BE Stainless Steel Diesel Fired Hot Box 8-10 GPM

Turn Cold Water Pressure Washers into a Hot Water Beast

The BE Power Equipment 99012V Vertical Diesel-Fired Hot Box is built for professionals who need serious heat and high flow without upgrading to a full hot water pressure washer. Designed to pair seamlessly with existing cold water pressure washers, the 99012V delivers on-demand hot water for faster, more effective cleaning on demanding job sites.

Engineered for high-volume applications, this hot box supports 8.0–10.0 GPM, making it ideal for fleet washing, agriculture, heavy equipment, and industrial cleaning. Powered by a 12VDC system and producing 420,000 BTU, the 99012V heats water up to 93°C / 200°F, dramatically improving grease removal and reducing chemical use.

Housed in a rugged powder-coated steel frame, the vertical design keeps the footprint compact while delivering industrial-grade durability and performance.

Built for High-Flow Hot Water Performance

The 99012V is purpose-built for operators who require heat at higher flow rates. Adding hot water to your pressure washer allows you to:

• Cut through grease, oil, and heavy grime faster

• Reduce detergent usage

• Improve cleaning efficiency on large surface areas

• Tackle tough industrial and agricultural cleaning jobs

Features

High-Output Diesel Heating System

At the core of the 99012V is an SDC diesel burner with electronic ignition, designed for reliable ignition and consistent heat output in demanding environments.

• 420,000 BTU output

• Maximum water temperature of 93°C / 200°F

• 12VDC operation

• Toggle burner on/off switch

• Inline fuel filter for burner protection

Heavy-Duty Heating Coil Assembly

To support high flow rates, the 99012V features an extended 260’ x 1/2” Schedule 80 cold-rolled steel heating coil.

• Designed for 8.0–10.0 GPM systems

• Schedule 80 construction resists pressure and thermal stress

• Optimized for long service life and efficient heat transfer

Integrated Safety and Flow Monitoring

The 99012V includes essential protection features to ensure safe and controlled operation:

• Flow switch to monitor water movement

• Rupture disk for pressure protection

• Toggle burner switch for operator control

• Inline fuel filter to protect burner components

Extended Runtime Fuel Capacity

A 7-gallon (26.5 L) black poly diesel fuel tank provides long run times, allowing operators to work longer without frequent refueling.

Industrial Frame Construction

The powder-coated steel frame delivers strength, corrosion resistance, and stability on demanding job sites. The vertical layout keeps the unit compact while maintaining easy access for service and maintenance.

Product Specifications

Model: 99012V
Compatible Flow Rate: 8.0–10.0 GPM
Power Supply: 12VDC
Battery Required: Group 24 Deep Cycle (not included)
Cord / Plug: No cord / No plug
Burner: SDC diesel burner with electronic ignitor
BTU Output: 420,000
Maximum Water Temperature: 93°C / 200°F
Heating Coil: 260’ x 1/2” Schedule 80 cold-rolled steel
Fuel Tank Capacity: 26.5 L / 7 gal black poly
Adjustable Thermostat: Yes
Flow Switch: Yes
High Limit Switch: No
Rupture Disk: Yes
Inline Fuel Filter: Yes
Burner Switch: Toggle

Warranty Coverage

• Burner: 3 Years

• Heating Coil: Lifetime

Shipping Information

Shipping Weight: 545 lbs
Shipping Dimensions (L × W × H): 48” × 40” × 62”

Factory Tested for Performance

All BE Power Equipment hot boxes are tested prior to shipping. Units may show signs of testing or residual fuel odor, confirming proper operation and quality control.

Serious Heat for High-Flow Cleaning

For professionals running high-GPM cold water pressure washers who need reliable hot water performance, the 99012V Hot Box delivers industrial heat, durability, and efficiency on demand.

99012V — high flow, high heat, built for real work.

About Expert Power Wash

Expert Power Wash is a family-owned pressure washing equipment shop in Oregon City, OR, run by Tim and Kristina. Before we built equipment, we ran our own pressure washing business for more than ten years — so the parts and chemicals on our shelves are the ones we trust on real jobs.

Our storefront stocks thousands of parts, chemicals and supplies, most in-stock orders ship the same day, and when you call 503-403-6185 you talk to people who have run this gear.

Freight Shipping & Pickup

This item isn't eligible for free shipping. It ships LTL freight on a pallet, and the freight rate for your region is shown at checkout. Choose Business / Loading Dock if you have a dock, forklift, or help to unload, or Residential with Liftgate and the carrier will lower the pallet to the ground.

FREE local pickup is available at our Oregon City shop, Monday–Thursday 8am–4pm.