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Comet KT1800 EXTRA cold water pressure washer with hose reel

Axial Pump
Pump head material
Hourly Flow Rate max
550 L/h
Max pressure
160 bar
Hose reel
Rotating nozzle
with additional lance
Detergent tank capacity
Weight for symbol
25 kg
Manufacturing Country
Detergent tank
Free water supply connection kit
FREE ITEMS: protection and storage tarp cover
Free water supply connection kit
FREE ITEMS: protection and storage tarp cover
€ 448,33
VAT Included
Prompt Delivery
5 items in stock
Free Shipping
You should receive it by 24/05/2021
ID: K502840

EAN: 8080546006805

MPN: 9053000200

Comet KT 1800 Extra

Kaercher K5 Premium Full Control cold pressure washer with Home Kit included on standard kit has been re-designed compared to previous Kaercher Series. These pressure washers are designed to give you extra ease of use and efficiency.

This Series comes with "Home Kit" which includes T-Racer T350 Patio Cleaner attachment with pressure knob and No. 1 detergent bottle.

The Full Control Power Gun allows checking its main functions. The LED display shows the pressure setting: this will guide you to the ideal results in every cleaning task.

K5 models are versatile pressure washers thanks to their high-pressure hose guidance system, an increased foot plate and handy telescopic handle.

Reliable products

Unlike many “disposable” products on market, by choosing a Kärcher product you will have:

  • Service Center on the territory.
  • disponibilità dei ricambi
  • Spare parts availability.
  • Long life product.

Water system connection kit.

The Pump and the Motor

Pressure: max 145 bar.

Flow rate: 8.33 L/min (500 L/h).

WCM induction water cooled down motor.

Unlike the other high pressure washers on market, the Kärcher ones have an innovative water cooling down system of the motor instead of the fan one. This water cooled system is a Kärcher exclusive and it is not present on any other pressure washer on market.

Alumium pump.

The alumnium it is made of, makes the pump light and resistant in the same time.

Pressure is very important for a pressure washer. Flow rate is even more important: very often, the low cost products have a big pressure but a low flow rate making these products inefficient. A minimum satisfactory flow rate must be at least 350 L/h.

Other features

Easy controls.

Quick connect system quick gun’s hoses connections. Very easy fast unblock with one only button.

“Total stop” system:
When released the water spraying button is off, machinery immediately switches off, switching on again when the user starts again the job. The advantages are:

  • Over heating prevention.
  • Pump’s life lengthening.
  • Consumption reducing.

High pressure hose guide.

Gun’s housing.

Rear tools compartment.

Telescopic handle for transport.

Water system linkage hose with end filter.

Useful wheels for transport.

Plug’n Clean system for detergent input:

  • More easy to use.
  • Decreases wastefulness.
  • You can replace detergent anytime.

With the Kärcher pressure washers is possible to use both Kärcher and other brands detergents. In this second case, detergent must be poured inside the Kärcher detergent’s bottle.

Assembly and equipment

The high pressure washer arrives already assembled and ready for use in its original package Only handles and wheels steel remain to be mounted.

On standard equipment:

  • Full Control gun.
  • 8 m high pressure gun.
  • Rotating nozzle.
  • Vario-power spray lance.
  • T-Racer T350 surface cleaner with double extension hose.
  • No. 1 detergent bottle.
Product Features
KT 1800 Extra
Function :
Cold water
Detergent distribution:
Low pressure
Integrated air compressor:
After-sales service:
DTS - double pump and engine:
Manufacturing Country:
Motor data
Motor type:
Electric single-phase
Double electric engine:
Motor Speed (RPM):
2800 RPM
Max power absorption:
2.7 Kw
Cooling down:
Manufacturing Country:
Pump data
Pump brand:
Pump type:
3 axial cylinders
Axial Pump:
Pump speed number:
Pistons material:
Pump head material:
Brass head:
Max flow Rate:
9.2 L/min
Hourly Flow Rate max:
550 L/h
Operating Pressure:
160 bar
Max pressure:
160 bar
Pressure Regulator:
Plug 'n' Clean detergent tank:
Detergent tank:
Detergent tank capacity:
Detergent adjuster:
extractable handle:
External detergent suction hose:
Quick connection:
Hose reel:
Hose holder:
Total Stop:
Easy Start:
Tools compartment:
Power cable holder:
Free gifts/extra features
Surface Cleaner:
Professional Gun:
Adjustable nozzle spray lance:
Lance with nozzle's quick fixing:
Professional lance:
Rotating nozzle:
with additional lance
Rotating nozzle:
Pressure hose:
12 m
Fixed water-brush:
Rotating water-brush:
Instructions manual:
Dimensions and logistics
Product dimensions cm (LxWxH):
40 x 41 x 91 cm
Net weight:
25 Kg
On pallet
Packaging dimensions cm (LxWxH):
46 x 36 x 67 cm
Gross weight (packaging incuded) :
27 Kg
Assembly time:
15 minutes

For Free

WATER CONNECTION KIT for pressure washer


  • Yellow tube Ø 15 mm, length 15 mt
  • Male quick connector for tap connection (size of the standard thread: 3/4 “)
  • Standard female quick connector (to insert the hose into the male quick connector for tap connection)
  • Female quick connector with WATERSTOP (to be put at the lower end of the hose for connecting it to the pressure washer). Waterstop system: when the pressure washer, or another device is disconnected, the water flow stops automatically; when the pressure washer is re-connected, the water starts to flow again. This allows to avoid going to the tap every time you disengage the female connector from the pressure washer and at each change of accessories.

  • Plastic adjustable lance with male quick connector.

    It is possible to connect it to the hose when the pressure washer is stored, to use it universally. Useful also for irrigation operations. It is equipped with adjustable nozzle (direct or cone).

    Useful also for the rinsing of a surface before spreading the detergent for the next wash with a pressure washer.

Fittings and hose connection diagram of this optional accessory (water connection kit)

Protection and Storage Cover for Pressure Washers - Size: - Medium

Essential for protecting your machine when stored.

Questo cloth is quick and easy to apply; in a few seconds, your machine will be protected against dust and humidity.

It is equipped with an elastic band on the lower border to perfectly fit to the shape of the machine.

Easy to fold and store in its box and space-saving!

Standard equipment

The high pressure washer arrives already assembled and ready for use in its original package. Only handles and wheels steel remain to be mounted. Assembly instructions.

  • Rotating nozzle Lance: rotary nozzle (rotating pencil jet) ideal for cleaning any kind of surface.
  • High pressure Full Control gun with adjustable jet.
  • 8 m high pressure hose and 3/4"garden hose adapter.Vario Power Lance: no stop pressure adjustment by means of the lance rotation.
  • T-Racer T350 surface cleaner with double extension hose.
  • 1 litre detergent bottle

For Free

WATER SYSTEM LINKAGE KIT for pressure washer


  • Ø 15 mm yellow hose, 15 mt length
  • Male quick joint for the faucet joint (3/4" standard threading measure)
  • Standard quick female joint (to connect the hose to the quick male faucet's connection)
  • Female standard quick joint (for the male faucet joint). Acquastop system: if the pressure washer or another tool is disconnected the water flow imemdiately stops; when the pressure washer is connected again the water flows. This avoid you to close the faucet any time you need to change the accessory or any time you unfasten the female pressure washer's joint.

  • Plastic adjustable lance with male quick joint.

    It can be connected to the hose when the pressure washer is not used for a universal employ.

    Useful to wash a surface before the pressure washer's use..

Connections and hoses linkage diagram.

FREE ITEM: Protection and storage cover for pressure washers

FREE ITEM: Protection and storage cover for pressure washers

Essential to protect your pressure washer when not in use.

This cover is easy to apply. You'll be able to protect your pressure washer from dust and humidity in a jiff.

Thanks to the elastic lower edge it will adhere perfectly to the lower area of the pressure washer body.

Easy to fold. You can put it back in its box and it takes up very little space!