When it comes to tackling tough outdoor cleaning jobs, gas pressure washers deliver the power you need. Ideal for blasting away dirt, grime, and stubborn stains on driveways, decks, siding, and more, these machines offer superior mobility and cleaning performance compared to electric models. Whether you’re a homeowner or a contractor, the best gas pressure washers combine strong PSI output, durable construction, and easy-start engines to get the job done quickly and efficiently.
| Our Top 7 Picks | BUYING LINK |
|---|---|
| 1. WEN (PW224G) Gas Pressure Washer | Check Today’s Price on Amazon |
| 2. Westinghouse WPX3400 Pressure Washer | Check Today’s Price on Amazon |
| 3. SIMPSON Cleaning PS60843 PowerShot | Check Today’s Price on Amazon |
| 4. DEWALT 61092 Gas Pressure Washer | Check Today’s Price on Amazon |
| 5. SIMPSON ALH3425 Pressure Washer | Check Today’s Price on Amazon |
| 6. Northstar Gas Pressure Washer | Check Today’s Price on Amazon |
| 7. Greenworks GPW2003 Pressure Washer | Check Today’s Price on Amazon |
1. WEN 3400 PSI Gas Pressure Washer (PW224G)
The WEN PW224G is a heavy-duty gas pressure washer built to handle tough outdoor cleaning tasks with ease. With a powerful 223cc engine and a 2.7 GPM flow rate, it offers impressive cleaning performance for driveways, decks, vehicles, and more. Its user-friendly design and range of accessories make it a great option for both residential and light commercial use.
Key Features:
- 223cc 4-stroke OHV engine delivering 3400 PSI and 2.7 GPM
- Five quick-connect nozzles: 0°, 15°, 25°, 40°, and soap
- Durable axial cam pump for reliable spray performance
- Onboard soap tank and 0.7-gallon fuel tank
- 25-ft reinforced hose and quick-connect spray gun
- 12-inch never-flat wheels for easy transport
- Backed by a 3-year warranty
Pros:
- High PSI and GPM ideal for demanding jobs
- Multiple spray tips for versatile cleaning
- Easy mobility with large wheels
- Long hose for extended reach
- Includes soap tank and accessories
Cons:
- Louder than electric models
- Heavier and bulkier to store
- Requires regular engine maintenance
2. Westinghouse WPX3400 Gas Pressure Washer, 3400 PSI and 2.6 Max GPM.
Built for serious outdoor cleaning, the Westinghouse WPX3400 offers 3400 PSI of water pressure and a 2.6 GPM flow rate to tackle tough grime on driveways, siding, patios, and more. With a rugged build, powerful 212cc engine, and versatile nozzle set, it’s a reliable choice for homeowners who need high-performance cleaning in a durable and easy-to-use package.
Key Features:
- 212cc 4-stroke OHV engine with recoil start
- 3400 PSI and 2.6 GPM max water flow
- 5 quick-connect nozzles: 0°, 15°, 25°, 40°, and soap
- 25-ft abrasion-resistant Super-Flex hose
- Maintenance-free axial cam pump
- Onboard 0.5-gallon soap tank and 1-gallon gas tank
- Durable steel frame and 12″ never-flat wheels
- Compatible with accessories like surface and foam cleaners
- 3-year limited warranty
Pros:
- Powerful engine ideal for deep cleaning
- Wide range of compatible accessories
- Durable construction with easy maneuverability
- Long hose with flexible, kink-resistant design
- Includes oil, tools, and quick-start guide for fast setup
Cons:
- Slightly lower GPM than some competitors
- Can be noisy during operation
- May emit fuel odor due to factory testing
3. SIMPSON Cleaning PS60843 PowerShot 4400 PSI Gas Pressure Washer
Engineered for professional-grade cleaning, the Simpson PowerShot PS60843 is a powerhouse gas pressure washer built to handle demanding jobs. With a robust 420cc CRX engine, 4400 PSI, and 4.0 GPM flow rate, this unit delivers serious performance for contractors and pros tackling tough surfaces like decks, driveways, and siding. It’s a reliable, heavy-duty choice for serious users.
Key Features:
- CRX 420cc premium engine with easy-start design
- Delivers 4400 PSI and 4.0 GPM for high-powered cleaning
- AAA industrial triplex plunger pump with PowerBoost Technology
- Thermal relief system to prevent overheating
- 5 Quick-connect nozzles: 0°, 15°, 25°, 40°, and soap
- 50-ft kink- and abrasion-resistant Monster hose
- Ergonomic spray gun with 31″ steel wand
- Heavy-duty welded steel frame with 13″ pneumatic tires
- 49-state compliant (not for CA use)
Pros:
- Extremely powerful – ideal for commercial/professional use
- Long, durable hose offers great reach and flexibility
- High GPM and triplex pump ensure efficient water flow
- Built tough for use on job sites and rugged terrain
- Includes premium accessories and nozzle set
Cons:
- Overkill for light or casual home use
- Heavier and less compact than residential units
- Not CARB-compliant (not suitable for sale in California)
4. DEWALT 61092 3400 PSI 2.5 GPM Pressure Ready Gas Pressure Washer
Built for power and durability, the DEWALT 61092 delivers 3400 PSI at 2.5 GPM, making it a solid choice for both professional and residential cleaning jobs. With easy setup, dependable performance, and rugged construction, it handles everything from dirty driveways to heavy equipment with confidence and ease.
Key Features:
- CETA-certified 3400 PSI at 2.5 GPM
- Cold water gas-powered unit
- 5 stainless steel quick-connect nozzles (0°, 15°, 25°, 40°, and soap)
- Suitable for cleaning wood, vinyl, driveways, and equipment
- Professional-grade durability and performance
- Easy assembly and quick-start functionality
Pros:
- Strong PSI and flow for versatile cleaning tasks
- Durable and rugged construction for long-term use
- Includes a full set of stainless steel nozzles
- Ideal for both industrial and home use
- Backed by DEWALT’s solid reputation for quality
Cons:
- GPM is slightly lower than some competitors in the same PSI range
- Can be bulky for users with limited storage space
- On the heavier side for residential use
5. SIMPSON Cleaning ALH3425 Aluminum Series 3600 PSI Gas Pressure Washer
Designed for contractors and serious DIYers, the Simpson ALH3425 delivers commercial-grade power with a 3600 PSI output and a trusted Honda GX200 engine. Built on a lightweight yet tough aluminum frame, it’s perfect for demanding outdoor cleaning tasks, from restoring decks to prepping surfaces for paint.
Key Features:
- 3600 PSI and 2.5 GPM output for powerful cleaning
- Commercial Honda GX200 engine for reliable performance
- Maintenance-free AAA industrial triplex plunger pump
- PowerBoost Technology for higher pressure at the nozzle
- Aircraft-grade aluminum frame with corrosion resistance
- 35-ft kink- and abrasion-resistant MorFlex hose
- 5 quick-connect nozzles (0°, 15°, 25°, 40°, and soap)
- 10-inch pneumatic tires for easy mobility
- 49-state compliant (not for use in California)
Pros:
- Excellent PSI for professional-grade cleaning
- Durable and lightweight aluminum construction
- Top-tier Honda engine with easy startup
- Long 35-ft hose allows extended reach
- Great for contractors and serious home users
Cons:
- Not CARB-compliant (not for sale in California)
- Slightly lower GPM than some higher-end pro models
- Threaded M22 hose connection may require adapters for some accessories
6. Northstar Gas Cold Water Portable Pressure Washer Power Washer
Built for demanding jobs, the NorthStar 4200 PSI Pressure Washer pairs a commercial-grade Honda GX390 engine with a heavy-duty CAT triplex pump. It’s engineered to deliver reliable performance and adjustability for everything from delicate surfaces to the toughest grime.
Key Features:
- Powerful 4200 PSI and 3.5 GPM output
- Reliable Honda GX390 OHV engine
- CAT 66DX triplex pump with thermal protection and ceramic plungers
- Adjustable pressure control for job-specific cleaning
- Easy Start system for hassle-free recoil starts
- Oil drain cutouts for quick, clean maintenance
Pros:
- High PSI and GPM for professional-grade performance
- Durable triplex pump designed for longevity
- Adjustable pressure makes it versatile for various surfaces
- Trusted Honda engine ensures dependable operation
- Built for ease of maintenance and longevity
Cons:
- Premium price point
- Heavier unit may require extra effort to move
- Not ideal for casual/light-duty home users
7. Greenworks 2000 PSI 1.2 GPM Pressure Washer (Open Frame GPW2003)
Compact, efficient, and perfect for residential use, the Greenworks 2000 PSI Pressure Washer delivers solid cleaning power for medium-duty tasks. With user-friendly features like a push-button start and an onboard soap tank, it’s a great choice for tackling patios, vehicles, and more.
Key Features:
- 2000 PSI and 1.2 GPM output
- 14-amp motor with push-button start
- Start/stop technology for energy savings
- Onboard soap tank for detergent use
- PWMA-certified for trusted performance
Pros:
- Lightweight and easy to maneuver
- Great for everyday cleaning tasks around the home
- Energy-efficient motor with automatic shutoff
- Easy to use and quick to set up
Cons:
- Lower GPM limits speed on larger jobs
- Not suited for heavy-duty or commercial use
- Plastic components may wear over time
Conclusion
When it comes to tackling tough outdoor cleaning tasks, gas pressure washers offer the power and performance needed to get the job done efficiently. Whether you’re a homeowner looking to deep-clean your driveway or a contractor needing a reliable tool for daily jobs, there’s a gas pressure washer to match your needs. From high-powered models like the Simpson PowerShot for professional use to versatile picks like the Westinghouse WPX3400 for residential projects, each unit brings unique strengths. Prioritize features like PSI, GPM, engine reliability, and portability to find the perfect washer for your workload and budget.