Skip to Main Content
Sam's Club
Sam's Club
All Departments
All Services
Customer reviews for PowerShot 4200 PSI at 4.0 GPM HONDA® GX390 with Industrial Triplex Pump Cold Water Professional Gas Pressure Washer for
PowerShot 4200 PSI at 4.0 GPM HONDA® GX390 with Industrial Triplex Pump Cold Water Professional Gas Pressure Washer
4.7 out of 5 stars
stars
645 ratings645 reviews
  1. 5 stars84% (541)
  2. 4 stars12% (77)
  3. 3 stars1% (8)
  4. 2 stars1% (4)
  5. 1 star2% (15)
Sort by |
Showing 1-10 of 645 reviews
Sep 21, 2026
Reviewer name: AnitaCHS123
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Excellent for gum removal on concrete!

We love our Simpson machine! Throughout the years I e worked with several models and they have never let me down! I love the fact that the can remove the old dried up gum from the school grounds without damaging the concrete! The size of the machine makes them extremely portable and easy to move too! Simpson is the brand for us!

Review from simpsoncleaning.com
Helpful?7AT7XV54Y2LL15224104831
Sep 16, 2026
Reviewer name: DTHservices
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great

Ah, perfecto. Entonces sería: I’ve had this pressure washer for 10 years, and it has worked really well. I bought another one because it’s honestly a great pressure washer! O más natural para una reseña: I’ve had this pressure washer for 10 years, and it has worked great. I just bought another one because it’s honestly that good. Highly recommended!

Review from simpsoncleaning.com
Helpful?7AT7XV54Y2LL15224104831
Jun 25, 2026
Reviewer name: Green Lion Services
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

What an amazing working machine

I just bought and used it in a family friend house. The power is amazing, and the easyness to set it up and work is instantly. I am very happy with the choice and the options to do the work, the manuals, instructions and videos on how to use very helpful.

Review from simpsoncleaning.com
Helpful?7AT7XV54Y2LL15224104831
Jun 27, 2026
Reviewer name: Mark P123
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Lots of power

[This review was collected as part of a promotion.] Excellent first impression. The Honda GX390 started easily, the machine feels extremely solid, and the 4.0 GPM flow is noticeably stronger than homeowner-grade pressure washers. Assembly was simple, and all components appear to be high quality. I purchased this for driveway cleaning and small business use, and it looks like it will be more than capable. Very happy with the purchase so far.

Review from simpsoncleaning.com
Helpful?7AT7XV54Y2LL15224104831
Jul 3, 2026
Reviewer name: Donnie8478
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Powerful

I bought the Simpson pressure because I wanted more cleaning power for my house siding, sidewalks and driveway. I previously had a 15 year old 3500 psi that the pump died. It didn’t cost much more to buy a new 4400 Simpson than a new pump. There is a world in the cleaning ability of the Simpson. I would highly recommend this pressure washer to anyone that has heavy duty cleaning Donnie Murphy

Review from simpsoncleaning.com
Helpful?7AT7XV54Y2LL15224104831
Jun 7, 2026
Reviewer name: Alan Burton
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

A rock solid pressure washer

[This review was collected as part of a promotion.] As soon as I unpacked my pressure washer it was obvious that it was constructed from quality materials. Everything about it looked solid and well built. I'm certain I will get years of service out of this machine with proper maintenance. It's everything I expected and more.

Review from simpsoncleaning.com
Helpful?7AT7XV54Y2LL15224104831
Jul 19, 2026
Reviewer name: bricks
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

pressure washing business

[This review was collected as part of a promotion.] This is one of the best pressure washer I have ever used so far. It is easy to set-up and to fix if need be. I am using it for an huge storefront job here soon, also for an HOA. Let me know if you if it hold up.

Review from simpsoncleaning.com
Helpful?7AT7XV54Y2LL15224104831
Jul 1, 2026
Reviewer name: Wando85
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great Pressure Washer!

Just bought Simpson Pressure Washer a week ago. Setup was simple, product arrived as advertised and started up with ease. Used for first time to clean a motorhome. Power was plentiful, nozzles worked great and results were great. Highly recommend this product and extremely satisfied with this purchase.

Review from simpsoncleaning.com
Helpful?7AT7XV54Y2LL15224104831
Sep 9, 2026
Reviewer name: Property Care Business
3 out of 5 stars
3 out of 5 stars review

Verified Purchase

Works great but .

It worked great for about a month. It's now in the shop because the exhaust was glowing red and it shot an 8 inch flame out of it when I last shut it off. Hopefully just a valve adjustment and I can get it back. Until then my business is at a standstill. It's been down a week so far and I'm worrying about paying my bills.

Review from simpsoncleaning.com
Helpful?7AT7XV54Y2LL15224104831
May 31, 2026
Reviewer name: Ben11
3 out of 5 stars
3 out of 5 stars review

Verified Purchase

CHEAP SPARK PLUG

Starting off I could not crank the washer.....After the tenth pull and it was still not firing...I took out the Spark Plug,,, I found that the GAP WAS CLOSED. so I set the gap and pulled again. Started to fire then back fired... Then no fire...Reset the plug... Cranked right up... Did a Great Job on cleaning concrete with the Whirie....Since then, I have replaced the plug..........For the cost of the machine,,,you CHEAPEDOUT on the spark plug......

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

Hello, Ben11. This certainly isn't normal & we appreciate you bringing the condition of the spark plug to our attention. We're glad you were able to resolve the issue & have since enjoyed a smooth performance. We will be sure to document your experience for our records - thanks for taking the time to review!