Pressure washer guide
Greenworks 1800 PSI 1.1 GPM Electric Pressure Washer (SKU 5110202, GPW1804TN)
Light home cleaning of cars, furniture and grills with auto start-stop
Greenworks' SKU 5110202, model GPW1804TN, is a 13 amp corded pressure washer rated at 1800 PSI and 1.1 GPM, with a 20-foot hose, GFCI plug, soap tank and auto start-stop. The manual's packing list names a 40 degree and a turbo nozzle, while Greenworks' page says four nozzles. Warranty is three years for personal use.
Listing checked . Confirm the model, included parts and availability before ordering.
Published specifications
- Manual: 1800 PSI max; 1.1 GPM rated; 13 A
- Greenworks: 20 ft hose; quick-connect wand; PWMA
- Manual: auto start-stop on trigger
- Manual: inlet water no hotter than 104 F
- Manual: 40 degree and turbo nozzles; soap tank
- Manual: 3-year warranty, personal use only
Fit and limits
Strengths
- Auto start-stop runs the motor only while the trigger is squeezed
- Soap tank applies detergent at low pressure, per the manual
- Three-year warranty stated by Greenworks' page, manual and listing
Caveats
- Page and manual disagree on how many nozzles are in the box
- The manual PDF includes a quick start sheet for a different 1700 PSI model
- Warranty covers personal use only, not hired or rented units
Which Greenworks washer this is
The Amazon listing identifies this washer only by 5110202. On Greenworks' own site that is the SKU of its 1800 PSI 1.1 GPM Cold Water Electric Pressure Washer, whose model number is GPW1804TN, and the manual linked from that page is the GPW1804TN owner's manual. The two numbers refer to the same product page.
The manual's specifications list a 120 volt, 60 Hz, 13 amp universal motor, 1800 PSI maximum pressure, 1.1 GPM rated flow, a maximum inlet water temperature of 104 degrees Fahrenheit and 1980 cleaning units. Greenworks' page and the listing agree on 1800 PSI and 1.1 GPM.
Greenworks' page lists a 20-foot hose with reel, a quick-connect wand with the 40 degree and turbo nozzles, onboard tool storage and PWMA certification. The listing gives a 35-foot power cord with a GFCI plug; the manual describes the GFCI plug and says it does not protect against short circuits, overloads or shocks.
What is in the box: the documents count nozzles differently
The manual's packing list is the washer, a soap tank, the trigger assembly, a spray wand, a 40 degree nozzle, a turbo nozzle, a spray tip cleaning tool, the high-pressure hose, the operator's manual and a quick start guide. Greenworks' key features also mention the 40 degree and turbo nozzles.
Greenworks' what's-included list, however, says four spray nozzles, and its additional details mention multiple wand tips and soap nozzles and an onboard soap tank. The Amazon bullets list a gun, a 40 degree nozzle, a turbo nozzle, a soap applicator and a 20-foot hose.
The PDF manual on Greenworks' page also contains a quick start sheet headed for a 1700 PSI, 1.2 GPM model, GPW1704, alongside the GPW1804TN pages. That sheet is for another model, so check the contents of your box against the GPW1804TN packing list.
Auto start-stop and daily use
The manual describes an auto start-stop feature. With the power switch on, the pump pressurises and shuts down; squeezing the gun trigger starts the motor, and releasing it puts the washer in standby. The manual notes that the system may be pressurised even when the motor cannot be heard.
The manual requires air to be bled from the lines, with the motor off, until the water runs in a steady stream, and warns never to run the pump without the water supply on. We do not reproduce the start-up steps; they are in the owner's manual.
Detergent goes in the soap tank and is applied at low pressure and high volume. The manual says to use only detergents made for pressure washers, and not bleach, chlorine or acid cleaners.
Power, hose and pressure problems
The manual asks for a 120 volt, 60 Hz household AC supply, warns about voltage drop, and recommends a drip loop in the cord. The quick start sheet in the same PDF, headed for the GPW1704, says an extension cord is not recommended; the GPW1804TN pages list an extension cord among the troubleshooting causes.
If the washer does not reach high pressure, the troubleshooting table points to a garden hose that is too small and recommends a 1 inch or 5/8 inch hose. It also lists the water supply, the spray tip, supply voltage and residual pressure among the things to check.
A pulsing feeling at the trigger can mean a clogged or dirty spray tip. The manual describes clearing it with the supplied cleaning tool and back-flushing it with a garden hose.
Storage and winter
Store the washer in a dry, covered, frost-free area, the manual says, after emptying water from all hoses, the pump and the detergent container. It also recommends a pump saver or pump protector product.
The manual includes a quick-winterizing routine, which this page does not reproduce. It asks you to store the washer and accessories where temperatures stay above freezing, but not near a furnace or other heat source, which it says may dry out the pump seals.
The manual says the only parts a customer should replace are the ones in its parts list. It also warns that the system may still be under pressure when the motor is silent, which is covered in the section on the auto start-stop feature.
Warranty and who this suits
The manual's warranty covers the original purchaser, with proof of purchase, for three years, with repair or replacement. It applies only to personal use, not units hired or rented for industrial or commercial use, and the purchaser pays transport unless Greenworks requests the return in writing.
Exclusions include misuse, abuse, neglect, accident, improper maintenance, alteration, normal wear and routine maintenance items. Greenworks' page and the Amazon listing also give a three-year limited warranty.
The manual's applications list includes cars, trucks, motorcycles, boats, furniture, grills, siding, driveways, patios and decks, and the listing calls it light-duty. It suits you less if you want several fan nozzles for different surfaces, since the manual's packing list names only a 40 degree and a turbo nozzle.
Check the current listing
Confirm the model, included parts and availability before ordering.
Primary sources
- Greenworks product page for the 1800 PSI 1.1 GPM Cold Water Electric Pressure Washer, SKU 5110202, model GPW1804TN
- Greenworks GPW1804TN owner's manual (P0802015-00), linked from the product page
Primary sources checked .
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