Heating Modules: Turns cold water pressure washer into a hot water model The HS-3000 attaches to a cold water pressure washer to produce hot water cleaning. It is electric-powered, diesel or oil-heated and offers the added benefit of portability. It has many of the quality features of Landa horizontal-coil models, including efficient Beckett burner, 36 ft. electrical cord with GFCI, and Schedule 80 heating coil with 5-year warranty. It does not have a pump as it relies on the cold water pressure washer to produce the high-pressure spray. The NG-3000 is a high efficiency natural or liquid propane gas heating module that can be installed indoors. It has a top quality gas valve and Schedule 80 vertical heating coil with 5-year warranty. The “LM” model has electronic ignition and a modulating gas valve for flow volumes over 4 GPM.