Gas Pressure Washers

Gas pressure washers built for job sites, yards, and anywhere power isn’t close by. Choose from hot and cold water models
in portable direct drive and skid-mounted belt drive setups, all assembled and tested by our team in Frederick, MD.

Gasoline

Power Source

Diesel
Electric
Gasoline

Water Temperature

Cold Water
Hot Water

Drive Type

Belt Drive
Direct Drive

Flow Rate (CFM)

101
108

Max GPM

12(0)
220(0)
440(0)
8(0)

Max PSI

4000(0)
4500(0)
54(0)
58(0)

Showing all 12 results

Pressure Washers

DHG Series Portable Gasoline Direct/Belt Drive

GPM

3.7

PSI

4000
Pressure Washers

DHS Series Portable Gasoline Direct Drive

GPM

2.6, 2.9, 3.3

PSI

2500, 3000, 3500, 4000
Pressure Washers

HDB Series Skid Gasoline Belt Drive

GPM

3.9

PSI

3000
Pressure Washers

HDC Series Skid Gasoline Belt Drive

GPM

4.0, 4.7, 4.8

PSI

3000, 3500, 4000
Pressure Washers

HDS Series Skid Gasoline Belt Drive

GPM

4.7, 4.8, 5.0, 5.6, 7.8

PSI

3000, 3500, 4000
Pressure Washers

HVS Series Skid Gasoline Belt Drive

GPM

4.7, 4.8, 5.6, 7.8

PSI

3000, 3500
Pressure Washers

Aluminum Series Portable Gasoline Direct Drive

GPM

2.4, 3.0, 3.4, 3.5, 4.0

PSI

2700, 3000, 3500, 4000
Pressure Washers

Work Pro® Series Gasoline Direct Drive

GPM

2.4, 2.8, 3.4

PSI

3200, 3600, 4200
Pressure Washers

Aluminum Series Portable Gasoline Belt Drive

GPM

3.4, 3.5, 3.7, 4.0

PSI

3500, 4000
Pressure Washers

CTM Series Truck-Mount Gasoline Belt Drive

GPM

5.0, 8.0

PSI

3000, 3500
Pressure Washers

Premium Series Portable Gasoline Belt Drive

GPM

3.5, 3.8, 4.0, 4.4

PSI

2500, 3000, 3500, 4000
Pressure Washers

Premium Series Portable with Roll Cage Gasoline Belt Drive

GPM

3.7, 3.8, 4.0, 5.0, 8.0

PSI

3000, 5000, 6000, 7000

Showing all 12 results

Gas Pressure Washers for Outdoors & Mobile Cleaning

A gas pressure washer gives you full cleaning power without needing an outlet, a long extension cord, or a dedicated wash bay. That makes gas the go-to choice for crews that clean where the work is: construction sites, equipment yards, farms, fleet lots, and building exteriors.

Gas engines also handle higher flow rates than most portable electric units, so you can clean large surfaces and heavy equipment faster. For outdoor work that moves from site to site, gas is usually the most practical option.

How to Choose the Right Gas Pressure Washer

PSI breaks dirt loose; GPM rinses it away. For heavy equipment and large concrete areas, higher GPM usually saves more time than higher PSI alone.

Hot water or cold water. Cold water handles dirt, mud, and general cleaning. If you’re cleaning grease, oil, or hydraulic fluid off equipment, a hot water unit will clean faster with less chemical.

Direct drive or belt drive. Direct drive units are lighter and more affordable, which suits intermittent use. Belt drive units run the pump at lower RPM, so they hold up better when the machine runs for hours a day.

Portable or skid-mounted. Portable units roll easily between jobs. Skid-mounted units are built to mount on a truck or trailer, giving mobile crews a complete wash setup they can take anywhere.

Common Applications

Construction and excavation equipment
Fleet and truck washing in the field
Agricultural equipment and livestock facilities
Concrete, parking areas, and building exteriors
Rental yards and equipment dealers

Gas Pressure Washer FAQs

Can I use a gas pressure washer indoors?

No. Gas engines produce carbon monoxide, so they should only run outdoors or in well-ventilated open areas. For indoor wash bays or enclosed spaces, an electric or stationary unit is the safer choice.

How does a gas hot water pressure washer heat the water?

The gas engine drives the pump, and a separate burner heats the water. On most portable hot water units, the burner runs on diesel or kerosene, so you’ll keep two fuels on hand.

What maintenance does a gas pressure washer need?

Plan on regular engine oil changes, pump oil checks, air filter cleaning, and inspecting hoses and nozzles. Before cold weather, winterize the pump to prevent freeze damage.

Should I mount my pressure washer on a trailer?

If you clean at multiple locations, a trailer or truck-mounted skid unit with a water tank and hose reel saves setup time at every stop. We can build a complete trailer package around the washer you choose.

Service, Rentals, and Custom Builds

Our trained technicians service gas pressure washers in our Frederick shop and on-site throughout Maryland, Northern Virginia, Southern Pennsylvania, Washington DC, and West Virginia.

Need a machine for a one-time job? Learn about rentals.

Need something built for your operation? We’ll design a custom setup around your equipment and workload.