The 1800 Series Hot Water Pressure Washer is a compact, affordable solution for indoor hot-water cleaning. The 1800 Series’ utilizes Hotsy’s high-efficiency, vertical hot-water coil which can be configured to use diesel/oil, natural gas, or propane as fuel. The sleek cabinet panels are easily removed to provide access to the Smart Relay control panel, allowing the user to set the thermostat to the desired temperature, run time, auto start/stop, and time delay shut down functions. This heavy-duty cleaning machine is ideal for use in manufacturing and food processing facilities where hot water is needed for indoor cleaning of industrial machinery and equipment. All models are certified to meet UL-1776 safety standards.