Memorial Day
The Simpson MegaShot MSH3125-S is a gas-powered pressure washer offering a maximum water pressure of 3200 PSI and flow of 2.5 GPM. (Read full specs)
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Features and Specifications
| Fuel | Gas-Powered |
|---|---|
| Handling | Wheelbarrow |
| Water | Cold |
| PSI | 3200 |
| GPM | 2.5 |
| Cleaning Units | 8000 |
| Engine | 187cc 6 HP Honda GC190 4-stroke OHC |
| Pump | Axial Cam |
| Series | MegaShot |
| Other model numbers | 60551 |
| Frame | Welded steel |
|---|---|
| Soap injection | Via siphon hose |
| Soap dilution | 7:1 |
| Nozzles | 0°, 15°, 25°, 40°, Soap |
| Quick connect nozzles | Yes |
| Onboard storage | Yes |
| Hose | 25 ft, ⌀1/4 |
| Hose storage | Hooks |
| Dimensions (D x W x H) | Approx. 34 x 21 x 24 in |
|---|---|
| Weight | 55 lbs |
| Wheels | 2 wheels, ⌀10", pneumatic |
| Included accessories | Oil, steel wand, spray gun, high pressure hose, soap hose, 5 nozzles |
| Security | Trigger lock and thermal relief valve |
| Emissions | EPA |
| Warranty | 5 years |
| UPC | 879399000959 |
Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.
Description
Zoom on the Simpson MSH3125-S
The Simpson MSH3125-S, a heavy duty, commercial pressure washer, gives its user an all-around versatile cleaning experience, topped off by the following features:
- spot cleaning of hard, paint-free surfaces and out-of-reach areas
- intense cleaning of tough, paintless surfaces
- cleaning of painted and fragile surfaces
- applying detergent and cleaning solutions
The following sections will present you in detail its power characteristics and design, its main features and all the additional features it has to offer.
Power
The Simpson MSH3125-S
The Simpson MSH3125-S's axial cam pump, powered by a 187 cc (6 hp) engine, can provide a pressure of up to 3200 PSI (approximately 53 times more than a standard garden hose) and a flow of up to 2.5 GPM (CETA-certified values). The Simpson MSH3125-S thus has a cleaning power of 8000 Cleaning Units.
The Honda GC190 engine of this gas-powered pressure washer gets started by a classic pull-start mechanism.
The fuel is stored in a tank, which can hold up to 0.48 gallon of gasoline.
Design & Handling
The wheelbarrow design of the Simpson MSH3125-S grants mobility and stability to the unit. Its sturdy welded steel frame provides longevity to the assembly. The handle adds to the MSH3125-S convenience of transport.
Most users can maneuver this model easily, as it weighs just 55 lbs. One of the largest contributors to its weight are its 187 cc Honda GC190 engine and its welded steel frame. But, as the MSH3125-S does have a set of two 10" pneumatic wheels, it can be easily maneuvered and manipulated.
Main Features
The Simpson MSH3125-S
The Simpson MSH3125-S's package includes a spray gun, a wand, a pressure hose, 5 nozzles and a detergent injection feature, with a more detailed description below.
- Soap injection: Detergent is fed in through a siphon hose, since the device lacks a soap tank. The Simpson MSH3125-S has an automatic soap dilution mechanism, which dilutes the detergent using a 7:1 ratio. The detergent will be added automatically to the water when a soap nozzle is attached.
- Pressure hose: The included 25 ft ⌀1/4" high-pressure hose can be neatly stored on the unit when idle thanks to a set of convenient hooks.
- Spray gun and wand: A side hook enables you to easily store the included classic ergonomic spray gun and its steel wand.
- Nozzles: The 5 nozzles included with the device, and the respective surfaces which they’re the most suitable for, are shown in the following table.
0° | 15° | 25° | 40° | Soap | |
|---|---|---|---|---|---|
| Concrete, brick, masonry | Use with caution | Suitable | Suitable | Suitable | Suitable |
| Siding, gutters, house | Not recommended | Use with caution | Use with caution | Suitable | Suitable |
| Fencing, deck, patio | Not recommended | Use with caution | Use with caution | Suitable | Suitable |
| Lawn equipment, boat, RV | Not recommended | Use with caution | Use with caution | Use with caution | Suitable |
Note: The shape of the nozzles above is for illustration purposes only and may differ.
Red cross: Not recommended. Green check: Suitable. Orange check: Use with caution.
Other Features
Some of the included accessories
- Onboard storage: The Simpson MSH3125-S allows you to be always fully prepared, as it features a handy storage area, where nozzles and accessories can be stored.
- Safety: Safety of operation is enhanced by a trigger lock mechanism (which prevents accidental operation) and a thermal relief valve (which helps to prevent internal pump damage).
- Accessories: On top of an owner's manual (opens in a new tab) and the usual documentation to get you swiftly started, the Simpson MSH3125-S also comes with spray gun, wand, pressure hose, soap hose and oil.
- Emissions: The Simpson MSH3125-S is NOT CARB-compliant. Therefore, it is not available in California for sale nor purchase.
Product Videos
The Simpson MSH3125-S's performance versus other pressure washers
The following charts are provided to give you an idea of how the key specs of the Simpson MSH3125-S compare to similarly priced pressure washers.
- Able to deliver a maximum pressure of 3200 PSI, the Simpson MSH3125-S is one of the gas-powered products that produce an above average water pressure, in the $300 to $400 price range. If your priority is the highest possible power of the water stream, in this price range, we suggest checking out the Westinghouse WPX3400, which reaches up to 3400 PSI.
- Considering its water flow, this washer, with a GPM (gallons per minute) of 2.5 is in the average compared to other devices in its price range. If rinsing away debris most efficiently is your priority, one of the devices with the highest GPM in this price range is the Predator 3200, which can reach up to 2.8 GPM.
- The MSH3125-S, with its 8000 Cleaning Units (PSI X GPM) sits at the high end of the cleaning efficiency spectrum, when compared to other devices of similar price. When it comes to the highest overall cleaning power in the current price range, one of the products at the very top currently is the WEN PW3400 and its 9180 Cleaning Units.
Here's a list of the most popular specific comparisons:
Price comparison
As you can see from this interactive chart, when compared to other gas-powered washers between 8000 and 8500 Cleaning Units, the Simpson MSH3125-S is on the average side of the price range.
Therefore, this pressure washer nicely fits in the expected budget for this kind of cleaning power.
The bottom line
- In the expected price range
- Honda engine
- Designed to be stable
- Good range of nozzles included
- Automatic detergent dilution
- Onboard storage
- Several security features
- 5 year (limited) warranty
- High PSI for the price
- High CU for the price
- Decent GPM for the price
- No soap tank
- Not CARB-compliant
About Simpson
Simpson has over 50 years of experience making quality products for the outdoor power equipment industry. Part of the FNA Group based in Pleasant Prairie, Wisconsin since 2006, they are a vertically-integrated company, meaning most of the parts and accessories are manufactured and assembled by them. Their manufacturing facilities are international, but their gas-powered pressure washers are made in the USA. With the company motto "Driven by Performance", Simpson continues to offer a great variety of pressure-washing systems for the homeowner or the professional contractor.
Warranty Information
The Simpson MSH3125-S is covered under a warranty for up to 5 years. This warranty may be limited and may not cover all parts of the unit.
For more information about the warranty of Simpson pressure washers, please contact the Simpson Customer Support: 1-877-362-4271.
