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Customer reviews for Simpson 3400 PSI at 2.5 GPM HONDA® GX200 with CAT Triplex Plunger Pump Cold Water Professional Gas Pressure Washer for
Simpson 3400 PSI at 2.5 GPM HONDA® GX200 with CAT Triplex Plunger Pump Cold Water Professional Gas Pressure Washer
4.6 out of 5 stars
stars
256 ratings256 reviews
  1. 5 stars75% (192)
  2. 4 stars18% (47)
  3. 3 stars4% (9)
  4. 2 stars1% (2)
  5. 1 star2% (6)
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Showing 1-10 of 256 reviews
Sep 15, 2026
Reviewer name: Bart92
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Quite & Steady Pressure

[This review was collected as part of a promotion.] The Simpson pressure washer has been a great tool on the farm. We use the PW to clean equipment, tractors, the exterior of the house, sheds and barns including decks and wood fences! The Honda engine is very quiet and the CAT pump provides a steady flow of pressure to clean on one pass. This is a great machine and I highly recommend this Pressure Washer!

Review from simpsoncleaning.com
Helpful?73RL69WXDDAG15910509749
May 5, 2026
Reviewer name: Paul R
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

my review after first use.

pressure washer works great. Cleaned 500' of cedar fence and two large decks. Here are my thoughts. Fuel tank could be larger as it runs through fuel quickly. Pressure washing hose is extremely stiff and is a wrestling match to use, I used my old hose rather than the new one. Hardware holding the mounting plate to the frame and the motor to the frame keep coming loose and should have lock washers or Lock tight. The operation of the washer is great though. it is powerful enough to do what i need it to do. Has a great rebuildable pump. It is a great size and easy to store. All in all I would buy it again

Review from simpsoncleaning.com
Helpful?73RL69WXDDAG15910509749
May 24, 2026
Reviewer name: vblaze
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

It is a nice one!

The unit is flawless after I secured two of the engine mounting bolts. Two of the four were not tightened at the factory. The nut fell off of one of them, luckily I discovered it almost immediately upon initial startup when I saw the nut laying on my sidewalk. I secured the two that were loose and checked all other fasteners and found that the rest were all fine. I have used the unit twice for a total of approximately 2 hours and it works flawlessly. I purchased the Simpson stainless surface washer unit as well and it made quick work of my patio and driveway. It is a nice one!

Review from simpsoncleaning.com
Helpful?73RL69WXDDAG15910509749
Jun 26, 2026
Reviewer name: Anonymous
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great features

I Purchased a unit just like this one 28 years ago. It served me well over the years, I loaned to my children on several occasions. It finally started giving me a few problems so I give it to a friend. Being very pleased with the previous unit, I purchased this one expecting the same service

Review from simpsoncleaning.com
Helpful?73RL69WXDDAG15910509749
Oct 19, 2026
Reviewer name: Steve's pressure washer
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

Placement of nozzles is great. Once running the pressure washer is great.

After having all levers and switches in starting position, pulling the starter rope it becomes taut about half away out. It's my opinion that the caterpillar pump produces pressure so quickly that it is fighting the engine. A second pull is nearly impossible. The pressure now has to be released from the gun. A second attempt produces the same result.I purchased and added a brass ball valve at the water inlet port. After turning that valve off, releasing the air from the gun The engine then starts on the first pull every time. The valve ball has to be turned back on and it works great≥

Review from simpsoncleaning.com
Helpful?73RL69WXDDAG15910509749
Sep 10, 2026
Reviewer name: Beri
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

Alh3228

Performance wise it has done fenomenalan job, works great with Simpson driveway cleaner. I gave 4 stars because of following 1. For a price quality control is lacking, the only thing I needed to assemble is a handle at that does not fit 2. For a price 25 feet of hose is inadequate tried to find more but none is available in that size and diameter 3. Instructions are for multiple pressure washers and confusing, I ended up breaking pump relief valve which for some inexplicable reason is made of brittle plastic.

Review from simpsoncleaning.com
Helpful?73RL69WXDDAG15910509749
Aug 4, 2026
Reviewer name: Planenutz65
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

Power washer

[This review was collected as part of a promotion.] Very powerful. Works well with 24 inch surface cleaner for driveways. Engine starts first pull. Only reason for 4 stars is unit vibrates in a manner it can get your water hose out of joint and possibly kink.

Review from simpsoncleaning.com
Helpful?73RL69WXDDAG15910509749
Jul 28, 2026
Reviewer name: A lot of money
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

Good product, does a nice job.

[This review was collected as part of a promotion.] Product works great. Not sure it did any better job than my 25 year old 2400 psi machine did. Used to clean a cedar fence, about a 6 hour job and during using two bolts vibrated out of different places. Overall happy with the machine though.

Review from simpsoncleaning.com
Helpful?73RL69WXDDAG15910509749
reply from Simpson Team

Hello - thanks for sharing this experience. We will be sure to alert our team to the loose bolts & appreciate your valuable feedback. It's good to hear you otherwise enjoyed the performance of your unit!

May 4, 2026
Reviewer name: IEscaoed
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

Nice unit

I have owned this for about one year. The unit came with no owners manual. I realized the pump had an oil level and seemed out the owners manual. Upon first using the unit it tends to get air bound and stops putting out high pressure water. After squeezing the trigger it usually restores the pressure

Review from simpsoncleaning.com
Helpful?73RL69WXDDAG15910509749
Sep 3, 2026
Reviewer name: Gar53
3 out of 5 stars
3 out of 5 stars review

Verified Purchase

Washer moves a lot when running. Could be dangerous and move off something or into something

[This review was collected as part of a promotion.] I have a pressure washer that has a lot of power but while it is running it moves all over the place. It vibrates a lot.

Review from simpsoncleaning.com
Helpful?73RL69WXDDAG15910509749
reply from Service

Hello, Gar53. We're sorry to hear about the vibration. If it seems excessive or you suspect a performance issue, please reach out directly to us at 877-362-4271 or email us at productsupport@simpsoncleaning.com, & we hope to do some troubleshooting to smooth out this performance. Thanks for reviewing & we hope you will be in touch!