Best Simpson Pressure Washers – My Reviews & Buying Guide

If you search for pressure washers online, you will see that a lot of the popular ones are made by Simpson. This should not be surprising because the company has more than 50 years of experience with pressure washers. Through the years, the company has manufactured a lot of these pressure washers, testament to their commitment to getting rid of dirt, grime and filth in homes, commercial and industrial applications.

While the company is known for their wide range of pressure washers, some of their products are better than the others. In this guide we’re going to take a close look at four of the best they have to offer.

Simpson Cleaning MSH3125-S 3100 PSI at 2.5 GPM

The MSH3125-S belongs to the MegaShot series, and with this kind of psi and GPM, it simplifies a lot of cleaning chores. From patios to decks to cars and house siding, the MSH3125-S removes dirt efficiently. Set up is easy too as you just need to pour the gas and start it up.

All the necessary attachments and engine oil are included. A cleaning tube has been thrown in as well in case you have to use cleaning solutions. The MSH3125-S has enough power to remove deep seated dirt as well as wood paint. The engine makes some noise like any gas pressure washer, but it’s not the type that’s going to irritate you.

The MSH3125-S comes with a handlebar so it’s easy to hold. There are 5 Quick Connect   tips including one for soap. Any one of these is simple to use and you can switch without a problem. Gas consumption is good and it is light enough a single person can move it. Like most of the Simpson models, the MSH3125-S runs on a Honda OHC engine for optimum performance.

Simpson Cleaning MS60763-S 3000 PSI at 2.4 GPM

The MS60763-S pressure washer is designed for the DIY enthusiast and the homeowner   who wants efficiency with ease of use. At 3000 psi, the MS60763-S has the capacity of an entry level commercial power washer. It has a simple, straightforward configuration and runs quietly.

The MS60763-S starts up smoothly and removes dirt from cars and outdoor furniture. Its high pressure hose is also more than capable of handling large outdoor cleaning jobs. The hose comes with M22 connectors and has the standard Quick Connect nozzle tips for adjustable sprays.

A 2000 psi pressure washer cleans patio furniture, cars, pavements and driveways, but a 300 psi like the MS60763-S does it better because it has more power. Running on a Kohler engine, the MS60763-S is made of high quality parts, including PowerBoost technology for more consistent pressure.

The MS60763-S doesn’t just have quality components, but they’re also durable. Its pneumatic tires don’t get flat so you’ll be able to use the MS60763-S in different environments. If you’ve got a lot of cleaning to do and need to move your pressure around, the MS60763-S is worth a look.

Simpson Cleaning PS3228-S 3200 PSI at 2.8 GPM

The PS3228-S is a high end pressure washer that meets the needs of both the homeowner and the power user. Belonging to the PowerShot series, the PS3228-S is powered by a Honda GX200 OHV 4 stroke, 196 CC engine. It is quick to start, the engine is built for reliability and has a low oil alert built in. This system shuts the system down whenever there’s not enough oil present.

Comprised of iron cylinder, the entire unit meets the requirements of the CARB and EPA emission standards. The PS3228-S is equipped with a Comet Industrial Triplex Pump and uses PowerBoost technology for maximum performance. PowerBoost is a proprietary technology from Simpson that provides better performance.

The PS3228-S comes with a siphon tube for detergent cleaning. In cases of embedded dirt, it’s necessary to use detergents, and that’s what the siphon tube is for. The Quick Nozzle Tips found on other Simpson pressure washers is here as well. Its 25 foot hose is also built to withstand abrasion, kinks and marring.

For your convenience, the PS3228-S is equipped with 10 inch, non-flat pneumatic tires. Its axle is made of solid steel while the rest of the body is welded steel. Its power and cleaning capability is greater than a car wash and the setup also makes fueling easy. Lastly, the compact design really makes a difference.

Simpson Cleaning PS4240H 4200 PSI at 4 GPM

If you pressure wash for a living or just require a lot of power, the PS4240H is probably the answer. At 4000 psi and 4 GPM, it has double the capacity of regular pressure washers. This might be overkill for homes, but it’s just what you need for commercial and industrial cleanup jobs.

The 4000 psi is complemented by a Honda GX390 OHV, 389 cc 4 stroke engine. It also has a triplex pump, cast iron cylinder and ceramic pistons. Its pneumatic tires are larger than the standard 10 inches found on other pressure washers. As part of the PowerShot series, it is powerful enough to handle most heavy duty tasks.

The PS4240H however, is also suitable for home use. If the 2000 or 3000 psi pressure washer cannot do the job, the PS4240H should get it done. If you’ve got to clean the gutter, fence or siding, just turn this pressure washer on and it will remove the dirt. This kind of power is not for everyone, and if you have regular cleaning needs it might be too much. But for heavy duty jobs, the PS4240H is up to the challenge.

What are the Benefits of a Simpson Pressure Washer?

Simpson makes a lot of pressure washers, and they’re built to suit the needs of different users. While they have different specs, each Simpson pressure washer has features that set them apart from the rest.

  • Quality Engines: Simpson pressure washers are equipped with high performance engines. Most of them also have a low alert feature that shuts the system down until it’s filled up.
  • Safety Protection: Simpson pressure washers have thermal relief / overheat protection. Even when you run the unit for extended periods, there’s little danger of overheating.
  • Easy to Maneuver: all the Simpson pressure washers we have reviewed here have non-flat pneumatic tires. We don’t have to expound on the benefits of non-flat tires for users, be it at home, commercial or industrial applications.
  • Durable Construction: these pressure washers have welded steel components, sturdy hoses and steel engine plates. Even though they’re solidly built, these pressure washers don’t compromise in terms of performance and mobility.
  • Solid Reputation: one of the things that consumers place a lot of value on is company reputation. Simpson has earned a reputation for being reliable, and that makes as huge difference. Even though there is a glut of pressure washers in the market, the Simpson brand remains popular.
  • Customer Support: even the best pressure washers could suffer problems, so customer support is necessary.

What You Can Expect with a Simpson Pressure Washer

Apart from the benefits we have already mentioned, these pressure washers have detailed manuals. These machines are easy to use, but the manual provides detailed information on how to get the most out its performance. From the operation, maintenance, safety reminders and troubleshooting, all the essentials are there.

Another advantage of Simpson pressure washers is you can enhance performance by adding components. Most if not all are built into each pressure washer, but you can order additional parts if the one on your washer gets damaged.

  • Spray Nozzle Tips: most Simpson pressure washers have five nozzles namely the black soap, red, green yellow and white. But you can also buy a variable nozzle and rotary nozzle for better performance.
  • Simpson power washers are built for heavy duty use as exemplified by its engine. The GX200 for instance, has a 3.1 L fuel capacity which is good for up to 3 hours of continuous use. Since it’s unlikely you’ll use the washer that way, the engine fuel should last up to 5 hours.
  • Simpson pressure washers have various accessories and replacement parts available. You can buy extensions for hose or wand as well.

Maintenance Tips

  • Follow the maintenance and safety instructions on the Simpson pressure washer owner’s manual. The details and specifics vary per product.
  • Do not use gasoline that is more than 30 days old.
  • Season to season storage for gas is recommended. What this means is maximum storage time for gas should not last longer than 3 to 4 months.
  • Storing a Simpson pressure washer for 30 days or more requires disposing of old oil and pouring in new. Make sure the water system is empty.
  • Clean the pressure washer thoroughly prior to storage. The instructions will also vary per model so refer to the manual.
  • Consider buying a pump saver if you have to store the pressure washer during the winter. A pump saver is placed in the pump and ensures the seal won’t crack.
  • If the pressure washer starts to leak, get an O-ring kit to replace the wand and hose ends. O-rings come in different types and sizes and the one for your pressure washer will be stated in the owner’s manual.
  • If you’re having trouble connecting the power washer to the high pressure hose, the brass coupler is probably damage. You can buy a replacement from Simpson or other vendors online.


  • Don’t let the hose touch with engine mufflers while it’s still hot.
  • Do not fill the fuel tank to the brim. The specific volume is mentioned in your owner’s manual.
  • Do not use the pressure washer in an enclosed location. Never use the power washer unless the area is properly ventilated.
  • Some Simpson pressure washer can only use hard or soft water, or hot or cold. Read the manual and follow the instructions given there.
  • Do not shut down the water supply while the engine runs.
  • Do not use the pressure washer if one of the components is worn out.

Troubleshooting Guide

Problem: the engine will not start.

Solution: the most likely reason is there’s not enough fuel. If that’s the case you just add more and start the engine again.

Another possible reason is pressure has built up following a couple of tries on the recoil starter. The solution is to give the trigger a good squeeze.

Other solutions you can try:

  • Make sure the choke lever is set to “choke”.
  • Reattach the spark plug wire if the power washer can’t detect it.

Problem: little to no pressure

Solution: the problem is likely due to low water pressure. Refer to the owner’s manual for the minimum GPM and PSI levels.

  • Check for leakage signs and repair immediately.
  • Inspect the nozzle for clogging.
  • If there’s clogging on the water filter screen, shut the pressure washer down and clean the filter.
  • If there is air inside the hose, turn the engine off. Shut down the water source. Disconnect the pump and activate the water source. Wait for the water to develop into a stream then shut the water source off. Connect the water source to the pump. Squeeze the trigger to get rid of the remaining air.

Problem: the pressure washer refuses to draw detergents.

Solutions: a dirty or clogged chemical filter is the most likely cause. A thorough cleaning should resolve the problem.

If the chemical screen isn’t in the solution, place the end of the siphon hose deeper into the solution. If the detergent is too thick, add some water to dilute it.

Problem: water leaking at the spray wand or gun.

Solutions: most likely problem is a worn out or damaged O-ring. Replace the O-ring if it’s been damaged.

Other suggestions:

  • Tighten the hose connection
  • Tighten all connections if the pump leaks water


There are a lot of reasons why the name Simpson has become synonymous with quality pressure washers, but ultimately it comes down to dependability and performance. It’s not just they are an established brand; through the years the company has remained consistent in terms of their pressure washers, in particular the four we have reviewed above.

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