Simpson Pro Series Pressure Washers

Simpson Pro Series Pressure Washers

We’ve been testing Simpson pressure washers for years and have come to appreciate their quality and value. As one the largest, most vertically integrated gas-powered pressure washer manufacturers in North American, they’re getting even better with new Simpson Pro series pressure washers.


Simpson has been serving professionals for a long time, so the Pro series isn’t a new category for them. However, there are some differences that make this line incredibly compelling.

One of the things that impresses me about the line is that all the manufacturing is directly under Simpson’s control. The FNA group that makes Simpson pressure washers also manufactures their CRX engines, AAA pumps, hoses, and even the frame itself. Sweetening the deal, these units are designed, engineered, and manufactured in the USA.

CRX Engines

CRX Commercial Engine

Starting with the powerplant, the CRX engines are designed for heavy-duty professional use. It has all the key features Pros looks for, including easy starting, reliable performance, and a low oil engine shutdown. The team that developed the CRX engine is so confident in its long-term reliability that it includes a 5-year warranty—the best in the industry and two years longer than what Honda offers.

These engines aren’t just for pressure washers, though. There are also generators, semi-trash pumps, and chemical pumps that come with CRX engines. Plus, they’re an excellent option when it’s time to repower other equipment.

AAA Professional Pumps

AAA Triplex Professional Pump

Shifting gears to the pump, the AAA pumps featured on the Pro series are built for heavy-duty professional use. It’s a claim they back with a 5-year pump warranty. These pumps undergo CETA CPC-100 certification testing for pressure and flow, giving us a tremendous amount of confidence that the ratings Simpson gives are what we’ll experience in the field.

Simpson Pro Series Pressure Washers

Putting it all together, Simpson Pro pressure washers are available in three configurations ranging from 3500 – 4000 PSI and 2.5 – 3.5 GPM. Out of the box, assembly is easy. You only need to attach the handle, assemble the wand, and add fuel and oil. In about 10 minutes, you’re ready to get to work.

Here are the available models:

PS61374

Simpson Pro Series 3500 PSI Pressure Washer
  • CRX 210 engine
  • AAA Pro axial cam pump
  • 3500 PSI
  • 2.5 GPM
  • MorFlex 5/16-inch x 50-foot hose
  • Includes 0°, 15°, 25°, 40°, and soap nozzles
  • Steel frame construction with a powder coated finish
  • 10-inch pneumatic tires
  • 68 pounds (dry weight)
  • $579

PS61370

Simpson Pro Series 3700 PSI Pressure Washer
  • CRX 225 engine
  • AAA triplex pump
  • 3700 PSI
  • 2.5 GPM
  • MorFlex 5/16-inch x 50-foot hose
  • Includes 0°, 15°, 25°, 40°, and soap nozzles
  • Steel frame construction with a powder coated finish
  • 10-inch pneumatic tires
  • 79 pounds (dry weight)
  • $699

PS61371

Simpson Pro Series 4000 PSI Pressure Washer
  • CRX 340 engine
  • AAA triplex pump
  • 4000 PSI
  • 3.5 GPM
  • MorFlex 3/8-inch x 50-foot hose
  • Includes 0°, 15°, 25°, 40°, and soap nozzles
  • Ergonomic 360° rotating spray gun
  • Steel frame construction with a powder coated finish
  • 13-inch pneumatic tires
  • 130 pounds (dry weight)
  • $799

You can find Simpson Pro pressure washers exclusively at Lowe’s. In addition to the 5-year warranties on the engines and pumps, the frame also carries a 10-year warranty.

Each pressure washer comes paired with an industry-leading polyurethane high-pressure hose that’s non-marring, three times more abrasion resistant than rubber hoses, and manufactured in the USA. You also get a range of nozzles and an ergonomically designed spray gun.

If you’re looking for a professional-grade pressure washer that has the performance and reliability you need combined with high value, look no further than Simpson’s Pro series pressure washers driven by CRX engines and AAA professional pumps.

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