| Product | Price, 2026-11-01 | What the maker’s page says |
|---|---|---|
| Greenworks 2,300 PSI 1.2 GPM, Gen 2 | $312.99 | 2,300 PSI at 1.2 GPM; 2.3 GPM at 100 PSI; 14-amp brushless; 25 ft hose [2] |
| Greenworks 2,700 PSI 1.2 GPM | $379.99 | 2,700 PSI at 1.2 GPM; 2.3 GPM at 100 PSI; 14-amp brushless; 25 ft hose [3] |
| Greenworks 3,000 PSI 2.0 GPM, Gen 2 | $349.99 | 3,000 PSI at 1.1 GPM; 2.0 GPM at 100 PSI; 14-amp brushless; 25 ft hose [1] |
The big picture:
Pressure and flow do different jobs, and only one sets how long a surface takes. Pressure is what lifts a stain off concrete or strips a film of algae off siding, while flow is the volume of water carrying that loosened dirt away [1][6]. A nozzle that narrows the spray raises pressure and cuts flow at the same time, so the two headline numbers sit at opposite ends of one setting, not side by side in the middle.
Greenworks writes the condition into the feature list on all three pages, in the same sentence that carries the claim. The 3,000-PSI model reads 3,000 PSI at 1.1 GPM, then adds 2.0 GPM at 100 PSI in brackets, and the two smaller machines do the same with their own figures [1][2][3]. DeWalt prints the same condition in the footnotes of a rival unit: top pressure at the 15-degree nozzle, top flow at the soap nozzle [5]. What I take from that pair of clauses is that each number is true on its own setting, and neither is true of the other.
What moves up the ladder is pressure, from 2,300 to 3,000, while the flow at that pressure stays at 1.2 gallons a minute and then falls to 1.1 at the top [1][2]. All three machines carry a 14-amp brushless motor, a 25-foot hose, a 35-foot cord and five nozzles [1][2][3]. A buyer comparing the three is choosing how hard the water hits, not how fast the work goes.
Popular Mechanics shows how the wording travels. Its review lists the 2,700-PSI Greenworks at 2,700 psi and 2.3 GPM with no condition attached to either, and the same page prices it at $379 [6]. That is not a slip in the review, which also says a 1 GPM machine leaves a big patio or long siding taking a little longer [6]. It is the same pair of numbers the maker prints, minus the clause that explains them.
By the numbers
- $260.83 — Cost per gallon a minute at pressure: the 2,300-PSI machine’s price divided by the 1.2 GPM it delivers at 2,300 PSI, against $316.66 for the 2,700 and $318.17 for the 3,000 at 1.1 GPM [1][2][3].
- $0.117 — Cost per rated PSI: the 3,000-PSI unit is the cheapest per pound of pressure at $0.117, sitting against $0.136 for the 2,300 and $0.141 for the 2,700, because of the deepest markdown in the range [1][2][3].
- 8.3% — Water the top rung gives up: the drop from 1.2 GPM to 1.1 GPM at working pressure, a fall that runs backward against the 30.4% rise in pressure across the ladder [1][2].
- $37.00 — The step that buys less flow: the price gap between the 2,300 and the 3,000, paying for 700 more PSI while losing a tenth of a gallon a minute of water at pressure [1][2].
What I’d watch:
The three machines differ on three points that change the buy, and none is the number on the box. The first is what the water strips: a driveway head and the cheapest machine are matched to each other, since 2,300 PSI is the rating of the brand’s own 12-inch rotating surface cleaner [2][4]. The second is the pace across a surface, where the 2,300 and the 2,700 deliver the same 1.2 GPM and the 3,000 gives up a tenth of a gallon [1][2][3]. The third is what the extra pressure does to soft wood, where a narrower, harder stream marks a deck faster than it cleans it.
I have been watching the sale tags rearrange a lineup that the spec sheet puts in a different order. The 3,000 sits $30.00 below the 2,700 today, and the 2,300 sits $37.00 below the 3,000, so cheapest to dearest reads 2,300, 3,000, 2,700 [1][2][3]. A reader who ranks the boxes by PSI and takes the middle one pays most for the same flow as the cheapest, an inversion that holds only while the sales last. The rest of this vertical’s equipment math sits in outdoor power equipment.
The storefront also sells a second 3,000-PSI listing under an older model number, and that number is what to check at checkout rather than the series name. An older 3,000-PSI listing on the same store sits at $424.99 with the same headline numbers, $75.00 above the Gen 2, and the 2,700 also ships as a bundle with a 15-inch cleaner and a wand extension for $479.98 [1][7].
| The situation | The pick |
|---|---|
| A wood deck, siding and a one-car concrete driveway | The 2,300-PSI Gen 2, the cheapest of the three and the flow match for the surface cleaner [2][4] |
| Stained or heavily weathered concrete, and patience | The 3,000-PSI Gen 2 at its current markdown, run on the narrow nozzle [1] |
| A big patio cleaned in one pass, budget secondary | The 2,700, which holds 1.2 GPM at the highest pressure in that flow band [3] |
The catch
The accessory is the part that breaks the logic of the ladder. Greenworks sells a universal 12-inch rotating surface cleaner for $39.99, and its spec sheet gives the top pressure as 2,300 PSI [4]. That rating matches the cheapest machine exactly and sits 700 PSI below the top rung, so a buyer who wants both has to run the 3,000 at part pressure or accept a head working past its stated limit.
I could be wrong about how much a missing tenth of a gallon matters on a sloped driveway, where water pools and a pass takes longer anyway. What the pages never print is the one number that would settle it: the flow each machine gives through the 15-degree nozzle itself. The maker prints flow at peak pressure and flow at 100 PSI, and nothing in between, so the middle of the curve stays a guess for every buyer, of every brand here.
What we did not test
This review is built from three maker product pages, one rival’s spec page and one publisher’s review roundup; no unit was handled here, nothing was run, and no pressure or flow was measured by this desk. Every PSI and GPM figure belongs to the maker that printed it, under its own stated condition, and the one measured observation in the piece is Popular Mechanics’, attributed to that review. For the cost side of the decision, the true cost of ownership calculator takes a purchase price and a service life, and the outdoor power equipment hub carries the rest of the field.
At a glance
The shift: The manufacturer’s specification separates peak pressure from peak flow, attaching the high flow rate to a low-pressure rinse. The number: 1.1 GPM at 3,000 PSI, trailing the 1.2 GPM delivered by the $312.99 machine below it. The risk: The surface cleaner built for driveway work is rated to 2,300 PSI, leaving it unmatched for the top two machines.
Sources
[1] Greenworks — 3,000 PSI 2.0 GPM Cold Water Electric Pressure Washer (Gen 2), SKU 5128802 / GPW3002A: sale price $349.99 against a $499.99 standing price, “3000 Max PSI at 1.1 GPM water flow (2.0 GPM flow at 100 PSI)”, 14-amp brushless motor, 25 ft hose, 35 ft cord, five nozzles, and the $424.99 prior-generation 5113902 listing card. https://www.greenworkstools.com/products/3000-psi-2-0-gpm-cold-water-electric-pressure-washer (retrieved 2026-11-01)
[2] Greenworks — 2,300 PSI 1.2 GPM Cold Water Electric Pressure Washer (Gen 2), SKU 5128502 / GPW2303A: sale price $312.99, “2300 Max PSI at 1.2 GPM water flow (2.3 GPM flow at 100 PSI)”, 14-amp brushless motor, 25 ft hose, 35 ft cord, five nozzles. https://www.greenworkstools.com/products/2300-psi-1-2-gpm-cold-water-electric-pressure-washer (retrieved 2026-11-01)
[3] Greenworks — 2,700 PSI 1.2 GPM Cold Water Electric Pressure Washer, SKU 5128402 / GPW2702A: sale price $379.99 against a $449.99 standing price, “2700 Max PSI at 1.2 GPM water flow (2.3 GPM flow at 100 PSI)”, 14-amp brushless motor, 25 ft hose, 35 ft cord, five nozzles. https://www.greenworkstools.com/products/2700-psi-2-3-gpm-cold-water-electric-pressure-washer (retrieved 2026-11-01)
[4] Greenworks — Universal 12″ Rotating Surface Cleaner: $39.99, maximum pressure 2,300 PSI, 1/4″ quick connect, dual-nozzle head. https://www.greenworkstools.com/products/12-inch-pressure-washer-surface-cleaner-5207402vt (retrieved 2026-11-01)
[5] DEWALT — DWPW2400 2400 PSI 1.1 GPM Electric Pressure Washer: headline “2400 MAX PSI and 1.1 gpm”, with the footnotes “Maximum psi when used with 15-degree nozzle” and “Maximum GPM when used with soap nozzle”. https://www.dewalt.com/product/dwpw2400/2400-psi-electric-pressure-washer (retrieved 2026-11-01)
[6] Popular Mechanics — The 7 Best Electric Pressure Washers of 2026: the Greenworks 2,700-psi pick listed at $379, its key specs given as 2,700 psi and 2.3 GPM, and the reviewer’s note that a 1 GPM machine leaves a large patio or long siding taking a little longer; page updated 18 August 2026. https://www.popularmechanics.com/home/outdoor-projects/a43931284/best-electric-pressure-washers (retrieved 2026-11-01)
[7] Greenworks — 2700 PSI Pressure Washer, 15″ Surface Cleaner and Extension Combo Kit: $479.98. https://www.greenworkstools.com/products/2700-psi-pressure-washer-w-15-surface-cleaner (retrieved 2026-11-01)
