
Need a hot water pressure washer for trucks, equipment or facility cleaning? High PSI helps businesses in the Rockford area compare Alkota systems and choose a model for the job.
The series below use an electric motor to drive the pump and an oil-fired burner to heat the water. Compare water flow, pressure and electrical requirements before choosing a machine.
Choose a system for your cleaning needs
- Water flow: Gallons per minute (GPM) tells you how much water the machine delivers.
- Water pressure: Pounds per square inch (PSI) tells you the pressure rating.
- Power supply: Check the model’s voltage, phase and amperage requirements against your site.
- Work area: Allow room to move, operate and service the machine.
AX4 Series
The AX4 Series uses a belt-driven pump. Its wheeled frame lets you move the washer between work areas. Applications include fleet washing, equipment cleaning and routine industrial maintenance.
Compare the AX4 models below by GPM, PSI, motor requirements and weight.
216AX4 – Compact Electric Hot Water Pressure Washer
- 2.0 GPM / 1600 PSI
- 14” coil • 175,000 BTU
- 115V • 1 Phase • 20 Amp • 2.3 HP motor
- Weight: 420 lbs
311AX4 – Low-Pressure, High-Efficiency Cleaning System
- 3.0 GPM / 1100 PSI
- 14” coil • 175,000 BTU
- 115V • 1 Phase • 20 Amp • 2.3 HP motor
- Weight: 425 lbs
320AX4 – Mid-Range Industrial Pressure Washer
- 3.0 GPM / 2000 PSI
- 14” coil • 175,000 BTU
- 220V • 1 Phase • 20 Amp • 4 HP motor
- Weight: 420 lbs
420AX4 – High-Output Industrial Cleaning System
- 3.5 GPM / 2000 PSI
- 14” coil • 350,000 BTU
- 230V • 1 Phase • 30 Amp • 5 HP motor
- Weight: 470 lbs
X4 Series
The X4 Series combines an electric motor, belt-driven pump and oil-fired heater. It offers another option for fleet, equipment and facility cleaning.
Use the model specifications below to compare output and site requirements.
216X4 – Compact Electric Hot Water Pressure Washer
- 2.0 GPM / 1600 PSI
- 14” coil • 196,000 BTU
- 115V • 1 Phase • 20 Amp • 2.3 HP motor
- Weight: 535 lbs
311X4 – Efficient Low-Pressure Cleaning System
- 3.0 GPM / 1100 PSI
- 14” coil • 273,000 BTU
- 115V • 1 Phase • 20 Amp • 2.3 HP motor
- Weight: 535 lbs
320X4 – Mid-Range Industrial Pressure Washer
- 3.0 GPM / 2000 PSI
- 14” coil • 273,000 BTU
- 230V • 1 Phase • 20 Amp • 4 HP motor
- Weight: 535 lbs
330X4 – High-Performance Industrial Cleaning System
- 3.0 GPM / 3000 PSI
- 14” coil • 273,000 BTU
- 230V • 1 Phase • 30 Amp • 6 HP motor
- Weight: 555 lbs
420X4 – Mid-Range Industrial Pressure Washer
- 3.5 GPM / 2000 PSI
- 14” coil • 350,000 BTU
- 230V • 1 Phase • 30 Amp • 5 HP motor
- Weight: 545 lbs
423X4 – High-Flow Industrial Cleaning System
- 3.7 GPM / 2300 PSI
- 18” coil • 350,000 BTU
- 230V • 1 Phase • 30 Amp • 6 HP motor
- Weight: 665 lbs
425X4 – Versatile High-Pressure Washer
- 3.5 GPM / 2500 PSI
- 14” coil • 350,000 BTU
- 230V • 1 Phase • 30 Amp • 6 HP motor
- Weight: 575 lbs
430XM4 – High-Performance Cleaning System
- 3.6 GPM / 3000 PSI
- 14” coil • 350,000 BTU
- 230V • 1 Phase • 40 Amp • 8 HP motor
- Weight: 625 lbs
418X4 – High-Flow Low-Pressure Cleaning
- 4.0 GPM / 1800 PSI
- 18” coil • 350,000 BTU
- 230V • 1 Phase • 30 Amp • 5 HP motor
- Weight: 615 lbs
430X4 – Heavy-Duty Industrial Pressure Washer
- 4.0 GPM / 3000 PSI
- 18” coil • 350,000 BTU
- 230V • 1 Phase • 40 Amp • 8 HP motor
- Weight: 685 lbs
518X4 – High-Output Cleaning System
- 4.8 GPM / 1800 PSI
- 18” coil • 540,000 BTU
- 230V • 1 Phase • 30 Amp • 6 HP motor
- Weight: 665 lbs
523X4 – High-Flow, High-Pressure Washer
- 4.8 GPM / 2300 PSI
- 18” coil • 540,000 BTU
- 230V • 1 Phase • 40 Amp • 8 HP motor
- Weight: 725 lbs
530X4 – Maximum Performance Industrial System (3 Phase)
- 4.8 GPM / 3000 PSI
- 18” coil • 540,000 BTU
- 230V • 3 Phase • 30 Amp • 10 HP motor
- Weight: 745 lbs
530X4 – Maximum Performance (Single Phase Option)
- 4.8 GPM / 3000 PSI
- 18” coil • 540,000 BTU
- 230V • 1 Phase • 50 Amp • 10 HP motor
- Weight: 745 lbs
XH4 Series

The XH4 Series uses a belt-driven pump and an oil-fired heater. Available configurations cover a range of flow rates and pressure ratings.
Start with the cleaning task and your electrical supply. Then compare the models below.
216XH4 – Compact Industrial Pressure Washer
- 2.0 GPM / 1600 PSI
- 14” coil • 196,000 BTU
- 115V • 1 Phase • 20 Amp • 2.3 HP motor
- Weight: 535 lbs
311XH4 – Low-Pressure, High-Flow Cleaning System
- 3.0 GPM / 1100 PSI
- 14” coil • 273,000 BTU
- 115V • 1 Phase • 20 Amp • 2.3 HP motor
- Weight: 535 lbs
320XH4 – Mid-Range Industrial Pressure Washer
- 3.0 GPM / 2000 PSI
- 14” coil • 273,000 BTU
- 230V • 1 Phase • 20 Amp • 4 HP motor
- Weight: 535 lbs
324XH4 – High-Pressure Cleaning System
- 3.0 GPM / 2400 PSI
- 14” coil • 273,000 BTU
- 230V • 1 Phase • 30 Amp • 5 HP motor
- Weight: 545 lbs
330XH4 – Heavy-Duty Industrial Pressure Washer
- 3.0 GPM / 3000 PSI
- 14” coil • 273,000 BTU
- 230V • 1 Phase • 30 Amp • 6 HP motor
- Weight: 555 lbs
418XH4 – High-Flow Cleaning System
- 4.0 GPM / 1800 PSI
- 14” coil • 350,000 BTU
- 230V • 1 Phase • 30 Amp • 5 HP motor
- Weight: 615 lbs
420XH4 – Balanced Performance Pressure Washer
- 3.5 GPM / 2000 PSI
- 14” coil • 350,000 BTU
- 230V • 1 Phase • 30 Amp • 5 HP motor
- Weight: 545 lbs
425XH4 – High-Performance Cleaning System
- 3.5 GPM / 2500 PSI
- 14” coil • 350,000 BTU
- 230V • 1 Phase • 30 Amp • 6 HP motor
- Weight: 575 lbs
430XH4 – Maximum Power Industrial Pressure Washer
- 3.9 GPM / 3000 PSI
- 14” coil • 350,000 BTU
- 230V • 1 Phase • 40 Amp • 8 HP motor
- Weight: 685 lbs
XTREME options
Selected series offer XTREME versions with different components and finishes. Ask High PSI which features are included on the model in your quote.
Get help choosing an Alkota washer
Tell us what you clean, how often you clean it and what power is available. We can help you compare systems for your site.
Request an Alkota pressure washer quote or call 779-210-2778. Visit High PSI at 5283 Zenith Parkway, Loves Park, IL 61111.

