4.0 GPM or 2.3 GPM Pressure Washers? Compared by Specs
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The choice between a 4.0 GPM and 2.3 GPM pressure washer depends on your cleaning needs. This 40 gpm vs 23 gpm pressure washer comparison highlights two distinct categories. Both units deliver strong water pressure for home maintenance. The main difference lies in their power source and flow rate. One uses gas for industrial strength, while the other offers electric convenience. You must decide which balance of speed and power fits your property.
Key differences
| Aspect | Simpson PowerShot 4400 PSI Gas Pressure Washer | Greenworks 2700 PSI Brushless Electric Pressure Washer |
|---|---|---|
| Power Source | Gas | Electric |
| Maximum Pressure | 4400 PSI | 2700 PSI |
| Flow Rate | 4.0 GPM | 2.3 GPM |
| Pump Type | AAA industrial triplex plunger | Axial cam |
| Hose Length | 50 ft | not listed |
| Nozzle Count | 5 | not listed |
Which one should you choose?
Choose Simpson PowerShot 4400 PSI Gas Pressure Washer if
- You need high-pressure cleaning for large decks or heavy stains
- You want a longer 50-foot hose for extended reach
- You prefer the raw power of a gas engine for professional results
Choose Greenworks 2700 PSI Brushless Electric Pressure Washer if
- You want a lightweight unit that is easy to store
- You prefer quiet electric operation with push-button start
- You need a compact machine for smaller residential tasks
Verdict: The Simpson PowerShot suits contractors and heavy-duty users who need maximum flow and pressure. The Greenworks model is better for homeowners who prioritize portability and ease of use. Choose the gas unit for tough jobs and the electric one for convenience.
4.0 GPM vs 2.3 GPM Specs
Flow Rate
The Simpson PowerShot delivers a steady 4.0 GPM flow rate. This high volume moves dirt away quickly, making it ideal for large decks or driveways. You will rinse faster because more water hits the surface. The Greenworks unit offers a maximum of 2.3 GPM. This lower flow is sufficient for lighter residential tasks like patio furniture or siding. If you need speed and volume for big jobs, the Simpson wins. For smaller areas where water conservation matters, the Greenworks is adequate. The difference in volume is significant for your cleaning time.
Maximum Pressure
Pressure determines how hard the water blasts away stuck grime. The Simpson PowerShot generates 4400 PSI. This high pressure cuts through tough oil stains and deep-set mud. The Greenworks Brushless model provides 2700 PSI. While lower, this level still handles common household dirt effectively. The Simpson has a clear advantage for heavy-duty cleaning. You will need the extra PSI to strip paint or clean concrete. The Greenworks pressure is better for delicate surfaces that might get damaged by high force. Choose based on how tough your stains are.
Power Source
Power source affects where you can use the machine and how you start it. The Simpson is a gas model with a 420cc CRX engine. You need fuel and oil, but you get unlimited runtime anywhere. The Greenworks is electric with a brushless motor. You plug it in for quiet, zero-emission operation. No gas mixing or pull-starting is needed. The Greenworks wins for ease of use and convenience. You can start it with a push button. However, the Simpson offers mobility without a cord. Your choice depends on access to electricity and power needs.
Hose Length
Hose length determines your reach without moving the unit. The Simpson includes a 50-foot high-pressure hose. This length lets you clean far from your outlet without dragging the machine. The Greenworks hose length is not listed in the provided data. You must check the box or manual for that specific measurement. Without this data, we cannot compare reach directly. However, 50 feet is a generous standard for professional work. If the Greenworks hose is shorter, you will move it more often. The Simpson has a known advantage in reach.
Nozzle Count
Nozzles change the spray pattern for different tasks. The Simpson comes with five quick-connect nozzle tips. You get 0°, 15°, 25°, 40°, and Soap settings. This variety covers everything from stripping paint to gentle rinsing. The Greenworks features included nozzles that adjust flow from 1.2 GPM to 2.3 GPM. Specific angle counts are not listed in the data. The Simpson provides a wider array of fixed spray patterns. You have more control over the spray width. The Greenworks focuses on flow adjustment rather than distinct angle tips. The Simpson offers more versatility for varied cleaning needs.
Which 4.0 GPM or 2.3 GPM unit fits you
Contractors needing high-volume rinsing power
The Simpson PowerShot delivers 4.0 GPM and 4400 PSI. This combination moves large volumes of water quickly, ideal for stripping paint or cleaning expansive decks. Its 420cc gas engine and industrial triplex pump provide the sustained power professionals require for heavy-duty daily tasks across various terrains.
Homeowners wanting easy electric storage
The Greenworks unit weighs just 50.7 pounds and measures 23 inches high. Its electric brushless motor eliminates gas maintenance. With 2700 PSI and up to 2.3 GPM, it handles typical residential chores like patios and cars. The compact design makes it simple to store in a garage or shed.
Users prioritizing portability and low weight
Weighing under 51 pounds, the Greenworks is significantly lighter than the 135-pound Simpson. Its smaller footprint and electric start offer effortless maneuverability. You avoid the hassle of fuel management and heavy lifting. This makes it suitable for users who need a lightweight tool for occasional, moderate cleaning jobs.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Simpson PowerShot 4400 PSI Gas Pressure Washer | professional deck cleaning and paint preparation | Check price of Simpson PowerShot 4400 PSI Gas Pressure Washer on Amazon |
| 2 | Greenworks 2700 PSI Brushless Electric Pressure Washer | Residential electric cleaning with adaptive power | Check price of Greenworks 2700 PSI Brushless Electric Pressure Washer on Amazon |
The products compared
Simpson PowerShot 4400 PSI Gas Pressure Washer
Best for: professional deck cleaning and paint preparation
- Flow Rate
- 4.0 GPM (what this guide is about)
- Maximum Pressure
- 4400 PSI
- Power Source
- Gas
- Engine Displacement
- 420cc
- Hose Length
- 50 ft
- Nozzle Count
- 5
View on Amazon: Simpson PowerShot 4400 PSI Gas Pressure Washer Affiliate link
This gas-powered unit delivers 4400 PSI and 4.0 GPM via a CRX 420cc engine and AAA industrial triplex plunger pump. The high flow rate cleans faster than lower-GPM models. It includes a 50-foot hose and five quick-connect nozzles. The welded steel frame and pneumatic tires aid mobility. It suits contractors needing professional-grade power for decks and paint prep.
Pros
- 4.0 GPM flow rate for faster cleaning
- 4400 PSI maximum pressure with PowerBoost Technology
- AAA industrial triplex plunger pump with thermal relief
- 50-foot kink-resistant high-pressure hose included
- Five quick-connect nozzle tips for various tasks
Cons
- 135-pound weight makes it heavy to lift
- Does not ship to California due to 49-State compliance
- Gas engine requires fuel maintenance and storage
Good fit if
- You need high flow rate for large areas
- You require professional-grade pressure for tough jobs
- You prefer gas power for unrestricted mobility
Skip if
- You live in California and cannot receive shipments
- You want a lightweight unit for easy carrying
- You prefer electric power sources for quiet operation
Verdict: Simpson PowerShot 4400 PSI Gas Pressure Washer is built for contractors who need 4.0 GPM and 4400 PSI for heavy-duty cleaning. It fits those who prioritize speed and durability over portability.
Greenworks 2700 PSI Brushless Electric Pressure Washer
Best for: Residential electric cleaning with adaptive power
- Flow Rate
- 2.3 GPM (what this guide is about)
- Maximum Pressure
- 2700 PSI
- Power Source
- Electric
- Pump Type
- Axial cam
- Color
- Green
- Dimensions
- 19 × 35.4 × 23 inches
View on Amazon: Greenworks 2700 PSI Brushless Electric Pressure Washer Affiliate link
This Greenworks unit delivers 2700 PSI and 2.3 GPM for residential cleaning. The brushless motor adapts power to the nozzle, while Jettflow technology boosts flow. It weighs 50.7 pounds and measures 35.4 inches wide. You get push-button start and a cast aluminum pump. It suits users who want electric convenience with decent flow for decks and siding.
Pros
- 2.3 GPM flow rate for faster rinsing
- Brushless motor adapts power to nozzle selection
- Jettflow technology increases flow by up to 50%
- Cast aluminum axial cam pump for durability
Cons
- 2700 PSI is lower than the 4400 PSI competitor
- 2.3 GPM is lower than the 4.0 GPM competitor
- Electric power source requires an outlet
Good fit if
- You prefer electric power over gas
- You need a lighter unit under 51 pounds
- You clean decks and siding regularly
Skip if
- You need 4.0 GPM for heavy duty jobs
- You require high PSI for concrete stripping
- You want gas-powered mobility
Verdict: Greenworks 2700 PSI 2.3 GPM Electric Pressure Washer fits homeowners who value quiet electric operation and adaptive motor power over raw pressure and flow rates found in gas models.
Specifications side by side
| Spec | Simpson PowerShot 4400 PSI Gas Pressure Washer | Greenworks 2700 PSI Brushless Electric Pressure Washer |
|---|---|---|
| Maximum Pressure | 4400 PSI | 2700 PSI |
| Flow Rate | 4.0 GPM | 2.3 GPM |
| Power Source | Gas | Electric |
| Engine Displacement | 420cc | not stated |
| Hose Length | 50 ft | not stated |
| Nozzle Count | 5 | not stated |
| Pump Type | Triplex plunger | Axial cam |
| Pressure | 4400 PSI | not stated |
| Color | Black | Green |
| Dimensions | 8 × 3 × 50 inches | 19 × 35.4 × 23 inches |
| Weight | 135 pounds | 50.7 pounds |
| Size | 4400 psi At 4.0 GPM | 2700 PSI (New) |
| Model | PS60843 | GPW2702A |
Frequently asked questions
Is 4.0 GPM better than 2.3 GPM for cleaning driveways?
Yes, 4.0 GPM cleans driveways faster. The Simpson PowerShot delivers 4.0 GPM and 4400 PSI. This high volume moves dirt away quickly. You rinse expansive surfaces in less time. The Greenworks 2.3 GPM model is slower for large areas. It suits smaller residential tasks instead.
Which pressure washer is lighter to move around?
The Greenworks 2700 PSI model is lighter. It weighs 50.7 pounds. The Simpson PowerShot weighs 135 pounds. You will find the electric unit easier to carry up stairs. The gas model is built for durability over portability. Choose the lighter option for frequent relocation.
Does a higher GPM mean more cleaning power?
Higher GPM means faster rinsing, not just pressure. The Simpson PowerShot combines 4400 PSI with 4.0 GPM. This removes paint and heavy grime efficiently. The Greenworks offers 2700 PSI and 2.3 GPM. It provides adaptive power for home maintenance. Both clean well, but the 4.0 GPM unit works faster.
Can I use a 2.3 GPM washer for deck staining prep?
You can, but it takes longer. The Greenworks 2.3 GPM washer fits residential electric cleaning. It offers adaptive motor power for home use. The Simpson 4.0 GPM is built for professional deck cleaning. It strips paint and prepares surfaces faster. If time matters, choose the higher flow rate.
What is the size difference between these two units?
The Simpson PowerShot is much larger. It measures 50 inches in height and weighs 135 pounds. The Greenworks unit is 23 inches high and weighs 50.7 pounds. The electric model has a smaller footprint. You save space storing the Greenworks unit. The gas model requires more room.
Is gas power better than electric for high flow rates?
Gas power supports higher flow rates here. The Simpson PowerShot uses a gas engine for 4.0 GPM. It suits contractors needing speed and durability. The Greenworks uses an electric motor for 2.3 GPM. It is quieter and lighter. Choose gas for heavy duty work. Choose electric for quiet residential tasks.