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Boxxer™ 421

Rugged, Tough and Smooth Running

HydraMaster's Boxxer is a smooth, low noise/low vibration machine with incredible cleaning performance.

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Big Machine Performance at Small Machine Cost

For years, HydraMaster has led the truckmount industry with the Boxxer 421. The compact 421 is a smooth, low noise, low vibration machine with incredible cleaning performance. The winning combination of a Briggs & Stratton industrial series engine and the radically improved, state-of-the-art heat exchanger system provides the perfect balance of power and price.

Last-Step Chemical System

The Boxxer’s Last Step Chemical Injection System protect the unit’s exchangers from chemical damage and helps control chemical waste. The unit’s adjustable heat feature allows you to fine-tune your system from 160° to 240°F. The high-pressure pump is adjustable to 1000 PSI when tile and grout cleaning or pressure washing are on the schedule.

Smart Heat Control

If water damage restoration is part of your operation, you’ll find the standard equipment ADC™ Automatic Diverter Control a valuable feature. Unlike many units on the market, the Boxxer does not need to be connected to a water supply to do extended flood extraction work.

Another advantage of the Boxxer is the ability to clean upholstery in “divert mode.” Cleaning temperatures of 160°-240°F can be selected when you need lower heat for delicate fabrics.

Solid Power Plant

The unit’s 21 HP Briggs & Stratton TM Industrial Series engine is equipped with an external oil cooler for improved engine life. Engineered for stability and low chassis vibration, the unique design offers longer, trouble free component life.

Economical and Efficient

Using just over one gallon of fuel per hour, and having minimal maintenance costs, the Boxxer 421 is more economical to operate than many machines. Ready access to all service points allows for easy maintenance by the owner.

Revolutionary Blower Technology

The 4005 tri-lobe blower, developed exclusively for HydraMaster, provides increased displacement for high CFM, yet emits less noise than similar blowers. While other blowers use grease fittings, the 4005 employs a dual oil bath for greater unit life and less maintenance.

Superior Performance…The Boxxer is Hot!

HydraMaster engineers have done an incredible job of designing big-machine performance in a compact package, the Boxxer 421 literally out-performs much larger and more expensive machines. The vacuum produced by the direct coupled engine and blower equals, or exceeds, that of many machines with larger blowers. The heat system delivers impressive solution temperatures. And, thanks to the Smart Heat Control System, it will maintain those temperatures to provide even, consistent cleaning performance. It does all this and still dumps very little water into the recovery tank.