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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 61-70 of 402 reviews
Jul 3, 2019
TrackRat
5 out of 5 stars review

Verified Purchase

So far gppd

This machine is more expensive than the one it replaces but has some better features like a chrome or maybe it's SS gas cap. My old machine had a cheap carbon steel one that rusted very soon after purchase. This one runs well I just hope the pump doesn't explode like my last one.

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
Apr 26, 2026
Willywashn
5 out of 5 stars review

Better than expected

Bought this to replace a belt drive that was about 15 years old, wasn’t expecting near the power that the belt drive had but this unit has surprised me. The old unit was 4000 psi 4 gpm and this one’s 4400 psi. 4gpm. I have a large patio and lots of driveway to wash and this machine pushes my 20” surface cleaner great! Very impressed

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
May 16, 2020
Pressured4400
4 out of 5 stars review

Verified Purchase

Powerful

This 4400 psi unit has incredible power. After about 4 uses, something inside the spray gun failed causing it to spray continuously even when the trigger wasn’t being pulled. It was still within the 90 day accessory warranty, so they quickly sent out a replacement (I had it within 3 days of calling). I only wish the accessory warranty was a bit longer. Had this happened just two weeks further out, it would have technically been out of warranty.

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
Nov 2, 2017
XwhodeyX
5 out of 5 stars review

Verified Purchase

So Far , So Good!

I have only been able to use this twice because it's getting close to winter. The times I have used it, I am very happy with the power and the engine/pump combo. My one gripe that would probably get me to rate it at 4.5 stars is the hose being so stiff. Especially on the colder day, it was a lot to wrestle but I keep telling myself that will make it last longer. Hopefully, that's the case.

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
Nov 11, 2019
AM00
4 out of 5 stars review

Verified Purchase

Very good pressure washer

I had no previous expereince with pressure washers. The purchase of the PS60843 was my first experience. The packaging was good, the labeling and literature was good. I felt the literature could have discussed/identified the pressure offloader and the thermal offloader some more. After about 2 hours of using the unit, water started leaking out from the pressure offloader valve (I think it is). This is the brass spring loaded valve pointing downwards on the water output. I thought this is how the valve should operate, but the leak was costant, even when the engine was shut off. The leak caused the engine to pulse when the trigger was not depressed. I then checked the valve and it needed tightening. This should have been tightened at the factory and should not have come loose after 2 hours of use. However, this was a minor inconvenience. The engine starts well, if you turn down the pressure regulator to the lowest, and trigger the wand to release pressure. If the engine did not start after two firm pulls, depress the wand trigger again to release the pressure. I would like to have seen a simple fuel level indicator. Currently you have to remove fuel filter from the fuel tank and look inside. This should be fairly easy, but the filter has no real way to be held on too and lifted out without getting jammed against the surfaces of the tank surrounding it. Removing the filter is actually a very delicate and somewhat timely exercise. I made a wire hook to lift the filter out. It is simple and works, but another factory supplied method would have been nice.Perhaps a transparent fuel hose from the tank would be a good indicator. The lowest pressure I was able to get is 2000 PSI. I ran the unit at 3500PSI, but I could have gotten 4,000 or more. I did not want to max out the unit as it is new....break it in slowly. I am yet to play with adjusting the engine trottle using the supplied lever, and see if the pressure would decrease. I have not used the unit since, but will in a few days time. I cannot comment on reliability as yet, but sure hope this unit is reliable....very reliable. Overall, as of now, I believe this is an excellent unit. I am so far pleased with it. Would I purchase it again, yes.

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
reply from Customer Service

Hello Customer, On behalf of SIMPSON, we truly appreciate the thorough feedback that you've provided in regards to our product services. Please know that we are in the process of continuing to improve our product each and every year. - SIMPSON Team.

Apr 27, 2026
Michael D
1 out of 5 stars review

Junk!

I bought this machine a week ago because it was rated high for all categories. I got the machine and hooked it up……chemical injector doesn’t work the black valve cap on the regulator keeps popping off and the machine hydro locked on me. Horrible investment. Don’t waste your time or money

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

Hello, Michael D. We're concerned to hear about this rocky start & would like to learn more about the issues you've encountered with the injector/valve cap. Would you give our team a call directly at 877-362-4271 or email us at productsupport@simpsoncleaning.com? We hope to determine how to smooth out this experience as quickly as we can. Thanks for the review & we hope to be hearing from you soon!

Aug 25, 2016
Dave
3 out of 5 stars review

Verified Purchase

Powerful but pump ussue

Used for a total of 2 hours until dramatic pump failure with water spraying everywhere! Had to take whole sprayer to service center 20 miles away. Been there for a week and still no news about warranty repair. Despite this (I assume I was just unlucky) it is an incredibly powerful machine and is a fantastic cleaner.

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
Oct 15, 2018
slimtim
5 out of 5 stars review

Verified Purchase

GREAT PRESSURE WASHER

I bought this i think in August of this year and I am super pleased with it The pressure washer has more than enough power to clean anything you want in half the time you used too with lower psi washers The only draw back for me is that I am a 73 year old man and it is a little hard for me to pull start wish I would have bought electric start This is by far the best pressure washer I have ever owned I have had three others Would buy again in a heartbeat

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
Jul 7, 2018
Rooster
5 out of 5 stars review

Verified Purchase

This is a beast of a pressure washer

The thing I like the most is the adjustable pressure pump. When you are doing different jobs this is great. Cleaning Driveway to washing vehicles they need different pressures. This pressure washer is a beast and will remove paint so be careful. I been using the machine for two weeks so far and love it. Honda motor is great too, after putting machine together it started on first pull. Well pleased with it. It's worth the extra money to get extra fetchers.

Review from simpsoncleaning.com
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Oct 9, 2019
KMac
5 out of 5 stars review

Verified Purchase

Power!!!! Wow

I’ve been pressure washing houses for about 10 yrs. This is the best washer I have bought. It also comes at a good price. I have had no problem with the Simpson motor. I couldn’t pay for the overpriced Honda motor. From my experience Honda makes a good motor but the pressure washer usually wears out before any motor I’ve ever had. This washer has so much power it is hard to hold onto if you have it at full psi. It does adjust, but does not have a gauge. I just bought a new gauge to see how much power it actually has with my 150 ft hose. Great product, easy to start.

Review from simpsoncleaning.com
Helpful?4LDY3BT2CMUR13758761122
reply from Customer Service

Keith, Wow. The best washer you've ever bought? - THANK YOU for such a wonderful compliment. We are so happy to know your feedback - SIMPSON Team