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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 1-10 of 402 reviews
May 3, 2026
ELIJAHRock
5 out of 5 stars review

Verified Purchase

Locked and Loaded

[This review was collected as part of a promotion.] Looks great! Works great. Was easy to assemble. Only assembly was basically the handle performs. Terrific

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
May 8, 2026
Zuma
5 out of 5 stars review

Verified Purchase

Handles any job.

The oversized wheels make maneuverability very easy. The unit supplies more than adequate power. Numerous nozzle tips makes any job possible. The Honda engine is backed by years of reliability. Wonderful product.

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
May 2, 2026
TL021324
5 out of 5 stars review

Verified Purchase

Monster pressure washer

Just bought this pressure wash a few days ago, wow what an amazing pressure washer this thing is a monster, easy set up, easy start, and easy operation. highly recommend

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

Verified Purchase

Easy to operate, good size,

I’ve been running a professional Pressure washing business for about 6years, and since I bought Simpson I never had troubles, Simpson is a good machine for home owners o for business. Highly recommend.

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
Apr 6, 2026
Brent501
5 out of 5 stars review

Verified Purchase

Highly recommend!!

Received Power Shot PS60843 pressure washer in a timely manner, used it to pressure wash my whole house. Cut the time in half from past years. I highly recommend this product.

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
Dec 13, 2025
Dave62
5 out of 5 stars review

Verified Purchase

Plenty of power!!!

It is coming on winter when I bought it. I brought it home, got it prepped and it started on the 2nd pull. Ran it for an hour, shut it down, and inspected everything. Everything checked out. Started it up again, (3 pulls this time. Ran gas stabilizer through it, shut it down, ran pump guard through the pump, put it in storage and covered it up. Spring will be the real test!!!

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
Apr 25, 2026
BigCountry
4 out of 5 stars review

Verified Purchase

Great machine!

The engine and pump are awesome the hose it comes with is lacking and leaves marks. The gun is lacking it works fine but feels a bit flimsy in the hand. The pressure rating is a bit high at 4gpm I have played with it I get 4gpm at around 3400psi. The packaging needs some support foam to keep from damage my unloader valve was bent upon arrival along with a couple dents in the fuel tank and heat shield. I use an external unloader valve and I dont mind a few dents. Thats the reasoning for 4 stars instead of 5.

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
Apr 8, 2026
BBrooks2026
4 out of 5 stars review

Verified Purchase

Nice Machine

[This review was collected as part of a promotion.] I bought this to replace my 3200psi Simpson pressure washer. This has plenty of power, and has a nice size gas tank so i am no refueling every half hour.

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
Apr 24, 2026
Mikey D
1 out of 5 stars review

Verified Purchase

Horrible

I just bought this pressure washer and I’ve been trying to get in touch with someone because it has multiple issues….. The chemical injector doesn’t work, the unloader valve cap/pressure regulator cap has popped off twice which isn’t supposed to happen. This product is supposed to be the best on the market and I can’t tell. Horrible experience.

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

Hello, Mikey D. This isn't the experience we strive for & we're sorry to hear about the condition of this unit. Try reaching out to our team directly at 877-362-4271 or email us at productsupport@simpsoncleaning.com, and we hope to determine how to get the issues with the injector & unloader valve resolved as quickly as we can. Thanks for sharing this valuable feedback & we hope to be speaking with you very soon!

May 2, 2026
Axle pin
1 out of 5 stars review

Verified Purchase

Axle.pin issue

Arrived with pin missing from the axle so the wheel now falls off. I now can't really use it at all. The axle pin is actually a dumb idea and has not stopped me dead in my tracks. Now I have to take time to call the manufacturer to get the part. Not happyat all.

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

Hello, Axle pin. This certainly isn't the experience we strive for, & we appreciate you alerting us to the missing pin. We look forward to getting this issue resolved so you can enjoy your machine as quickly as possible. Thanks for taking the time to share this feedback.