DeWalt 4200 PSI Pressure Washer Review

Editor choice DeWalt 4200 PSI Pressure Washer Review


Best deal at:
DeWalt 4200 PSI Pressure Washer Review
DeWalt 4200 PSI Pressure Washer Review
  • Especially effective at cleaning.
  • Very effective at removing stains.
  • Wide cleaning angle.
  • Very high pressure (PSI).
  • Very high flow (GPM).
  • Easy to operate its controls, move it, store it.
SaveSavedRemoved 0

DeWalt 4200 PSI Pressure Washer Review

  • 4,200 PSI 4 GPM DeWalt DXPW4240 Gas Pressure Washer
  • Direct drive engine and pump for streamlined power transmission from engine to pump
  • Honda GX commercial series engine starts easy, runs smoothly, and delivers high output
  • Triplex pump design with ceramic pistons and thermal relief valve
  • Adjustable unloader system offers full range of pressure settings for added control and versatility
  • Welded construction
  • 1 1/4-in tubular steel with steel engine plate and solid steel 5/8-in axle
  • Premium pneumatic tires
  • 3/8-in x 50-ft Non-marring hose with quick connectors for no-tool assembly
  • Downstream detergent injection system

DeWalt DXPW4240 Specifications:

  • Pressure rating: 4,200 PSI
  • Flow rate: 4 GPM
  • Engine series: Honda GX390 OHV
  • Engine displacement: 389cc
  • Engine torque: 19.5 ft-lb
  • Fuel capacity: 1.6-gal
  • Recommended engine oil: 10W-30
  • Engine oil capacity: 1.16-oz
  • Start type: Manual


  •  0° quick-connect nozzle
  •  15° quick-connect nozzle
  •  25° quick-connect nozzle
  •  40° quick-connect nozzle
  •  Soap applicator quick-connect nozzle


Materials:Plastic Hose, Rubber Wheels
Warranty:3 Year Limited on Engine, 2 Year Limited on Pump, 1 Year Limited on Frame


Dimensions & Weights

Width:24 inches
Wheel Diameter:13 inches
Length:3 feet 2 inches
Hose Length:50 feet
Hose Diameter:0.375 inches
Height:28 inches


(Note: Because of the greater risk of injury, we recommend no pressure washer that comes with a zero-degree replaceable nozzle or setting, no matter how well it cleans.)

DeWalt 4200 PSI Pressure Washer Review

Easy to operate its controls, move it, store it. Easy hose storage. Wand very easy to remove and use. Easy to use and read on-off switch.

Has low oil shut off. Replaceable nozzle tips. Has manual trigger lock. Has pressure control. Soap hose. Requires storage of gasoline.

Includes 4,200 PSI 4.0 GPM Gas Pressure Washer with Honda Engine – DXPW4240, 50-ft x 3/8-in High Pressure Hose, Steel Wand with Quick Connect, (5) Quick Connect Nozzles (0 Degree, 15 Degree, 25 Degree, 40 Degree, Detergent)
The motor is easy to start, quieter, and per same job uses less fuel than other 2500 psi pressure washers. This Dewalt unit takes more effort to handle however, and the pressure to keep the trigger squeezed can be fatiquing which requires me to move back and forth from one hand to the other fairly frequently.
This DeWalt Pressure Washer can complete the task in an hour using far less water in the process by evidence of pooling run-off and it does a better job.
This pressure washer is build tough to handle the rigors of trade demands. It has the Honda GX360 Commercial Series OHV engine with Oil Alert and an industrial pump. Welded steel construction with 13″ premium pneumatic tires so it takes the abuse of long commercial in service cycles. We could not find any other competitors units with commercial components for this low price under $1500.

DeWalt 4200 PSI Pressure Washer has plenty of power to blast mildew and dirt off siding and walkways, as well as prepping decks for stain or paint. The frame is high quality and not cheap materials. It’s a little on the heavy side for being a portable unit, so you have to use ramps on your pickup to get it into the truck by yourself.

It takes some strength to pull the cable and in case it doesn’t start on the first pull, you have to bleed the pressure from the wand in order to continue pulling otherwise the starting rope doesn’t let you pull against the back pressure. For only $1000 the pressure is great and will cut the amount of time working significantly over a lesser unit. A full gas tank will give you almost 2 full hours at highest pressure. Make sure you have the supply wide open when using.


DeWalt 4200 PSI Pressure Washer Review

The DeWalt DXPW4240 is part of the Pressure washer test program. In our lab tests, Pressure washer models like the DeWalt DXPW4240 are rated on multiple criteria, such as those listed below.

Cleaning: Versatility and efficiency in cleaning a range of surfaces. The better performers have multiple spray patterns that can cover various cleaning chores, from light, superficial cleaning to deep cleaning of concrete, decking, and other hard-to-clean surfaces.

Power: A combination of pressure, measured in pounds per square inch (psi), and flow, measured in gallons per minute (gpm). Higher pressure results in better cleaning of a given surface; coupled with a higher flow as well, you’ll get the job done the fastest.

Noise: A combination of measurements, based on dBA, reflecting the proximity of the operator to the pressure washer. While our Noise score averages measurements taken close by the machine and at the end of the hose’s typical reach, we strongly strongly recommend hearing protection for working close by a gas powered pressure washer in particular.

DeWalt 4200 PSI Pressure Washer Deals

DeWalt 4200 PSI Pressure Washer Specs

Weight (lb.)                                            75

Pressure range (psi)                             4200

Flow rate (gpm)                                     4.0

Engine size                                            390 cc

Cord length (ft)                                      

Horse (ft)                                                50

Handle (in.)                                           32

Temperature range (F)                        N/A

Warranty (mos.)                                    36

Pump protection                                  N/A

DeWalt 4200 PSI Pressure Washer Review

8.9 Total Score
Very Good!

This pressure washer from DeWalt is gas-powered and claims 3400 psi max with 2.5 gpm. It comes with five nozzle tips, pneumatic wheels, and the cleaning tip is replaceable. It weighs 73 lbs.

Ease of use
  • Especially effective at cleaning.
  • Very effective at removing stains.
  • Wide cleaning angle.
  • Very high pressure (PSI).
  • Very high flow (GPM).
  • Easy to operate its controls, move it, store it.
  • Relatively loud.
  • Very noisy when close to unit.
  • Unit always on (generates noise and may overheat).
Add your review  |  Read reviews and comments
We will be happy to hear your thoughts

      Leave a reply

      Your total score