pressure protection
- Inline fuel filter for burner reliability
- 7-gallon poly fuel tank for extended runtime
- Powder-coated steel frame for durability
- Compact vertical design for space-saving installation
| Specifications |
Details |
| Model |
99115V |
| Compatible Flow Rate |
8.0 – 10.0 GPM |
| Power Supply |
115V AC |
| Battery Required |
N/A |
| Amperage |
15A |
| Cord / Plug |
35 ft GFCI |
| Burner |
SM Diesel Burner (Electronic Ignition) |
| BTU Output |
880,000 |
| Maximum Temperature |
200°F (93°C) |
| Heating Coil |
260 ft x 1/2" Schedule 80 Cold-Rolled Steel |
| Fuel Tank Capacity |
7 gal (26.5 L) Black Poly |
| Adjustable Thermostat |
Yes |
| Flow Switch |
Yes (ST7) |
| High Limit Switch |
Yes |
| Rupture Disk |
Yes |
| Inline Fuel Filter |
Yes |
| Burner Switch |
Toggle |
| Frame |
Powder Coated Steel |
| Heating Coil Warranty |
3 Years |
| Unit Dimensions (L × W × H) |
34" × 25" × 54" |
| Unit Weight |
545 lbs |
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