The catch
Greenworks 2300 PSI Brushless Electric Pressure Washer
The advertised figures of 2300 PSI and 2.3 GPM come from different operating points.
Side by side
Greenworks GPW2303A vs Westinghouse ePX3500 compared: Large wheels or swiveling driveway casters, with the same rated flow
Quick verdict
The Greenworks GPW2303A fits a car-and-patio routine that includes rougher ground, where its large wheels come in useful. The Westinghouse ePX3500 fits a low, compact machine that rolls on four swivel casters. Both have the same rated flow of 1.2 GPM at different working pressures, so the larger maximum numbers should not settle the purchase.
Before you buy
Why, and what it costs you
Look at pressure with flow kept equal
Both deliver 1.2 GPM at their stated working points, and the Greenworks runs 300 PSI higher than the ePX3500. That is a 15% gap in pressure and does not prove a patio cleans 15% faster.
Where this comes from
(2,300 - 2,000) / 2,000 = 15%. Results also depend on the surface, nozzle, distance and accessory compatibility.
The catch
Westinghouse ePX3500 Electric Pressure Washer
The manufacturer lists 2500 PSI/1.76 GPM as maximums and 2000 PSI/1.2 GPM as the rated point. Independent measurements came in lower still.
Greenworks 2300 PSI Brushless Electric Pressure Washer
- Why pick it
- The unit has to roll over joints or uneven outdoor paths
- 2,300 PSI at the stated 1.2 GPM working point is what you want
- The catch
- The advertised figures of 2300 PSI and 2.3 GPM come from different operating points.
Westinghouse ePX3500 Electric Pressure Washer
- Why pick it
- Most of your work is on a smooth driveway
- You'd find a 19-pound, low-profile unit easier to store and move
- The catch
- The manufacturer lists 2500 PSI/1.76 GPM as maximums and 2000 PSI/1.2 GPM as the rated point. Independent measurements came in lower still.
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What this page compares
Greenworks GPW2303A and Westinghouse ePX3500 compared on car and patio jobs, uneven paths and working-pressure figures that are fair to both.
The Greenworks GPW2303A fits a car-and-patio routine that includes rougher ground, where its large wheels come in useful. The Westinghouse ePX3500 fits a low, compact machine that rolls on four swivel casters. Both have the same rated flow of 1.2 GPM at different working pressures, so the larger maximum numbers should not settle the purchase.
Which one fits
Pick the situations that sound like you
Uneven joints between the car area and the patio
Large 10-inch transport wheels carry the Greenworks.
- Greenworks 2300 PSI Brushless Electric Pressure Washer
- Better fit
- Westinghouse ePX3500 Electric Pressure Washer
- Depends
Working around a car over smooth paving
The Westinghouse rolls on four swivel casters that lock.
- Greenworks 2300 PSI Brushless Electric Pressure Washer
- Good
- Westinghouse ePX3500 Electric Pressure Washer
- Better fit
A small unit that lives under a low shelf
Listed height for the ePX3500 is 16.5 inches.
- Greenworks 2300 PSI Brushless Electric Pressure Washer
- Depends
- Westinghouse ePX3500 Electric Pressure Washer
- Better fit
Expecting 2.3 GPM at the Greenworks's full pressure
100 PSI is where the 2.3-GPM figure is published.
- Greenworks 2300 PSI Brushless Electric Pressure Washer
- Not suitable
- Westinghouse ePX3500 Electric Pressure Washer
- Depends
Fragile painted finishes
Respect the surface maker's cleaning limits and a suitable nozzle distance.
- Greenworks 2300 PSI Brushless Electric Pressure Washer
- Caution
- Westinghouse ePX3500 Electric Pressure Washer
- Caution
In practice
Differences you will notice
Look at pressure with flow kept equal
Both deliver 1.2 GPM at their stated working points, and the Greenworks runs 300 PSI higher than the ePX3500. That is a 15% gap in pressure and does not prove a patio cleans 15% faster.
How we worked this out
(2,300 - 2,000) / 2,000 = 15%. Results also depend on the surface, nozzle, distance and accessory compatibility.
The headline flow figure is tied to gentle pressure
The Greenworks lists 2.3 GPM at 100 PSI, which is distinct from its 2,300-PSI cleaning point. Multiplying 2,300 by 2.3 would imply a working condition that the listed data does not back up.
How we worked this out
Each of the manufacturer's two operating points stays on its own here. Likewise, the ePX3500's maximum pressure and maximum flow are not taken to occur together.
Your route may decide more than the pressure gap
On smooth paving around a car, the swivel layout of the ePX3500 can be handy. Once you also have to get from that car to a patio across uneven joints, handling is a different problem, and the Greenworks's 10-inch wheels give you a stronger reason to pick it.
How we worked this out
The handling point is inferred from wheel size and arrangement. No rolling-resistance measurement backs it.
Option A
Greenworks, GPW2303A
2300 PSI Brushless Electric Pressure Washer
Brushless electric washer with a folding wheeled frame and an onboard soap tank. Two documented output modes cover pressure washing and rinsing.
- Best for
- The unit has to roll over joints or uneven outdoor paths
Facts we checked
- Published working points for comparison: 2,300 PSI at 1.2 GPM
- Maximum or low-pressure figures listed separately: 2.3 GPM at 100 PSI
- Transport layout: An upright frame on two 10-inch wheels
- Hose and power-cord lengths: A 25-foot hose and a 35-foot GFCI cord
Option B
Westinghouse, ePX3500
ePX3500 Electric Pressure Washer
Low and stable on four wheels, this electric has a built-in soap tank and a compact footprint, and it trails you as you work around a vehicle.
- Best for
- Most of your work is on a smooth driveway
Facts we checked
- Published working points for comparison: 2,000 PSI rated, at 1.2 GPM
- Maximum or low-pressure figures listed separately: 2,500 PSI max and 1.76 GPM max
- Transport layout: A low profile with four locking swivel casters
- Hose and power-cord lengths: A 25-foot hose and a 35-foot GFCI cord
Spec by spec
Where they really differ
| Spec | Greenworks 2300 PSI Brushless Electric Pressure Washer | Westinghouse ePX3500 Electric Pressure Washer | In practice |
|---|---|---|---|
| Comparable published working points | 2,300 PSI at 1.2 GPM | 2,000 rated PSI at 1.2 GPM | At the same stated flow, the Greenworks puts out 15% more pressure. |
| Separate maximum or low-pressure figures | 2.3 GPM at 100 PSI | 2,500 max PSI and 1.76 max GPM | Maximum values that do not occur together should never be multiplied. |
| Transport layout | Two 10-inch wheels and upright frame | Four locking swivel casters and low profile | How the machine gets around the work area depends on its wheel layout. |
| Hose and power-cord lengths | 25-foot hose, 35-foot GFCI cord | 25-foot hose, 35-foot GFCI cord | These listed lengths give neither unit a reach advantage. |
| Detergent handling | Onboard soap tank | 20-ounce onboard soap tank | Choose a compatible pressure-washer detergent and the right application setting. |
| ePX3500 storage reference | Check the full Greenworks assembled size | 19 lb and 16.5 inches high | Storage is where the Westinghouse's compact shape makes a real difference. |
Trade-offs
What each pick costs you
With Greenworks 2300 PSI Brushless Electric Pressure Washer
- Compared with a compact carry-handle washer, the wheeled frame needs more space.
With Westinghouse ePX3500 Electric Pressure Washer
- Its small 360-degree wheels work very well on flat paving and badly on rough ground in the yard. Assembly is also more work than with cube models.
Change of plan
When the answer changes
My washer has to travel over rough ground outside
Go with Greenworks 2300 PSI Brushless Electric Pressure Washer. The Greenworks rolls on 10-inch transport wheels.
I'd like a low, compact unit for use on smooth paving
Go with Westinghouse ePX3500 Electric Pressure Washer. A low-profile 19-pound body on swivel casters is what the ePX3500 offers.
Decision guide
How to decide
Go with the Greenworks GPW2303A if your car-and-patio routine takes in rougher ground where its large wheels help. Go with the Westinghouse ePX3500 for a low, compact machine on four swivel casters. The rated flow is the same 1.2 GPM at different working pressures, so the bigger maximum numbers should not decide the purchase.
Think through the route between the two jobs
The same machine can clean a car and paving if you change the settings. How you move it between those jobs matters as well. The low ePX3500 suits a smooth driveway, and on a rougher path the Greenworks's larger wheels have a practical edge.
Don't confuse working flow with the headline on the box
Each publishes a 1.2-GPM working point. At that flow the Greenworks reaches a higher pressure, while its 2.3-GPM figure applies to low-pressure delivery. Any surface-cleaner attachment still has to match the machine's working flow and pressure.
Go gentler around the vehicle
Misused, pressure that helps on sound paving can damage paint, seals or trim. Switch to a nozzle and distance that suit the surface, test a discreet area, and do not treat turbo mode as an all-purpose setting. Each machine needs an appropriate water supply and a safe electrical setup.
What this page can’t tell you
- Nothing here claims a matched test of cleaning time or durability.
- What is said about wheel handling is inferred from the design and not measured on terrain.
By the numbers
What the data shows
What we found across the pressure washers we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Greenworks 2300 PSI Brushless Electric Pressure Washer |
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| Westinghouse ePX3500 Electric Pressure Washer |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Greenworks 2300 PSI Brushless Electric Pressure Washer
The unit has to roll over joints or uneven outdoor paths
See price & reviews on AmazonWestinghouse ePX3500 Electric Pressure Washer
Most of your work is on a smooth driveway
See price & reviews on AmazonEach link opens in a new tab.
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