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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 131-140 of 402 reviews
Aug 28, 2018
Proclean
3 out of 5 stars review

Verified Purchase

A lot of power

Bought this last month. Good power. Big tires make it easy to maneuver. Had a flat after 1st use. Company sent one out pronto. Wish the pump could run without having to shoot the gun every 2 min. That’s a hassle

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
May 5, 2019
Fishon49er
5 out of 5 stars review

Verified Purchase

Great power

I brought this to pressure wash my driveway. Did a great job on my pavers. Lots of power you have to really hold one when you hit the trigger. I love the way you change the nozzles on this .

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
May 5, 2026
Danieldemee
5 out of 5 stars review

Solid and powerful

Bought this to start a pressure washing business. It might be overkill for your personal drive way, but for commercial work it does a good and effective job.

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
Jul 9, 2020
Bill 1950
5 out of 5 stars review

Verified Purchase

Pressure washer

Bought this approx one month ago and have power washed my house and about 150 feet of wooden fence. I'm a home owner not a contractor I'm very pleased with this product and would highly recommend this to a family member or friend or anyone!!!

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
Jul 9, 2018
JBurton
5 out of 5 stars review

Verified Purchase

Great!

I have had this product for about a month. I really enjoy using it. I bought a 2nd story soap nozzle to use with it and haven’t had any problems reaching the 2nd story of my house and other houses that I’ve pressure washed.

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
May 1, 2026
Mark5138
5 out of 5 stars review

Great Machine

This pressure washer is great, my old one was only 210 cc 2.6 gpm and you can really tell the difference with a 4 gpm machine. It is built really well and am very happy with it's performance.

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
May 7, 2026
Ciante
5 out of 5 stars review

Smooth and Strong

I previously came from a CRX engine to now my ne Honda engine. The power is smooth and consistent. It is way easier to start than my previous machine. I love it!

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
Mar 5, 2026
JamesTN
5 out of 5 stars review

Great Machine

This pressure washer will be everything you need to start pressure-washing services. Strong engine, high gpm, and pressure make this thing perfect, and you can use attachments that smaller pressure washers can't. For the price, it's perfect, not to mention it came with the oil and the hose to run soap.

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

Thanks for the kind words, JamesTN. We are happy to hear your Simpson pressure washer has delivered a stellar cleaning experience. We appreciate the review!

Jan 19, 2026
Robert 225
4 out of 5 stars review

Lots of power

The first time I used this unit, oil began leaking from the pump. Tractor Supply stepped up and promptly replaced it with a new one. I have since used the new unit for approximately 10 hours total with no problems. I mostly use it attached to a 20" surface cleaner. I wouldn't go any larger than that. The only draw back is the filter at the bottom of the fuel tank is long and points straight up. So, while the tank has a little fuel in it, it will stop running. It's not a big deal. You just have to understand how it works. I would recommend it to anyone wanting a powerful pressure washer. I did add on a quick connect pressure guage, and it does put out 4400 psi. I dialed it back just a little under that. The only reason for the 4 stars is because of the pump leaking and the way the fuel filter is designed. Just fill it with ethanol free fuel so you don't have to worry about ethanol issues and you'll be fine. I only noticed the filter characteristic in the unit because I tried to put just a little fuel in it to test it out. I simply wasn't putting in enough. Also, people tend to skip the 5 star reviews to see what potential issues there are. Glad I bought it. Great price. Not a Honda engine, but the price is also lower because of that. At this time it has the most power for the money.

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

We're glad your replacement has performed flawlessly & will be sure to document your design feedback for our team, Robert225. Beyond that we are happy to hear you've enjoyed a powerful performance from your new Simpson pressure washer. Thanks for taking the time to share your experience!

Feb 9, 2026
Cme2zz
5 out of 5 stars review

Great product for the price

I’m very happy with this Simpson 4400 PSI pressure washer. It starts up easily, even for a gas unit, and delivers strong cleaning power for tough jobs like concrete, driveways, and equipment cleaning. The included accessories and good instructions made setup straightforward. The price was excellent for the performance and specs. The AAA triplex pump works well when maintained and gives reliable pressure. Overall, a great value and powerful washer that’s easy to use and worth the money!

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

Thanks for such thoughtful feedback, Cme2zz. We are happy to hear your 4400 PSI pressure washer has delivered ample power & performed for a five-star cleaning experience. You can show off your work any time by tagging #simpsonclean on social media & we'd love to see any before/after photos. We appreciate you taking the time to review!