• Free shipping to 48 contiguous states
• Deliver in 3-8 business days
• 2-year manufacturer warranty

The SANITMAX SM4000 is a professional-grade gasoline-powered pressure washer with instant hot and cold water output, engineered for contractors and industrial users who need serious grease-cutting power without relying on electricity.

With up to 4,000 PSI of pressure, 4.0 GPM flow, and a diesel-fired high-efficiency heating system, the SM4000 is built to tackle oil, grease, and heavy contamination in demanding outdoor environments.

⚠ Professional equipment. Outdoor use only. Trained operators required.

Key Benefits

Instant Hot Water for Grease & Oil Removal: On-demand diesel heating delivers hot water instantly—no waiting time—dramatically improving cleaning efficiency and reducing chemical use when removing grease, oil, and heavy soil.

Gasoline Powered – Jobsite Independent: Gasoline engine operation allows use in locations without electricity, making the SM4000 ideal for construction sites, farms, yards, and industrial facilities.

Strong Contractor-Grade Performance: Delivers up to 4,000 PSI at 4.0 GPM, a proven combination for professional surface cleaning, equipment washing, and sanitation tasks.

Industrial Safety & Control Systems: Integrated flame detection, flow switch heater protection, pressure switch with auto gun-off, and low-fuel safety systems support safe professional operation.

Professional Hot & Cold Water Pressure Washing — Anywhere

The SANITMAX SM4000 Hot & Cold Water High Pressure Washer is designed for professional and industrial cleaning applications where mobility, heat, and power are essential. By pressurizing cold water through a diesel-fired stainless-steel heating system, the SM4000 provides instant hot water output with up to 90% thermal efficiency, helping reduce fuel consumption while maintaining powerful cleaning performance.

This unit combines a gasoline engine for mechanical power with a diesel heating system for water temperature control, making it a self-contained solution for demanding cleaning jobs.

Hot Water, Cold Water & Steam Capability

• Cold Water Mode for general rinsing and surface cleaning
• Hot Water Mode (up to 212°F / 100°C) for grease, oil, and sanitation
• Steam Function available for trained professionals only, with controlled pressure and temperature settings
• ⚠ Steam operation must be performed only by qualified personnel following the user manual.

Built for Professional Safety & Reliability

The SM4000 incorporates multiple protection systems to safeguard both operator and equipment:

• Trigger lock on spray gun
• Inlet flow switch to protect heater from dry firing
• Flame detection system with automatic shutdown
• Pressure switch with auto gun-off when trigger is released
• Low diesel fuel safety shutoff and warning indicators

Typical Applications

• Construction & heavy equipment cleaning
• Industrial oil and grease removal
• Fleet and vehicle washing
• Agricultural equipment sanitation
• Property and facility maintenance
• Animal housing and farm sanitation
• Swimming pool and hard-surface disinfection

⚠ Important Use Requirements (Must Read)

• Outdoor use only – gasoline engine and diesel heater require ventilation
• Gasoline for engine / diesel for heating system
• Cold water supply only (heater raises temperature internally)
• Trained operators and PPE required
• Not intended for residential or enclosed indoor use

Technical Specifications

Max Pressure: 4,000 PSI
Flow Rate: 3.5–4.0 GPM
Water Temperature: Up to 212°F (100°C)
Power Type: Gasoline engine
Heating System: Diesel-fired heater
Thermal Efficiency: Up to 90%
Control System: 12V DC control panel
Operation: Hot / Cold / Steam (trained personnel only)

Why Choose SANITMAX

SANITMAX delivers professional cleaning equipment built for real-world conditions. The SM4000 offers contractors and industrial users a powerful alternative to legacy hot water pressure washer brands—combining performance, safety, and value.