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Customer reviews for SIMPSON PowerShot 4400 PSI at 4.0 GPM SIMPSON 420cc Gas Pressure Washer for
SIMPSON PowerShot 4400 PSI at 4.0 GPM SIMPSON 420cc Gas Pressure Washer
4.6 out of 5 stars
stars416 ratings402 reviews
  1. 5 stars81% (336)
  2. 4 stars13% (53)
  3. 3 stars1% (6)
  4. 2 stars1% (3)
  5. 1 star4% (18)

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Showing 381-390 of 402 reviews
Dec 5, 2025
DDKMc
5 out of 5 stars review

Nice and heavy duty

I think this machine will be just fine. Nice and heavy duty.

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
Dec 29, 2025
Qlake
5 out of 5 stars review

Super Powerful

This is a very powerful power washer and I highly recommend it.

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
Nov 10, 2025
Clem1982
5 out of 5 stars review

Works great

I bought this power washer about a week ago and so far it has been working great

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
reply from Simpson Team

It's great to hear you've enjoyed an excellent performance from your new 4200 PSI pressure washer, Clem1982. Show it off any time by tagging #simpsonclean on social media with your before/after photos & we'd love to see it at work. Thanks for the positive feedback!

Dec 1, 2025
Lucas
5 out of 5 stars review

Great power

Excellent power good presure I will recommend to my friends and family

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
Oct 21, 2025
Juan B.
4 out of 5 stars review

Look very strong and very compact

I hear good things about the product and I needed to try it for my self

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
reply from Simpson Team

We're glad to hear you've been pleased with the rugged quality & compact design, and we're confident your 4200 PSI pressure washer will deliver a powerful performance worthy of its reputation. You can show off your work any time by tagging #simpsonclean on social media & we'd love to see the results you achieve on your projects. Enjoy your machine, Juan B!

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
Helpful?4LDY3BT2CMUR13758761122
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
Helpful?4LDY3BT2CMUR13758761122
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?4LDY3BT2CMUR13758761122
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?4LDY3BT2CMUR13758761122
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
Helpful?4LDY3BT2CMUR13758761122