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Internet # 300912624

Model # ALH4240

Store SO SKU #1002251551

4200 PSI 4.0 GPM Gas Cold Water Pressure Washer with HONDA GX390 Engine

$1399.99
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  • HONDA® GX390 engine with a low oil shutdown feature
  • Reliable CAT PUMPS® triplex plunger pump
  • Steel-braided Monster Hose 3/8 in. x 50 ft.
  • View More Details
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Free & Easy Returns In Store or Online
Return this item within 30 days of purchase. Read Return Policy

Product Details

About This Product

Designed to meet the rigorous demands of the cleaning professional, the Simpson Aluminum Series frame is crafted of aircraft grade aluminum, making it lighter in weight than most steel frame pressure washer designs. Perfect for contractors who specialize in deck cleaning, wood restoration, paint preparation, graffiti removal and all other professional cleaning services. The Simpson Aluminum Series designed for optimum performance in the harshest environments.

Highlights

  • HONDA GX390 engine with low oil shutdown feature
  • Reliable CAT industrial triplex plunger pump
  • Monster hose 3/8 in. x 50 ft. kink and abrasion resistant hose with quick connect fittings and polyurethane outer jacket
  • Aircraft grade aluminum frame is lighter in weight than most steel frame designs
  • 13 in. premium tires for ease of maneuverability across various terrain
  • 5 quick connect nozzle tips: 0 degree , 15 degree , 25 degree , 40 degree and soap to use for a variety of cleaning applications
  • 3 Year limited commercial engine warranty : 5 Year limited pump warranty : 10 Year limited frame warranty : 90 Day limited accessory warranty
  • 31 in. lance
  • Unit Dimensions: L: 38" x W: 23.5" x H: 29"
  • Unit Weight: 133 lbs
  • The actual product may vary slightly from product images
  • **Does not ship to California**
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 300912624

Model # ALH4240

Store SO SKU #1002251551

Specifications

Dimensions: H 29 in, W 23.5 in, D 38 in

Dimensions

Assembled Depth (in.)

38 in

Assembled Height (in.)

29 in

Assembled Width (in.)

23.5 in

Hose length (in.)

600 in

Interior Hose Diameter (in.)

3/8 in

Wheel Diameter (in.)

13 in

Details

Assembly Required

No

Commercial / Residential

Commercial

Connection Type

3/8 in. Quick Connect Hose & Trigger Handle

Engine Displacement (cc)

389

Engine Make

Honda Engine

Engine Type

GX

Features

Abrasion Resistant, Adjustable pressure, Chemical/detergent injection, Interchangeable wand, Kink free hose, Quick connect tips

Fuel Tank Capacity (gal.)

1.6 gal

Gallons Per Minute

4.0

Hose Material

Steel

Included

Engine oil, Hose, Onboard storage, Wheels

Maximum Pressure (PSI)

4200

Nozzle Type

Multi-Pattern

Number of tips included

5

Power Type

Gas

Product Weight (lb.)

133 lb

Pump Brand

CAT

Pump Type

Triplex

Reconditioned

New

Returnable

30-Day

Start Type

Recoil Start

Suggested Use

Driveway, Paint Preparation, Siding

Water Temperature

Cold

Warranty / Certifications

Manufacturer Warranty

3 Year limited commercial engine warranty : 5 Year limited pump warranty : 10 Year limited frame warranty : 90 Day limited accessory warranty

Questions & Answers

139Questions
caret
Q:What is the pull ratio when using. a downstream injector? i have 150ft hose so i am not sure if that changes the ratio.
by|Jun 14, 2024
0 Answer
Answer This Question
caret
Q:I was told this pump has no external bypass meaning it will keep building pressure and potentially damage the pump if letting idle without pulling the trigger?
by|Jun 12, 2024
1 Answer
Answer This Question

A:  Hi, Bobby. This has an integrated unloader valve. It doesn't keep building pressure, but the water is circulating in the pump head and will heat to above 140 degrees in 2 to 3 minutes which will cause damage to the internal components - thus the need to engage the trigger. We appreciate the question & hope this helps!

by|Jun 12, 2024
    caret
    Q:What gasoline to use
    by|Jun 3, 2024
    1 Answer
    Answer This Question

    A:  Thanks for the question, Tony. This takes any unleaded gas with an octane of 86 or above. Hope this helps!

    by|Jun 4, 2024
      caret
      Q:Model # ALH4240 how many horsepower
      by|May 30, 2024
      1 Answer
      Answer This Question

      A:  This would be 14 HP. Thanks for the question, Eduardo!

      by|Jun 3, 2024
        Showing 1-4 of 139

        Customer Reviews

        4.3 out of 5

        • 4.3 out of 653 reviews
        • 86% recommend this product
        Filter by:
        Showing 1-10 of 653 reviews
        two sent and both damaged in the same spot
        Just received my replacement Simpson 4200 PSI 4.0 GPM gas cold water Pressure washer. Top of the box smashed in exactly like the first one and fuel tank crinkled in just like the first one. First one delivered to store and marked “inspected”. Box was a mess but i believed the employees that it was ok. Fuel tank top mashed in. Sent it back and waited almost 3 more weeks for replacement. A private carrier delivered it to the house. Box smashed in at the exact same spot as the first one and fuel tank mashed in the same way. Now i need to send this one back. People had one job, “don’t-smash the box”, and i guess that is not possible these days. Item going back and not sure i EVER want to do business with Home Depot from here on out
        by
        Response from SIMPSON TeamJun 10, 2024
        Hi, Stevo. We are truly sorry to hear about the shipping issues you describe and appreciate you sharing this experience. We hope you are soon able to get your hands on a unit in mint condition. Thanks for reviewing & please don't hesitate to contact our team at 877-362-4271 or email us at productsupport@simpsoncleaning.com if we can assist you! simpson
          • Recommended
          I recently upgraded from my Simpson GS190 and this model is far better. Plenty of power and a much easier start. The only downside is the hose that comes with it is too stiff and constantly gets tangled, so make sure to buy a better hose.
          by
          Response from SIMPSON TeamJun 10, 2024
          It's great to hear you've enjoyed the performance of your 4200 PSI pressure washer, & it's delivering just the power upgrade you needed. We hope you are soon accustomed to the hose, and we will be sure to document that feedback for our team. You can share photos of your results any time by tagging #simpsonclean on social media and we'd love to see the projects you're knocking out. Thanks for the review, HomeDepotCustomer! simpson
          • Verified Purchase
          The pressure washer arrived with a large hole in the box and it appeared the box had been opened and a very haphazard attempt was made to reseal it. The HD customer service rep said boxes can be damaged during shipping, but I should open it and inspect the contents for damage. There was minor scuffing of the spray gun and the high-pressure hose had the wrong type fittings on both ends. It was not possible to test the pressure washer without the proper hose. I returned the pressure washer to HD and tried to order another pressure washer but was told it is now out of stock.
          by
          Response from SIMPSON TeamMay 30, 2024
          We are truly sorry to hear about these shipping issues, HomeDepotCustomer. If you would try contacting our team directly at 877-362-4271 or email us at productsupport@simpsoncleaning.com we hope to assist you in getting just what you need. We will be recording this experience for our team & truly appreciate your feedback. Thanks for reviewing and we hope to hear from you soon! simpson
          • Verified Purchase
          Stuck With A Damaged Washer
          So this is the deal. Most excellent washer. Unfortunately the washer was delivered with two points of damage. The box it was delivered in was in perfect shape, this was NOT a shipping and handling issue. This washer came this way from Simpson. I'm guessing the QC guy was on vacation of drinking a bit too much on the day this left the warehouse. I've noticed others have had this issue also. The tank was dented and the wand was cracked. Again, this is NOT a shipping and handling issue, the box was fine. Unfortunately for me I had to use the washer immediately. We're a non profit wildlife rehab here in Michigan and cages/pens need to be cleaned. I can't wait another week for another washer to be delivered. If you're counting on getting a pristine washer from Simpson, lower your expectations.
          by
          Response from SIMPSON TeamMay 22, 2024
          We really appreciate you alerting us to this experience, and we will be looking into the matter to determine where along the line this could have happened. If you suspect performance was affected in any way, please don't hesitate to give our team a call directly at 877-362-4271 or email us at productsupport@simpsoncleaning.com and we will be happy to assist you in any way we can. We hope you enjoy the performance of your unit moving forward. Thank you for reviewing TheDetroitScanner! simpson
            • Recommended
            Terrible Shipping and Handling
            I just got home with my second one of these, I have not had the opportunity to use this pressure washer yet, hopefully that will be a better experience. I ordered the first one online with home delivery. We live 110 miles one way from the nearest Home Depot. The first one I ordered arrived 14 days after it was ordered. The bottom of the box was open because the pressure washer had fell through it and so it was delivered upside down. The gas tank was badly crushed with sharp creases in it to where I thought it would probably leak, the muffler was also bent and damaged. I loaded it up and returned it to Home Depot. At the store I ordered another one to be delivered to the store for pick-up by me. Today a week later, I drove back to the store to pick the second one up, because the box looked to be in good shape I did not open and inspect it at the store. Unpacking it at home, I discovered it had turned over on its side in the box and also had a dented gas tank, though not as bad as the first one. I have now drove about 450 miles because of my two 220 round trips to the store and am temped to take this one back for refund and give up on owning this model.
            by
            Response from SIMPSON TeamMay 14, 2024
            We are very sorry to hear about the shipping damage & return hassles, George. We truly hope you are able to get your hands on a unit in perfect condition as we are confident you will enjoy its performance. We document all customer feedback for our records and appreciate you taking the time to review! simpson
              • Recommended
              3 found this review helpful
              Best pressure washer I’ve owned
              I love my Simpson had it a year use it a lot things been bulletproof for me  Plenty of pressure great Honda motor great rebuildable cat pimp great warranty
              by
              Response from Simpson TeamApr 18, 2024
              Thanks for the thoughtful, review, Jsea. It's great to hear every aspect of your Honda-powered 3400 PSI pressure washer has delivered a stellar cleaning experience for you. You can tag #simpsonclean on social media any time to show off your results, and we'd love to see your before/after photos. We really appreciate the feedback!
                • Recommended
                RUSTING AWAY FIRST DAY
                NOT QUALITY, TWO DAYS STARTING TO RUST, WONT BE LONG UNTIL THE HANDLE RUSTS OFF IN YOUR HAND, IT IS TRULY ASHAMED THAT COMPANIES LIKE SIMPSON CHEAP OUT ON SUCH LOW COST ITEMS. ALL THEY HAD TO DO WAS USE STAINLESS BOLTS AND MAKE THE HANDLE OUT OF ALUMINUM. CHEAP CRAPPY PRODUCT. SEE PIC, ALL FOUR BOLS AND HANDLE RUSTING
                by
                Response from SIMPSON TeamAug 8, 2023
                We're sorry to hear about the condition of this particular unit. This certainly is not what we expect to hear, and all customer feedback is valuable to us. Please don't hesitate to contact our team any time at 877-362-4271 or email us at productsupport@simpsoncleaning.com if ever you have any questions or concerns about your unit, and we are always happy to explore solutions. We appreciate you taking the time to share your experience. simpson
                  Not impressed
                  Machine arrived with oil in engine. Handle was difficult to install. Screw fell out on deck that holds pressure fittings. Engine backfires.
                  by
                  Response from SIMPSON TeamJul 17, 2023
                  Hi, Detroitchris1. All our machines are line-tested to ensure performance, and it's normal for the engine to contain a small amount of residual oil from the process. Beyond that, we would be happy to see if we can't do a bit of troubleshooting to get you operating more smoothly. If you would reach out to our team at 877-362-4271 or email us at productsupport@simpsoncleaning.com we would be glad to explore options to improve your experience. Thanks for taking the time to share your feedback! simpson
                    ng
                    Pump fills with water, and leaks oil on to my patio and driveway. Unloaded valve hardly works, have to squeeze trigger to start it and it stalls if you try to idle the engine down. I bought this one because of the cat pump and it has let me down. Less than a year old. Talked to the repair shop Simpson directed me to and they said don’t bother bringing it to them.
                    by
                    Response from MarketingMay 29, 2023
                    We are sorry for this disappointing experience, Michael O. This is not the performance we expect at all, and we will be documenting your experience to pass along to our team. Please stay in touch with our team directly at 877-362-4271 or email us at productsupport@simpsoncleaning.com and we can help you locate another service center or explore other options to improve your experience. We appreciate your feedback and hope you will keep us updated.
                      Simpson ALH4240 good machine
                      Great powerful machine. Did have One small issue that northern tool service center(Mike), and Don H. from Simpson, took care of for me and Simpson warrantied it. Which I appreciate, it's a great machine. I suspect it will last years and years with good regular maintenance.
                      by
                      Response from MarketingMar 17, 2023
                      Thanks, Cashen. We are so glad to hear support was helpful in getting the kinks worked out quickly and you have been impressed with the quality & performance of your 4200 PSI pressure washer. Show off your work any time by tagging #simpsonclean on social media with your before/after photos and we would love to see the results you achieve. Thanks for sharing your experience & enjoy your machine!
                        • Recommended
                        Showing 1-10 of 653 reviews

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                        Driveway, Paint Preparation, Siding

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