Kärcher K1800PS - 1800 PSI 1.2 GPM Electric Pressure Washer
The Kärcher K1800PS is an electric pressure washer offering a maximum water pressure of 1800 PSI and flow of 1.2 GPM. (Read full specs)
Page Content
Description
The K1800PS was developed to offer high cleaning performance and unparalleled ease of use. This electric pressure washer delivers 1800 PSI of TruPressure™, ensuring you get the highest level of cleaning power and driven by a reliable universal motor. It includes convenience features such as a unique on/off foot switch, a handy storage bin, large one-half gallon removable detergent tank and three spray nozzles (including a turbo nozzle for intense cleaning). It is perfect for tackling typical outdoor cleaning jobs.
Zoom on the Kärcher K1800PS
In a nutshell, the Kärcher K1800PS is a light duty pressure washer that allows:
- comprehensive cleaning of hard surfaces, vehicle washing, and readying surfaces for painting
- applying detergents and cleaning agents, and rinsing off surfaces
- spot cleaning of hard, unpainted surfaces, and removing stubborn stains
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 Kärcher K1800PS's axial pump, powered by a 13-amp universal motor, can provide a pressure of up to 1800 PSI (approximately 30 times more than a standard garden hose) and a flow of up to 1.2 GPM (CETA-certified values). Thus, the Kärcher K1800PS achieves a cleaning power of 2160 Cleaning Units.
Kärcher made starting the motor of this electric pressure washer as easy as possible, since the K1800PS gets easily started by stepping on an ON/OFF pedal. 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 and approximate dimensions of D17.5 x W16.5 x H33.1 in, the Kärcher K1800PS provides great mobility. The folding handle enhances its mobility, while allowing for a convenient storage.
This unit's low weight of 20.7 lbs ensures easy maneuverability, allowing you to tackle cleaning projects with minimal effort. Its plastic frame plays a role in ensuring its lightweight profile. As if its lightweight construction wasn't convenient enough, the unit is equipped with two 8" never-flat wheels, adding further ease to its transportation and maneuverability.
Main Features
Along with the Kärcher K1800PS itself, the package also includes a spray gun, a wand, a pressure hose, 3 nozzles and a detergent injection feature, which are discussed in further detail below.
- Soap injection: Detergent storage is ensured by a removable 0.3 gal tank. It must be noted that the Kärcher K1800PS doesn’t come with a soap dilution mechanism. Therefore, you must always make sure that your detergent is correctly diluted. Attachment of a soap nozzle prompts the pressure washer to automatically introduce and blend the detergent with the water.
- Pressure hose: The unit comes equipped with an included 20 ft high-pressure hose, which can be neatly stored on the unit when idle, thanks to a dedicated slot, ensuring easy access and organization.
- Spray gun and wand: A front sheath enables you to easily store the included classic ergonomic spray gun and its wand.
- Nozzles: Find details on the 3 included nozzles and their recommended surface applications in the table below.
15° | Soap | Turbo | |
|---|---|---|---|
| Concrete, brick, masonry | |||
| Siding, gutters, house | |||
| Fencing, deck, patio | |||
| Lawn equipment, boat, RV |
Please be aware: The shapes of the depicted nozzles are for illustration purposes and may differ. Symbols utilized include a indicating 'Not recommended,' a for 'Suitable,' and an for 'Use with caution.'
Other Features
- Onboard storage: With the Kärcher K1800PS'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).
- Accessories: Besides the usual owner's manual (opens in a new tab) and documentation to get you promptly started, the Kärcher K1800PS comes with power cord, wand, spray gun, pressure hose and garden hose adapter.
The Kärcher K1800PS's performance versus other pressure washers
The following charts are provided to give you an idea of how the key specs of the Kärcher K1800PS compare to similarly priced pressure washers.
- The Kärcher K1800PS, a device which can produce up to 1800 PSI, is on the lower end of the pressure spectrum, among the electric pressure washers in the $195-255 price range. Prioritizing the highest water stream power? Check out the Craftsman CMEPW2800—a top contender in this price range, delivering up to 2800 PSI.
- When compared to devices in the above-mentioned price range, this washer and its 1.2 GPM (gallons per minute), is on the lower end of the achievable water flow. For those prioritizing effective debris rinsing, one of the top products in this price range is the AR Blue Clean XM2400, offering a high flow rate of 1.9 GPM.
- Amongst similarly priced electric devices, the 2160 Cleaning Units (PSI X GPM) of the K1800PS rank as low. If you are after the highest overall cleaning power, the BE P1915EN with its 3400 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 electric washers between 2000 and 2500 Cleaning Units, the Karcher K1800PS 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
- ON/OFF pedal
- Onboard storage
- Could include more nozzles
- No detergent dilution mechanism
- 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 |
| Water | Cold (104°F max.) |
| PSI | 1800 |
| GPM | 1.2 |
| Cleaning Units | 2160 |
| Frame | Plastic |
|---|---|
| Handling | Hand Truck |
| Wheels | 2 wheels, ⌀8", never flat |
| Weight | 20.7 lbs |
| Dimensions | Approx. 17.5 x 16.5 x 33.1 in (D x W x H) |
| Hose storage | Dedicated slot (top) |
| Soap injection | Yes |
|---|---|
| Soap tank | 0.3 gal, removable |
| Soap dilution | No |
| Nozzles | 15°, Soap, Turbo |
| Quick connect nozzles | Yes |
| Onboard storage | Yes |
| Hose | 20 ft |
| Security | Trigger lock |
|---|---|
| Included accessories | Wand, spray gun, high pressure hose, garden hose adapter, 35 ft GFCI power cord, 3 nozzles |
| Warranty | 3 years |
| Series | PS |
| Other model numbers | 1.106-201.0 |
| UPC | 886622043218 |
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 Kärcher
Founded in 1935 by Alfred Kärcher, this family-owned business is headquartered in Winnenden, Germany. Credited with developing Europe's first hot water high-pressure washer in 1950, the company continues to pride itself on ingenuity and innovative thinking for new solutions in the cleaning industry. Kärcher also insists on being a socially- and ecologically-sustainable company. The popularity of the brand can be seen by the fact that the name Kärcher has in some European countries become a colloquial term used synonymously with pressure washers.
Warranty Information
The Kärcher K1800PS 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 Kärcher pressure washers, please consult Kärcher's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-800-537-4129.

