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Simpson MSH3125 Review: The Best All-Purpose Pressure Washer

Product reviews are a great way to provide unbiased opinions and information about a product. Simpson MSH3125 Review is no exception!

This review will cover the pros and cons and what makes Simpson MSH3125 unique from other pressure washers on the market today.

There are many reasons why Simpson MSH3125 might be right for you: it provides high-quality cleaning power; it has an ergonomic design that feels natural in your hands; it’s easy to use; and more!

We’ll explore all of these benefits below, so keep reading!

Last update on 2022-01-15 / Affiliate links / Images from Amazon Product Advertising API

What we like

  • Heavy-duty
  • On the first or second pull, the engine starts.
  • The engine is extremely powerful
  • The washer is equipped with pneumatic tires, making it simple to transport.

What We Don’t Like

  • There is no onboard soap tank.

What’s in the box

  • The Pressure Washer Unit
  • Five quick connect nozzle tips (0°, 15°, 25°, 40°, and soap)

Experts’ View

The SIMPSON MegaShot MSH3125 Pressure Washer is a powerful machine that can handle almost any cleaning task. However, a few poor design choices may be annoying.

Features and Specifications

  • It has a built-in hose and gun storage.
  • Detergent remains in the siphoning tube.
  • 10-inch pneumatic premium tires allow for flexible mobility.
  • The unloader system consists of a thermal relief valve and an unloader.
  • 5 Quick connecting nozzles are also included (0,15, 25, 40, and soap nozzle).
  • A high-performance residential engine from Honda (GC190)

The SIMPSON MSH3125 Installation Process: Easy Setup

The SIMPSON MSH213 is a durable power washer that will last for years. It comes partially assembled, so you don’t have to worry about putting it together. Instead, simply attach the handle until it snaps into place and add oil before firing it up.

Although SIMPSON provides the oil with the power washer, we provided the fuel. The oil is kept in a soft bag that can be damaged if mismanaged. Overall, assembling took us around 15 minutes.

Simpson MSH3125 Review

Now I’m starting my technical analysis of the Simpson MSH3125. I’ve read a few other assessments on this model, and it appears that the majority of people are pleased with it.

Performance: Great for small and big jobs

The power of this tool is what makes it unique. The water pressure is 3,200 PSI, and the water flow is 2.5 GPM (gallons per minute). 

This tool can clean most surfaces. For example, we used it as a pressure washer for our house, and we were able to remove the mold on some of the siding panels easily. 

Note: If you want more power than this unit provides, you should look into gas-powered models.

Durability: Strong and sturdy

Getting the GPM and PSI is one thing, but how well-built is it? Well, this model has a steel frame that makes it durable. It also features a high-quality axial pump for long-lasting performance. 

The nozzles are made of brass so that they won’t rust easily from all those chemicals you’ll be using. In addition, they can adjust the flow and pressure of the water with just a push of a button.

Design: Improvement Needed!

The MSH3125 is a powerful power washer that can clean even the most filthy messes. However, this device is a mixed bag, with some fantastic features and others that may be annoying.

Price: A fair price for heavy-duty performance

Although you can find some cheaper models, this one is not that expensive compared to other similar power washers on the market. Currently, it’s selling at around $400.

Maintenance: Easy and simple

Just like any other power washer, you’ll need to change the oil after a while. But make sure you are using Simpson’s formula for this machine because it is designed for Simpson products in mind.

Noise Level: Quiet for a gas-powered model

The MSH3125 is not that loud, but it’s still noisier than your average power washer. The Honda engines are known for their relatively quiet operation, and Simpson uses them in their products. 

We took measurements from both close to the machine and 25 feet away. The pressure washer’s operator will be exposed to an ear-splitting 93.2-decibel level. The sound level drops to 80.1 decibels at a distance of 25 feet, which is still quite loud.


  • 2 Year limited HONDA consumer engine, 1-year limited pump, 5-year limited frame, and 90-day accessory
  • One year limited pump warranty
  • Five-year limited frame warranty
  • 90-day limited accessory warranty

Customer Support: Should be better

When it comes to customer service, Simpson sucks. Do not expect a quick solution to clashes and difficulties with most of its technical support outsourced. To get the missing components back, you must wait two weeks.

 You might connect with someone who doesn’t understand what you’re telling them but isn’t particularly interested in assisting.

Competition: It is up to you to decide

Last update on 2022-01-14 / Affiliate links / Images from Amazon Product Advertising API

Last update on 2022-01-12 / Affiliate links / Images from Amazon Product Advertising API

Final Verdict

MSH3125 is a great power washer for cleaning big and small messes! This tool is a durable machine that should last you years if well maintained. I hope that my Simpson MSH3125 Review has assisted you in making an informed decision.

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Brett Tyler

Brett Tyler

I’m Brett Tyler, an entrepreneur, but more importantly (well, to me at least), a tool head. I’m passionate about all sorts of machines and how they work – it’s in my blood.

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