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12VDC, 8-10 GPM Diesel Fired Hot Box - 99012V

12VDC, 8-10 GPM Diesel Fired Hot Box - 99012V

Specifications

FRAME

Powder Coated Steel Frame

GPM

10

SERIES

Commercial

WARRANTY

Burner: 3 Years / Coil: Lifetime

VOLTS

12VDC

MAX TEMPRATURE

93°C / 200°F

MATERIAL

Powder Coated

Weight

545 lbs

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PRODUCT

DESCRIPTION

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.

Help me Choose
my Pressure Washer.

Compare the specifications of your chosen pressure washers to determine the right fit for your application.

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Frequently Asked Questions about Pressure Washers

How to store a pressure washer?

To ensure the durability of your heavy duty pressure washer:

  • Empty the gas tank to prevent fuel from degrading or clogging the engine.
  • Empty the pump and hoses of any remaining water.
  • Perform necessary maintenance before storage.
  • Store in a dry area.
  • Cover.

What is a pressure washer?

A power washer is a cleaning machine that uses a gasoline engine to power a high pressure water pump and nozzle. It’s used to clean driveways, decks, vehicles, outdoor furniture and more by spraying water at high PSI to remove dirt, grime, mold and other debris.Many models also come with a detergent tank for added cleaning power.

How does a power washer work?

A power washer works by drawing water from a connected hose and pumping it through a high pressure nozzle. The gas engine powers the pump which pressurizes the water and then expels it through the nozzle at high speed to clean the surface. The water pressure is measured in PSI (pounds per square inch) and the flow rate is measured in GPM (gallons per minute).Many models also feature adjustable water pressure settings to cater to different cleaning needs. BE makes pressure washing easy with models available for light jobs and heavy duty commercial cleaning projects.

Gas vs Electric power washers?

The main difference is that a gas pressure washer, known for its cleaning power, is powered by a gasoline engine, making it more powerful and portable, while an electric pressure washer is powered by electricity and is generally quieter and lighter.

Gas pressure washers are for heavy duty and large areas due to their durability, whereas electric pressure washers are for smaller jobs.

Your BE electric pressure washer is perfect for smaller jobs and built for portability, and we offer a wide range of electric models. Included with our electric models is a long extension cord for use anywhere around your house.

What to consider?

When choosing a gas pressure washer consider:

  • Pressure (PSI): More PSI means more cleaning power but also more potential for damaging delicate surfaces.
  • Flow Rate (GPM): More GPM means faster cleaning as more water is dispensed.
  • Engine Power: Bigger engines mean more durability and power.
  • Portability: Weight, handle design and wheel size for easier to move.
  • Nozzles: Multiple spray nozzles to adjust the spray pattern for different tasks.
  • Adjustable Nozzle: Allows for fine-tuning the spray intensity and pattern for various cleaning needs.

How much pressure do I need for?

The required pressure (PSI) and cleaning power depend on the surface you’re cleaning:

  • Light duty (car washing, outdoor furniture): 1,300-1,800 PSI.
  • Medium duty (patios, fences, decks): 2,000-3,000 PSI.
  • Heavy duty (driveways, brick walls, large equipment): 3,000+ PSI.

Many pressure washers come with adjustable pressure settings to handle different cleaning tasks effectively.

Can a pressure washing damage surfaces?

Yes, a power washer can damage surfaces if used incorrectly. High pressure water can strip paint, dent soft surfaces or even cause structural damage if the pressure is too high or the nozzle is held too close to the surface. Always use the right PSI for the material you’re cleaning and keep a safe distance from delicate surfaces.

To prevent damage, consider using a model with adjustable pressure settings.

How to maintain your pressure washer?

To ensure the durability and smooth operation of a pressure washer:

  • Change the oil as per manufacturer’s instructions.
  • Clean or replace the air filter to ensure good airflow.
  • Inspect and clean the nozzle regularly to prevent clogs.
  • Drain the gas tank if you’re storing the washer for a long time.
  • Check the hoses for leaks or damage and replace them if needed.
  • Follow regular maintenance requirements to keep the washer in optimal condition.

Can I use a pressure washer in cold weather and low water temperature?

You can use a pressure washer in cold weather but it’s more difficult. The water flow rate in the hoses and pump can freeze and damage the equipment. If you plan to use your pressure washer in cold temperatures make sure to winterize it and store it in a warm area when not in use. You can also use anti-freeze solutions for pressure washers.

Some models are designed to use hot water, which can be particularly effective for cleaning in cold weather.

Do I need any accessories?

Common accessories for power washers: