Simpson ALH3425-S - 3600 PSI 2.5 GPM Gas Pressure Washer With Honda Engine
The Simpson Aluminum ALH3425-S is a gas-powered pressure washer offering a maximum water pressure of 3600 PSI and flow of 2.5 GPM. (Read full specs)
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Global Industrial | Price history for the Simpson ALH3425-S |
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| Highest Price $909.00 Lowest Price $729.00 Current Price $729.00 |
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Description
Built for professional grade performance, the SIMPSON® Aluminum Series 3600 PSI @ 2.5 GPM pressure washer is built to perform. With a powerful Honda engine, reliable triplex pump and ultra lightweight aircraft grade aluminum frame, this gas pressure washer is great for construction, equipment upkeep, facility & fleet maintenance cleaning.
Zoom on the Simpson ALH3425-S
In summary, the Simpson ALH3425-S is a heavy duty, commercial pressure washer, that offers an all-around versatile cleaning experience, and also:
- focused spot cleaning on hard, unpainted surfaces, accessing high spots, and efficiently eliminating stubborn stains
- overall cleaning of hard surfaces, washing vehicles, and prepping surfaces for painting
- mild cleaning for delicate surfaces, and low-pressure cleaning for broader areas
- applying detergents or chemicals, and rinsing surfaces afterward
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 ALH3425-S
The Simpson ALH3425-S's triplex pump, powered by a 196cc (5.5 hp) engine, can provide a pressure of up to 3600 PSI (approximately 60 times more than a standard garden hose) and a flow of up to 2.5 GPM (CETA-certified values). Thus, the Simpson ALH3425-S achieves a cleaning power of 9000 Cleaning Units.
For this gas-powered pressure washer, the Honda GX200 engine is started using a time-tested pull-start mechanism.
Containing gasoline, the pressure washer's steel fuel tank can hold a maximum of 0.83 gallon.
Design & Handling
The Simpson ALH3425-S's wheelbarrow-style design enhances both mobility and stability, enabling seamless navigation and consistent performance, even on rugged terrain. Featuring an aluminum frame, this pressure washer boasts easy handling and exceptional durability, thanks to its corrosion-resistant properties and lightweight construction. The handle adds to the ALH3425-S convenience of transport.
Weighing in at 78 lbs, it's safe to say this unit isn't lightweight, which might pose difficulties for users when it comes to lifting and transporting, particularly over uneven surfaces. Its 196cc Honda GX200 engine, the triplex pump and aluminum frame add up to a large chunk of the device's weight. Despite this, the presence of two 10" pneumatic wheels reduces the complexity of moving the ALH3425-S, even on rugged surfaces.
Main Features
The Simpson ALH3425-S
The Simpson ALH3425-S comes with a spray gun, a wand, a pressure hose, 5 nozzles and a detergent injection feature, which are detailed below.
- Soap injection: While the device doesn't feature a soap tank, detergent supply is ensured by a siphon hose. Utilizing an automatic soap dilution mechanism, the Simpson ALH3425-S accurately mixes detergent to the defined ratio of 7:1, enhancing cleaning efficiency. Upon connecting a soap nozzle, the pressure washer takes over the task of seamlessly combining the detergent with the water flow.
- Pressure hose: When not in use, the unit allows for tidy storage of the included 35 ft ⌀5/16" high-pressure hose using a set of convenient hooks, ensuring convenient organization.
- Spray gun and wand: A side hook allows for an easy storage of the included classic ergonomic spray gun and its steel wand.
- Nozzles: The following table provides information on the 5 included nozzles and their recommended surface uses.
0° | 15° | 25° | 40° | Soap | |
|---|---|---|---|---|---|
| Concrete, brick, masonry | |||||
| Siding, gutters, house | |||||
| Fencing, deck, patio | |||||
| Lawn equipment, boat, RV |
Please note: The shapes of the nozzles depicted above are for illustration purposes and may vary. Symbols used include a for 'Not recommended,' a for 'Suitable,' and an for 'Use with caution.'
Other Features
Some of the included accessories
- Onboard storage: The Simpson ALH3425-S's handy storage area lets you store nozzles and accessories, and thus, you’ll be always prepared and have everything necessary for the job at hand.
- Safety: Safety of operation is enhanced by a trigger lock mechanism (which prevents accidental operation), a low oil protection 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 ALH3425-S also comes with wand, oil, soap hose, pressure hose and spray gun.
Product Video
The Simpson ALH3425-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 ALH3425-S compare to similarly priced pressure washers.
- The Simpson ALH3425-S, with a max water pressure of 3600 PSI, has one of the higher PSI values of the gas-powered products in the $675-800 price range. As for the device with the most powerful water stream, in this price range, one of the top products is the A-iPower PWF4200SH with 4200 PSI.
- The achievable water flow of this washer, which reaches 2.5 GPM (gallons per minute) can be described as low, compared to other devices in its price range. If you’re after the highest rinsing efficiency, one of the units with the highest water flow in the current price range is the A-iPower PWF4200SH, that can deliver up to 4 GPM.
- With a total of 9000 Cleaning Units (PSI X GPM), the ALH3425-S places itself within the average cleaning efficiency range for comparably priced gas-powered units. If the highest overall cleaning power is a priority, the A-iPower PWF4200SH and its 16800 Cleaning Units are notable for their higher potential cleaning efficiency compared to units in the same price range.
Here's a list of the most popular specific comparisons:
Price comparison
As you can see from these interactive charts, when compared to other gas-powered washers between 9000 and 9500 Cleaning Units, the Simpson ALH3425-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
- 10 year (limited) warranty
- Triplex pump
- Honda engine
- Designed to be stable
- Aluminum frame
- Good range of nozzles included
- Automatic detergent dilution
- Onboard storage
- Several security features
- High PSI for the price
- Decent CU for the price
- No soap tank
- Low GPM for the price
Do you own the Simpson ALH3425-S and agree (or disagree) with these strengths and weaknesses?
Let us know and write your own review.
Features and Specifications
| Fuel | Gas-Powered |
|---|---|
| Engine | 196cc 5.5 HP Honda GX200 OHV 4-stroke |
| Pump | AAA Triplex |
| Water | Cold (100°F max.) |
| PSI | 3600 |
| GPM | 2.5 |
| Cleaning Units | 9000 |
| Pressure control | Valve |
| Frame | Aluminum |
|---|---|
| Handling | Wheelbarrow |
| Wheels | 2 wheels, ⌀10", pneumatic |
| Weight | 78 lbs |
| Dimensions | Approx. 34 x 21 x 24 in (L x W x H) |
| Hose storage | Hooks |
| Soap injection | Via siphon hose |
|---|---|
| Soap dilution | 7:1 |
| Nozzles | 0°, 15°, 25°, 40°, Soap |
| Quick connect nozzles | Yes |
| Onboard storage | Yes |
| Hose | 35 ft, ⌀5/16 |
| Security | Low oil, trigger lock and thermal relief valve |
|---|---|
| Emissions | EPA |
| Included accessories | Oil, steel wand, spray gun, high pressure hose, soap hose, 5 nozzles |
| Warranty | 10 years |
| Series | Aluminum |
| Other model numbers | 60689, 60768 |
| UPC | 879399001352 |
We've taken extra care to research and verify each of the specifications above. That said, occasional mistakes or omissions are still possible. If you spot any missing or inaccurate information, feel free to suggest a correction so we can address it.
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 ALH3425-S is covered under a warranty for up to 10 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.
