EC99S 4-Gallon Portable Electric Twin Stack Air Compressor

  • Model# EC99S
Discontinued Tool
Discontinued Tool

The EC99S Twin Stack Compressor features an oil-lubricated cast iron pump and 15 Amp direct drive induction motor for longer life. The motor is protected by a thermal overload protection that stops the motor in a possible overheating situation. Weighing just 52.9 lbs, the EC99S has an ergonomic carrying handle to make it easier to transport to any jobsite. A universal quick coupler and steel encased industrial gauges are factory installed on the unit so it is ready to go out of the box. 


  • Covered by Hitachi's professional 1-year warranty
  • Motor thermal overload protection stops the motor in a possible overheating situation 
  • Cast iron, oil-lubricated pump for cooler operation and greater longevity
  • 15 Amp direct drive induction motor delivers efficient and reliable performance        
  • Locking regulator ensures the proper pressure is delivered to your tool
  • Industrial air pressure gauges, encased in steel, for higher durability
  • 105 On/135 Off pressure switch for less cycling
  • Universal quick coupler for fast tool changes
  • Lightweight and portable for easy jobsite transport
  • Ball valve drain cock for quick and simple tank draining    
  • Download the EC99S Tool Card


  • Synthetic Oil SAE15W40 (115337)
  • Oil Dipstick (881469)