Simpson ALH3228-S - 3400 PSI 2.5 GPM Gas Pressure Washer With Honda Engine
The Simpson Aluminum ALH3228-S is a gas-powered pressure washer offering a maximum water pressure of 3400 PSI and flow of 2.5 GPM. (Read full specs)
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Features and Specifications
| Fuel | Gas-Powered |
|---|---|
| Handling | Wheelbarrow |
| Water | Cold (100°F max.) |
| PSI | 3400 |
| GPM | 2.5 |
| Cleaning Units | 8500 |
| Engine | 196cc 5.5 HP Honda GX200 OHV 4-stroke |
| Pump | CAT 4DNX25GSI Triplex |
| Series | Aluminum |
| Other model numbers | 60735 |
| Frame | Aluminum |
|---|---|
| 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, ⌀5/16 |
| Hose storage | Hooks |
| Dimensions (L x W x H) | Approx. 30 x 21 x 24 in |
|---|---|
| Weight | 74 lbs |
| Pressure control | Valve |
| Wheels | 2 wheels, ⌀10", pneumatic |
| Included accessories | Oil, steel wand, spray gun, high pressure hose, soap hose, 5 nozzles |
| Security | Low oil, trigger lock and thermal relief valve |
| Emissions | EPA |
| Warranty | 10 years |
| UPC | 879399001642 |
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.
Description
Designed to surpass the demands of the cleaning professional, the SIMPSON® Aluminum Series 3400 PSI @ 2.5 GPM pressure washer is built to perform. Built 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 ALH3228-S
In summary, the Simpson ALH3228-S is a heavy duty, commercial pressure washer, that offers an all-around versatile cleaning experience, and also:
- targeted spot cleaning for hard, unpainted surfaces, reaching elevated areas, and thoroughly removing stubborn stains
- broad cleaning of hard surfaces, vehicle washing, and surface preparation for painting
- mild cleaning for delicate surfaces, and low-pressure cleaning for broader areas
- using cleaning solutions, and rinsing surfaces to remove residue
Ahead are presented its power characteristics and design, its main features and any other additional features.
Power
Its triplex pump, which utilizes a 196cc (5.5 hp) engine, may deliver a pressure of up to 3400 PSI (almost 57 times more than a standard garden hose) and a flow of up to 2.5 GPM. Corresponding to these values is a cleaning power of 8500 Cleaning Units.
Starting the Honda GX200 engine of this gas pressure washer involves using a conventional pull-start method.
Gasoline is stored in a steel fuel tank with a maximum capacity of 0.8 gallon.
Design & Handling
With its wheelbarrow design, the Simpson ALH3228-S delivers superior maneuverability and stability, facilitating easy transport and steady performance across various surfaces. Featuring an aluminum frame, this pressure washer boasts easy handling and exceptional durability, thanks to its corrosion-resistant properties and lightweight construction. The reversible handle offers further versatility, as its different positions make the unit less bulky when stored.
With its hefty 74 lbs, this unit isn't exactly easy to handle, making manual lifting and transport quite a daunting task, especially on uneven terrain. Its 196cc Honda GX200 engine, the triplex pump and aluminum frame are mainly responsible for its heavy weight. Nevertheless, with its two 10" pneumatic wheels, users can manage the ALH3228-S with less difficulty, even over uneven terrain.
Main Features
The Simpson ALH3228-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: While not equipped with a soap tank, the device maintains detergent supply through a siphon hose. The Simpson ALH3228-S features an automatic soap dilution mechanism that dilutes detergent according to a predefined ratio of 7:1. Once a soap nozzle is connected, the pressure washer automatically blends the detergent with the water flow.
- Pressure hose: Utilizing a set of convenient hooks, the unit offers a convenient solution for storing the included 25 ft ⌀5/16" high-pressure hose when it's not in use, keeping it neatly organized.
- Spray gun and wand: Both the classic ergonomic spray gun and its steel wand may be conveniently stored in a side hook.
- Nozzles: Refer to the table below for details on the 5 included nozzles and their recommended surface applications.
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
- Onboard storage: With the Simpson ALH3228-S's handy storage area, you’ll always have all the necessary nozzles and accessories at hand and thus, you’ll be fully prepared for any job.
- Safety: Safety of operation is enhanced by a trigger lock mechanism (which prevents accidental operation), a thermal relief valve (which helps to prevent internal pump damage) and a low oil protection.
- Accessories: Besides the usual owner's manual (opens in a new tab) and documentation to get you promptly started, the Simpson ALH3228-S comes with spray gun, wand, pressure hose, oil and soap hose.
Product Videos
The Simpson ALH3228-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 ALH3228-S compare to similarly priced pressure washers.
- Featuring 3400 PSI, the Simpson ALH3228-S achieves a lower pressure value compared to competing gas-powered pressure washers within the $825-900 price category. As for the device with the most powerful water stream, in this price range, one of the top products is the Westinghouse WPX4400 with 4400 PSI.
- When contrasted with devices in the aforementioned price bracket, this washer and its 2.5 GPM lie at the lower range of attainable water flow. If you’re after the highest rinsing efficiency, one of the units with the highest water flow in the current price range is the Westinghouse WPX4400, that can deliver up to 4.2 GPM.
- The ALH3228-S has 8500 Cleaning Units (PSI X GPM), which can be considered low in comparison to other gas-powered devices of this price. If you are after the highest overall cleaning power, the Westinghouse WPX4400 with its 18480 Cleaning Units is one of the products that can achieve the highest cleaning efficiency in this price range.
Price comparison
As you can see from these interactive charts, when compared to other gas-powered washers between 8000 and 8500 Cleaning Units, the Simpson ALH3228-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
- No soap tank
- Low PSI for the price
- Low GPM for the price
- Low CU for the price
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 ALH3228-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.




User Reviews
Simpson makes quality products. It has a Honda engine (like the old Briggs&Straton), which is bullet proof. The CAT Triplex pump is industrial grade. If you use this PW the average of 50hrs per year, it’s a ten year pump. If you take care of the pump, it’ll last much longer or you can use it, like I do, for light commercial use. The frame makes this machine light; I lift it in and out of my truck. Simpson customer service is a little lacking, but you will not call often. I think they are a very small company, that still uses paper and fax machines. I didn’t get all my nozzles; I literally got (4) 0 degree and (1) 15 degree. Called and they quickly apologized and said they send me the other 3 asap. ASAP took about 2 weeks, but I wasn’t in a rush. It’s pricey, but for the money, it competes with PW that run in the $850 to $950 range. Most other PW, in the price range, have either the CAT pump or the Honda or neither.