Simpson vs DeWalt Pressure Washer: Durability or Convenience?
Quick answer: Sources suggest DeWalt for lighter, easier homeowner use and Simpson for frequent, heavy use with a rebuildable triplex pump. The price gap is smaller than you might expect. We have not tested them ourselves.
Last updated: October 2026. Simpson and DeWalt both sell gas pressure washers, but they aim at slightly different buyers. This comparison uses GasWasherHQ, EngiMarket, RJP Hotsy and Pressure King. RJP Hotsy and Pressure King are vendors, so we treat them as opinions. We have not tested any of these machines ourselves.
How do the machines compare?
| Feature | Simpson PS60869 | DeWalt DXPW3400 | Simpson ALWB60828 |
|---|---|---|---|
| PSI / GPM | 4,000 / 3.5 | 3,400 / 2.5 | 4,200 / 4.0 |
| Engine | Honda GX270 | 208cc | Honda GX390 |
| Pump | AAA triplex | Axial cam | CAT triplex |
| Weight | 120 lb | 76 lb | 161 lb |
| Price | About $999 | About $729 | n/a |
| Cleaning units | 14,000 | 8,500 (EngiMarket) | 16,800 |
What are the warranties?
GasWasherHQ lists 3 years on the engine, 5 years on the pump and 10 years on the frame for the Simpson PS60869. EngiMarket gives a 1-year frame warranty for the Simpson it reviews, and RJP Hotsy lists the same warranty terms for both brands. Because the sources disagree, verify terms on the manufacturer’s site.
What do the verdicts say?
- EngiMarket: DeWalt for homeowners because it is lighter, Simpson for contractors.
- RJP Hotsy: DeWalt wins on ergonomics, Simpson has more power and long-term durability. It lists a Simpson at MSRP $1,500 and a DeWalt at about $1,300, both 4,400 PSI and 4.0 GPM.
- Pressure King: gives no specs and says the choice depends on your needs.
Why does the pump matter?
A triplex pump can be rebuilt and lasts far longer than an axial pump. Sources quote 200 to 800 hours for axial and thousands for triplex. If you use the machine often, a triplex pays for itself. Read our axial vs triplex guide.
Choose DeWalt if…
You are a homeowner who wants lighter weight and easy starting. See our DeWalt review.
Choose Simpson if…
You use the machine often or want a rebuildable triplex pump. See our Simpson review.
What does weight mean in practice?
A 76 lb machine is easier to lift into a truck bed than a 161 lb one. If you move the washer alone, consider a lighter unit or a ramp. Wheels and handle design matter as much as raw weight.
A simple decision checklist
- Estimate how many hours you will use it each year.
- Decide whether a rebuildable pump is worth the price.
- Check weight and how you will transport it.
- Compare warranties by component.
- Consider budget models in our gas guide.
How do you decide between them by use?
| Use | Suggested pick | Reason |
|---|---|---|
| A few times a year | DeWalt | Lighter and cheaper |
| Weekly or seasonal contracting | Simpson | Triplex pump and durability |
| Moving alone | DeWalt | 76 lb |
| Long-term ownership | Simpson | Rebuildable pump |
What about cleaning units?
Cleaning units are PSI multiplied by GPM. EngiMarket lists 16,800 for a Simpson at 4,200 PSI and 4.0 GPM against 8,500 for the DeWalt DXPW3400. That means the Simpson can move roughly twice as much cleaning power per minute, which shows up as faster work on large surfaces. It also explains the weight difference between them.
Are there cheaper ways in?
Yes. A Westinghouse gas model such as the WPX3200 undercuts both brands, though with an axial pump. Compare it in DeWalt vs Westinghouse. For light work, an electric model from our electric guide may be all you need.
What should you check before you pay?
Verify the exact model code, the engine brand, the pump type, the warranty by component and where service is available. Ask whether the price includes the hose, gun and nozzles. Check the noise level, since gas engines run at roughly 85 to 100 dB and hearing protection is a must. Finally, look at return policies, because heavy machines are expensive to ship back.
Our guide to starting a pressure washer covers common start-up problems.
Which brand is better for beginners?
Beginners often prefer the lighter DeWalt because it is easier to move and start. Simpson rewards owners who plan to service the machine and use it heavily. Neither brand replaces good technique: keep a wide nozzle on delicate surfaces and read our safety guide before your first job.
Frequently asked questions
Is Simpson better than DeWalt?
Sources describe Simpson as more durable and powerful, and DeWalt as more ergonomic.
Which is lighter?
EngiMarket’s DeWalt is lighter, at 76 lb versus 120 to 161 lb for the Simpsons.
Which has a triplex pump?
The Simpsons listed here use AAA or CAT triplex pumps. The DeWalt DXPW3400 uses an axial cam pump.
Which costs more?
GasWasherHQ lists about $999 for the Simpson PS60869 and $729 for the DeWalt.
Final verdict
Choose Simpson for heavy or frequent use and DeWalt for occasional homeowner work. Verify warranty terms before buying.
Sources: GasWasherHQ, Simpson vs DeWalt; EngiMarket; RJP Hotsy; Pressure King. Related: Simpson review, DeWalt review, Axial vs triplex.
