SM4000 Hot & Cold Water Gas Pressure Washer – 4,000 PSI, 4.0 GPM, Diesel Heated, Professional Contractor System

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 SpecificationsMax Pressure: 4,000 PSIFlow Rate: 3.5–4.0 GPMWater Temperature: Up to 212°F (100°C)Power Type: Gasoline engineHeating System: Diesel-fired heaterThermal Efficiency: Up to 90%Control System: 12V DC control panelOperation: 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.