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Power Drives' compact DWS-120 PowerHouse is the rail industry's only model that plugs into a 120 outlet and only uses 5 amps so there is no need for rewiring. The PowerHouse 120 circulates heated water or coolant with an electric water pump and can maintain a temperature above 100F, even in the coldest weather to eliminate idling. Unlike other systems, the PowerHouse 120 has the smallest footprint in the industry for easy installation in any space. The PowerHouse 120 includes microprocessor controls to automatically start and stop the PowerHouse heater to avoid continuous running and minimize fuel consumption. Fully EPA Tier 4 emissions compliant, the PowerHouse is a SmartWay-Verified Technology that will save fuel, emissions and noise.