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Customer reviews for PowerShot PS4240 49-State 4200 PSI at 4.0 GPM HONDA® GX390 with Industrial Triplex Pump Cold Water Professional Gas Pressure Washer for
PowerShot PS4240 49-State 4200 PSI at 4.0 GPM HONDA® GX390 with Industrial Triplex Pump Cold Water Professional Gas Pressure Washer
4.7 out of 5 stars
stars490 ratings490 reviews
  1. 5 stars82% (403)
  2. 4 stars13% (64)
  3. 3 stars1% (6)
  4. 2 stars1% (3)
  5. 1 star3% (14)
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Showing 471-480 of 490 reviews
Sep 29, 2025
Anonymous
1 out of 5 stars review

Just purchased today 9-29-2025.

[This review was collected as part of a promotion.] Just purchased as of today 9-29-2025. To be reviewed later..

Review from simpsoncleaning.com
Helpful?7AT7XV54Y2LL15224104831
reply from Simpson Team

We look forward to the update, Ron Cooper! Enjoy that machine!

Apr 22, 2018
KeithGB
5 out of 5 stars review

Powerful!

I bought this on April 17, 2018 and very glad I did! I've used it only once for a couple hours on my sidewalk and driveway and man does it have power and do an awesome job in a short time!!! All my neighbors are wanting to hire me and my new toy out! Lol

Review from simpsoncleaning.com
Helpful?7AT7XV54Y2LL15224104831
Oct 23, 2019
PaulieG
5 out of 5 stars review

No problems after 20 hour run time.

Bought this unit 2 months ago. I’ve had no problems with it after 10 jobs. Plenty of power! A quick squirt of the wand releases line pressure to pull start. If it doesn’t start on first pull, release line pressure again. When starting, don’t put your foot on air stem of tire, it will break.

Review from simpsoncleaning.com
Helpful?7AT7XV54Y2LL15224104831
reply from Customer Service

Thank you for your feedback, we appreciate it! - SIMPSON Team

Apr 14, 2018
Kyle3
5 out of 5 stars review

Excellent product

This is my first pressure washer and I decided to get this particular one because it offered commercial quality at a reasonable price. This is built so well, it will be the first and last pressure washer I will need to buy. It was very gratifying to clean the filthy sidewalk in my front yard with this machine.

Review from simpsoncleaning.com
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Jul 7, 2020
ciro
4 out of 5 stars review

Great machine with a couple of flaws.

I've had this machine for only a week and only 1 hour and 20 minutes of run time on the hourmeter I installed, so this review is only an initial assessment. The machine is a beast and not for the frail, it's heavy, the monster hose needs to be rolled, not lassoed, and the recoil from the pressure is a good 30 pounds, so be prepared to get a good workout in. Otherwise, besides it's few flaws, I love it. I ran it at 2750 rpms on the first use to break it in and really, that's more pressure and volume than most other machines put out at full power, and at that rpm the engine sounds like it's just cruising along rather than screaming. The one major flaw is the pressure release valve installed on the pump, when you shut the machine down it sometimes squirts cold water on a very hot engine resulting in a cloud of steam and the engine complaining with all sorts of crackling sounds from the sudden and unequal contraction on one side of the cylinder wall. I solved the flaw with a rubber elbow and a stainless hose clamp, something Simpson could do for pennies. The other issue is the grab handle that goes over the engine, it doesn't fit squarely against the other handle and I had to leave it off.

Review from simpsoncleaning.com
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Oct 29, 2017
JimBob
5 out of 5 stars review

Perfect for the Shop

To date this is my second Simpson machine in a year. The first one I bought was for my home and after how great it worked I decided to buy another unit for my business. I own a small car repair and oil change shop. I wanted something that had plenty of power to help get rid of oil stains but also didn't break my bank seeing as that I am a small business. Simpson created the perfect model on this one. Tons and I mean tons of power and at the most competitive price in the market. I only use it about once or twice a week for an hour or so but its been perfect. 2 Simpson pressure washers in and I love the product and the brand.

Review from simpsoncleaning.com
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Mar 29, 2019
Landscapepro
5 out of 5 stars review

1 year review

I got this as a residential model for cleaning bare concrete. It’s beyond powerful enough. For the price, you will not find more cleaning power. If your looking for a washer to regularly use on a car, I would suggest something with less power, this has taken small bits of paint off of my car.

Review from simpsoncleaning.com
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Sep 21, 2025
PWasher
1 out of 5 stars review

Doesn’t work

Started smoking on first use and now won’t turn on.

Review from simpsoncleaning.com
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reply from Simpson Team

Hi, PWasher- This is not what we expect at all! Will you please give us a call or email our support center at your earliest convenience? We'll do some troubleshooting and see about getting you fixed up. 877.362.4271 / productsupport@simpsoncleaning.com

Aug 7, 2025
Kidd187
5 out of 5 stars review

Great features

Good pressure washer. Just bought a couple days ago and used it and so far it gets the job done.

Review from simpsoncleaning.com
Helpful?7AT7XV54Y2LL15224104831
reply from Simpson Team

It's good to hear your 4200 PSI pressure washer has been powering away to tackle your jobs with ease. Feel free to tag #simpsonclean on social media any time & we'd love to see photos of your results. Thanks for sharing your feedback, Kidd187!

Aug 14, 2025
Simpson power review
5 out of 5 stars review

Powerwasher

I am very excited to use my new powerwasher i have alot of equipment to wash with it.

Review from simpsoncleaning.com
Helpful?7AT7XV54Y2LL15224104831
reply from Simpson Team

We're glad to hear your 4400 PSI pressure washer has already made a great first impression. You'll have to tag #simpsonclean on social media once you fire it up & we'd love to see any before/after photos of your equipment! We're excited for you to start enjoying the impressive power & we appreciate the rating!