Greenworks GPW1800 - 1800 PSI 1.1 GPM Electric Pressure Washer
The Greenworks GPW1800 is an electric pressure washer offering a maximum water pressure of 1800 PSI and flow of 1.1 GPM. (Read full specs)
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Description
Zoom on the Greenworks GPW1800
In summary, the Greenworks GPW1800 is a light duty pressure washer, that offers an all-around versatile cleaning experience, and also:
- spot cleaning of hard, unpainted surfaces, reaching high areas, and removing stubborn stains
- gentle cleaning of delicate surfaces, and low pressure cleaning of larger areas
- applying detergents and cleaning agents, and rinsing off surfaces
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
Powered by a 13-amp universal motor, its axial cam pump can deliver a pressure of 1800 PSI (around 30 times more than a standard garden hose) and a flow of up to 1.1 GPM (values as per PWMA testing standards). With these values combined, the Greenworks GPW1800 boasts a cleaning power of 1980 Cleaning Units.
The GPW1800 easily starts up with the press of an ON/OFF switch, providing seamless operation. The unit is ready-to-use with peace of mind, thanks to the included 35 ft GFCI cord.
Design & Handling
With its hand truck design, the Greenworks GPW1800 provides great mobility. The durable steel tubing frame of the assembly ensures its longevity, providing stability and shielding internal components from damage, even in tough conditions. The foam-padded fixed handle adds to the GPW1800 convenience of transport, while offering a comfortable grip.
At just 22.9 lbs, this unit is incredibly lightweight, ensuring hassle-free mobility wherever you need it. Complementing its lightweight frame, two 8" wheels are integrated, facilitating effortless transportation.
Main Features
Along with the Greenworks GPW1800 itself, the package also includes a spray gun, a wand, a pressure hose, 5 nozzles and a detergent injection feature, which are discussed in further detail below.
- Soap injection: A safe detergent storage is facilitated by a dedicated tank. The Greenworks GPW1800 is equipped with an automatic soap dilution mechanism, efficiently blending detergent to the predefined ratio of 7:1. Upon connecting a soap nozzle, the pressure washer takes over the task of seamlessly combining the detergent with the water flow.
- Pressure hose: With a set of easy-to-use straps, the unit provides a convenient way to store the included 20 ft high-pressure hose when not in use, keeping it organized and readily accessible.
- Spray gun and wand: Both the classic ergonomic spray gun and its wand may be conveniently stored in a side hook.
- Nozzles: The following table provides information on the 5 included nozzles and their recommended surface uses.
0° | 25° | 40° | Soap | Turbo | |
|---|---|---|---|---|---|
| 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: The Greenworks GPW1800'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).
- Accessories: The Greenworks GPW1800 comes with an owner's manual (opens in a new tab) and some basic documentation to get you quickly started. On top of that, you also get wand, power cord, pressure hose and spray gun.
Product Videos
The Greenworks GPW1800's performance versus other pressure washers
The following charts are provided to give you an idea of how the key specs of the Greenworks GPW1800 compare to similarly priced pressure washers.
Note: Even though we couldn’t list its price on this page, our research indicates that some retailers sell this unit around $170.
- The Greenworks GPW1800 with its 1800 PSI achieves a lower pressure value, compared to other electric pressure washers in the $150-170 price range. Prioritizing the highest water stream power? Check out the Westinghouse ePX3500—a top contender in this price range, delivering up to 2500 PSI.
- In comparison to devices within the previously mentioned price range, this washer, with its 1.1 GPM, is on the lower spectrum of achievable water flow. In case you are looking for a device which can most efficiently rinse away debris in the current price range, the Westinghouse WPX2300e has the highest GPM of 1.76.
- The GPW1800 has 1980 Cleaning Units (PSI X GPM), which can be considered low in comparison to other electric devices of this price. If you are after the highest overall cleaning power, the Goodyear GYE22C with its 3630 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 this interactive chart, when compared to other electric washers between 1500 and 2000 Cleaning Units, the Greenworks GPW1800 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
- Good range of nozzles included
- Automatic detergent dilution
- Onboard storage
- Low PSI for the price
- Low GPM for the price
- Low CU for the price
Features and Specifications
| Fuel | Electric |
|---|---|
| Motor | 13-amp, universal |
| Pump | Axial Cam |
| Water | Cold (104°F max.) |
| PSI | 1800 |
| GPM | 1.1 |
| Cleaning Units | 1980 |
| Frame | Steel tubing |
|---|---|
| Handling | Hand Truck |
| Wheels | 2 wheels, ⌀8" |
| Weight | 22.9 lbs |
| Hose storage | Straps |
| Soap injection | Yes |
|---|---|
| Soap tank | Yes |
| Soap dilution | 7:1 |
| Nozzles | 0°, 25°, 40°, Soap, Turbo |
| Quick connect nozzles | Yes |
| Onboard storage | Yes |
| Hose | 20 ft |
| Security | Trigger lock |
|---|---|
| Included accessories | Wand, spray gun, high pressure hose, 35 ft GFCI power cord, 5 nozzles |
| Warranty | 3 years |
| Other model numbers | 5101402 |
| UPC | 195526052678 |
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 Greenworks
Greenworks is a subsidiary of Globe Tools Group based in Changzhou, China. Founded in 2007 with the goal of marketing powerful lithium-ion battery technology paired with outdoor power equipment, Greenworks has regional offices in the USA and in Sweden. The company uses innovative methods to produce both corded electric and battery powered tools with power ratings ranging from 24-volts to commercial-grade 82-volts. Greenworks markets to homeowners and contractors who want smarter, greener, and cleaner solutions.
Warranty Information
The Greenworks GPW1800 is covered under a warranty for up to 3 years. This warranty may be limited and may not cover all parts of the unit.
For more information about the warranty of Greenworks pressure washers, please consult Greenworks' warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-888-90-WORKS (888-909-6757).

