The Kärcher Stationary Hot Water Generator Series is a commercial heater module designed to convert compatible cold-water pressure washers into hot-water cleaning systems. Built for industrial users in fleet maintenance, oilfield operations, food processing, and other demanding environments, these units handle up to 10 GPM (37.9 L/min) at pressures up to 3,200 PSI (221 bar) while adding high-output thermal cleaning power for grease, oil, grime, and other difficult soils.

KEY FEATURES

HIGH-OUTPUT HOT WATER PERFORMANCE: The Stationary Hot Water Generator Series provides effective heating for cold-water pressure washers operating up to 10 GPM (37.9 L/min). Depending on model, burner output ranges from 540,000 to 920,000 BTU/hr, giving operators powerful thermal cleaning capability for demanding industrial applications.
COMPATIBLE WITH COLD-WATER PRESSURE WASHERS: These heater modules are designed to connect to compatible cold-water pressure washers with flow rates from 6 to 10 GPM (22.7 to 37.9 L/min) and pressures up to 3,200 PSI (221 bar). This makes it possible to add hot-water cleaning capability without replacing an existing cold-water system.
MULTIPLE BURNER CONFIGURATIONS: The series includes natural-gas-fired and oil-fired machine options, allowing facilities to choose a configuration that matches available fuel sources and operating requirements. Additional burner fuel types may include diesel, kerosene, home heating oil, and LP gas depending on model and configuration.
HIGH-EFFICIENCY BURNER: A high-efficiency burner system is designed for dependable and economical operation in demanding commercial environments. Models in the series provide burner output up to 920,000 BTU/hr for applications requiring substantial heat generation.
HEAVY-DUTY STEEL CABINET: The rugged steel cabinet is finished with an epoxy powder coat for increased resistance to weather and demanding working conditions. This durable enclosure protects key internal components while supporting long-term stationary use.
DURABLE HEATING COIL: The heating system uses heavy-duty steel coil construction designed for high-pressure hot-water applications. The heater coil is backed by a 5-year warranty for added confidence in professional and industrial use.
115-VOLT SINGLE-PHASE OPERATION: All models operate on 115 V single-phase electrical power, making electrical integration straightforward in compatible commercial facilities. Depending on the machine option, connected electrical load is either 1 A or 8 A.
ETL SAFETY CERTIFIED: All models are ETL safety certified, providing users with equipment designed and tested to applicable safety requirements. This supports professional installation and operation in commercial and industrial settings.
TRILINGUAL OPERATING LABELS: Helpful operating and safety labels are provided in English, Spanish, and French. This improves accessibility for diverse work crews and supports clearer operating guidance.
VERSATILE INDUSTRIAL APPLICATIONS: These hot-water generators are suitable for fleet maintenance, oilfield operations, food processing, and other applications where heated water can improve cleaning effectiveness. Hot water helps break down grease, oil, and stubborn grime more efficiently than cold water alone.

APPLICATIONS / USE CASES

FLEET CLEANING: Adds heated-water capability to compatible stationary pressure washers used for trucks, trailers, buses, and service vehicles. Hot water helps loosen grease, road film, and oily contamination for more effective cleaning.
OILFIELD OPERATIONS: Well suited for cleaning equipment and components exposed to oil, grease, mud, and industrial residue. The high burner output helps provide the thermal energy needed for demanding field and facility cleaning.
FOOD PROCESSING FACILITIES: Hot water can improve removal of fats, oils, and other processing residues from compatible washable surfaces and equipment. The stationary design makes the system suitable for dedicated wash areas with appropriate utilities.
INDUSTRIAL EQUIPMENT CLEANING: These heater modules can upgrade compatible cold-water pressure washers for machinery, production equipment, service areas, and maintenance facilities. Thermal cleaning helps reduce time and effort when removing heavy contamination.
STATIONARY WASH BAYS: Ideal for facilities that already operate a stationary cold-water pressure washer and need additional hot-water capability. The modular design allows operators to expand cleaning performance without replacing the entire pressure washing system.

WHAT’S INCLUDED

Kärcher Stationary Hot Water Generator
High-efficiency burner system
Heavy-duty steel cabinet
Epoxy powder-coated exterior finish
High-pressure heating coil
115 V single-phase electrical system
Trilingual operating and safety labels
ETL-certified system configuration

MACHINE OPTIONS

9452 – NATURAL-GAS-FIRED: Delivers up to 10 GPM (37.9 L/min) at 3,200 PSI (221 bar) with 540,000 BTU/hr of heating output. This configuration operates on 115 V single-phase power and draws 1 A.
9450 – OIL-FIRED: Delivers up to 10 GPM (37.9 L/min) at 3,200 PSI (221 bar) with 700,000 BTU/hr of heating output. This configuration operates on 115 V single-phase power and draws 8 A.
9462 – NATURAL-GAS-FIRED: Delivers up to 10 GPM (37.9 L/min) at 3,200 PSI (221 bar) with 920,000 BTU/hr of heating output. It is designed for applications requiring the highest natural-gas-fired heating capacity in the series.
9460 – OIL-FIRED: Delivers up to 10 GPM (37.9 L/min) at 3,200 PSI (221 bar) with 920,000 BTU/hr of heating output. This high-capacity oil-fired option is suited for demanding industrial cleaning applications requiring maximum thermal output.

OPTIONAL ACCESSORIES

POWER DAMPENER WIRING HARNESS: Provides the electrical connection required for compatible power dampener installations. It supports proper integration of the dampener system with the hot-water generator.
10 IN. NATURAL-GAS-FIRED DRAFT DIVERTER FOR MODEL 9452: This 10 in. (25.4 cm) draft diverter is designed for use with the natural-gas-fired 9452 model. It supports compatible venting and exhaust management requirements.
12 IN. NATURAL-GAS-FIRED DRAFT DIVERTER FOR MODEL 9462: This 12 in. (30.5 cm) draft diverter is designed for the higher-capacity natural-gas-fired 9462 model. It provides a compatible venting component for properly configured installations.
10 IN. POWER DAMPENER: The 10 in. (25.4 cm) power dampener supports compatible exhaust and airflow management installations. It is intended for use where powered vent control is required.
12 IN. POWER DAMPENER: The 12 in. (30.5 cm) power dampener is intended for larger compatible venting configurations. It helps manage airflow in installations requiring a powered exhaust solution.

TECHNICAL SPECIFICATIONS – 9452

FLOW RATE: 10 GPM (37.9 L/min)
MAXIMUM PRESSURE: 3,200 PSI (221 bar)
VOLTAGE / PHASE: 115 V / 1-phase
CC: 479
HEATING OUTPUT: 540,000 BTU/hr
CONNECTED LOAD: 1 A
FUEL: Natural gas
SHIP WEIGHT: 500 lb. (227 kg)
SHIP DIMENSIONS (L X W X H): 32.5 x 25 x 50.5 in. (82.6 x 63.5 x 128.3 cm)

TECHNICAL SPECIFICATIONS – 9450

FLOW RATE: 10 GPM (37.9 L/min)
MAXIMUM PRESSURE: 3,200 PSI (221 bar)
VOLTAGE / PHASE: 115 V / 1-phase
CC: 389
HEATING OUTPUT: 700,000 BTU/hr
CONNECTED LOAD: 8 A
FUEL: Oil-fired
SHIP WEIGHT: 525 lb. (238 kg)
SHIP DIMENSIONS (L X W X H): 32.5 x 25 x 50.5 in. (82.6 x 63.5 x 128.3 cm)

TECHNICAL SPECIFICATIONS – 9462

FLOW RATE: 10 GPM (37.9 L/min)
MAXIMUM PRESSURE: 3,200 PSI (221 bar)
VOLTAGE / PHASE: 115 V / 1-phase
CC: 688
HEATING OUTPUT: 920,000 BTU/hr
CONNECTED LOAD: 1 A
FUEL: Natural gas
SHIP WEIGHT: 935 lb. (424 kg)
SHIP DIMENSIONS (L X W X H): 40.5 x 32 x 65 in. (102.9 x 81.3 x 165.1 cm)

TECHNICAL SPECIFICATIONS – 9460

FLOW RATE: 10 GPM (37.9 L/min)
MAXIMUM PRESSURE: 3,200 PSI (221 bar)
VOLTAGE / PHASE: 115 V / 1-phase
CC: 688
HEATING OUTPUT: 920,000 BTU/hr
CONNECTED LOAD: 8 A
FUEL: Oil-fired
SHIP WEIGHT: 920 lb. (417 kg)
SHIP DIMENSIONS (L X W X H): 40.5 x 32 x 65 in. (102.9 x 81.3 x 165.1 cm)

FREQUENTLY ASKED QUESTIONS

Q: What does the Kärcher Stationary Hot Water Generator Series do?

It connects to a compatible cold-water pressure washer and adds heated-water cleaning capability. This allows an existing stationary pressure washing system to handle grease, oil, grime, and other difficult soils more effectively.

Q: What pressure washers are compatible with these hot water generators?

The series is designed for compatible cold-water pressure washers operating between 6 and 10 GPM (22.7 to 37.9 L/min) at pressures up to 3,200 PSI (221 bar). The exact installation should be matched to the requirements of the selected heater model.

Q: What fuel options are available?

The listed machine options include natural-gas-fired and oil-fired configurations. Additional burner types may also be available depending on model and installation requirements.

Q: What is the highest heating output available?

The 9462 and 9460 models provide up to 920,000 BTU/hr of heating output. These are the highest-capacity options in the listed series.

Q: Do all models use the same electrical supply?

All four listed models operate on 115 V single-phase electrical power. The 9452 and 9462 draw 1 A, while the 9450 and 9460 draw 8 A.

Expédition:

This product qualifies for Free Shipping, with no minimum purchase. The price shown at checkout is final—no tariffs, no customs delays, and no cross-border complications.

Your order ships from our strategically located warehouses across the lower 48 states of the USA and the lower provinces of Canada, ensuring faster transit times and a more reliable delivery experience.

Before shipment, every order undergoes a thorough inspection to confirm accuracy and ensure your equipment arrives complete and in proper condition.

Our fulfillment team operates with unparalleled speed, processing orders quickly so your equipment arrives within the estimated 3–5 business day timeframe.

From secure packaging to trusted carriers, every step is handled with care. You will receive full carrier and tracking details immediately after shipment, giving you complete confidence until final arrival.

Garantie:

At HOC, we meticulously select our dealers from a pool of globally renowned entities, ensuring that we offer only the best to you. Our commitment to excellence is further reflected in our offering of the most Comprehensive Warranty Periods among equipment dealers across North America.

This approach allows you to make your selection with a sense of confidence and assurance, knowing well that your purchase is under the protection of a warranty that's as steadfast and dependable as the product itself. We invite you to experience the peace of mind and trust that come with choosing HOC, where your satisfaction and security are our topmost priorities.

To view the specific warranty period applicable to this product, and to delve into the details of your protection, please click the link below.

View Kärcher Warranty.pdf