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Customer reviews for Aluminum ALH3425(-S) 49-State 3600 PSI at 2.5 GPM HONDA® GX200 with AAA® Triplex Plunger Pump Cold Water Professional Gas Pressure Washer for
Aluminum ALH3425(-S) 49-State 3600 PSI at 2.5 GPM HONDA® GX200 with AAA® Triplex Plunger Pump Cold Water Professional Gas Pressure Washer
4.6 out of 5 stars
stars110 ratings110 reviews
  1. 5 stars70% (77)
  2. 4 stars25% (27)
  3. 3 stars2% (2)
  4. 2 stars3% (3)
  5. 1 star1% (1)
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Showing 51-60 of 110 reviews
Apr 12, 2026
Gerry_62
5 out of 5 stars review

Simpson 3600 PSI

Product is as advertised. Assembly was a breeze according to instructions. I am off to get a fresh batch of gas then off to power washing by patio and walkways!

Review from simpsoncleaning.com
Helpful?14ORGU9XL2D013960212449
Mar 20, 2026
Parneel
5 out of 5 stars review

Great Power and Excellent Performance

I bought this pressure washer today and the power was just beyond expectation. I will highly recommend this to my other friends as this was recommended to me by one of my friends.

Review from simpsoncleaning.com
Helpful?14ORGU9XL2D013960212449
Nov 20, 2025
TX-Techman
5 out of 5 stars review

Great Pressure Washer, Very Reliable

I purchased this unit about a month ago to replace an older one I have had for years. The first use was washing the house down to get it ready to paint and the unit worked great. Starts first pull every time, hot or cold start. The only minor issue I have had is the connector on the pump for the pressure hose. I typically remove the hose between uses and it stuck when taking it off. Other than it has worked flawlessly and I highly recommend this unit.

Review from simpsoncleaning.com
Helpful?14ORGU9XL2D013960212449
reply from Simpson Team

We are glad to hear your 3600 PSI pressure washer delivered a flawless performance for great results on your house, TX-Techman. Thanks for taking the time to review!

Nov 19, 2025
DGdelivers
5 out of 5 stars review

SIMPSON Solid, light with dependable components.

[This review was collected as part of a promotion.] I bought this after doing a lot of research. I'll be using it around salt water a lot and wanted it for the aluminum frame. Which seems Simpson is the only one out there that has an aluminum frame and was in my price point. An added benefit is that it is very light if a need arises, like lifting it into a pickup truck bed. I got this model due to the always dependable Honda engine and heavy duty components.

Review from simpsoncleaning.com
Helpful?14ORGU9XL2D013960212449
reply from Simpson Team

We're glad to hear the materials, portability & quality components made this Simpson pressure washer the perfect machine to suit your needs, DGdelivers. Thanks for sharing your experience!

Jan 19, 2020
Frofro
5 out of 5 stars review

Verified Purchase

Simpson ALH-3425S

Very good pressure, cleaned driveway and bricks easily. Completely satisfied with purchase. Highly recommend this unit.

Review from simpsoncleaning.com
Helpful?14ORGU9XL2D013960212449
reply from Customer Service

Hello Frofro, We appreciate your support and feedback. Thank you! - SIMPSON Team

Jun 11, 2015
Kirk
5 out of 5 stars review

Verified Purchase

So far so good

Fast attic results during first week of use. Pay close attention to non or treated ethinol gas for longevity.

Review from simpsoncleaning.com
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Mar 27, 2020
wahoobill
4 out of 5 stars review

Verified Purchase

runs great-- easy to handle

I bought it for my small business and it has more power than I envisioned.. Also very easy to handle...

Review from simpsoncleaning.com
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Nov 27, 2023
Joe in Florida
5 out of 5 stars review

Verified Purchase

On Time, Easy to Assemble, EZ to Start, Ran Great

Couldn’t have asked for more. Enjoyed working with the little powerhouse for about 12 hours. No problems whatsoever.

Review from simpsoncleaning.com
Helpful?14ORGU9XL2D013960212449
reply from Simpson Team

We're glad to hear you enjoyed a flawless performance and your 3600 PSI delivered plenty of power to suit your needs. Any time you care to show it off, you can tag #simpsonclean on social media and we'd love to see the results you achieve. Thanks for taking the time to share your experience, Joe in Florida!

Jul 1, 2015
Jacob
2 out of 5 stars review

Verified Purchase

would be great if it sat level and didn't tip....

wish it sat level and didn't tip over on slightly slanted surface. inimpressed and would like a company response from Simpson

Review from simpsoncleaning.com
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Aug 8, 2015
k636
4 out of 5 stars review

Verified Purchase

great product

bought this a eek ago works great,but for the money wish it had a better hose and quick connects.handle a little to low for me.

Review from simpsoncleaning.com
Helpful?14ORGU9XL2D013960212449