When people search for “2 pressure washers,” they are usually asking about the two main types, because the whole buying decision starts there. There are two broad ways to power a pressure washer — electricity and a gas engine — and almost every machine you see is one or the other. Choosing between the 2 pressure washer types is the first and most important decision you will make.
This guide compares the two main types, then looks at the second distinction that shapes them — hot water versus cold — so you can pick the right machine for your work.
The Two Main Types
The two main types of pressure washer are electric and gas. An electric pressure washer uses an electric motor to drive the pump. A gas pressure washer uses a small internal-combustion engine. That single difference influences power, portability, noise, maintenance, and cost, and it is why the two types suit different users.
Electric machines are quiet, fume-free, and simple. They start at the press of a switch, need no fuel, and are well suited to homes, garages, and indoor use. Their limitation is power: most electric washers deliver lower pressure and flow than gas machines, and they depend on a power supply, so their reach is limited by the cord.
Gas machines are powerful and portable. They deliver higher pressure and flow, run anywhere without a cord, and suit heavy cleaning, large areas, and jobs away from electricity. Their costs are noise, exhaust, fuel, engine maintenance, and a harder start. Neither type is “better” in the abstract; each wins in the right setting.
Electric Pressure Washers
An electric pressure washer is the natural choice for light and medium cleaning around the home. It handles cars, bikes, patios, furniture, fences, and small driveways well, and it is the only sensible option indoors or in enclosed spaces where exhaust and noise would be a problem. For many households, an electric machine is all the power they need.
Its strengths are convenience and low fuss. Plug it in, switch it on, and clean. There is no fuel to mix or store, no engine to service, and it is quiet enough for residential areas. It is also typically cheaper to buy and run. Electric washers do have a duty cycle, so they need rest breaks, and the cord limits how far from an outlet you can work.
Within electric machines, there are light-duty 120-volt units and more capable higher-voltage models, so the electric category itself spans a wide range. Choosing an electric washer means matching its pressure and flow to the task and respecting its duty cycle.
Gas Pressure Washers
A gas pressure washer is the choice for heavy cleaning and true portability. Because a gas engine delivers more power than a typical electric motor, gas machines reach higher pressure and flow, which cuts through stubborn dirt, strips coatings, and cleans large flat areas quickly. They suit driveways, decks, siding, larger vehicles, and professional work.
Their portability is a real advantage. With no cord, a gas washer goes wherever it is needed, provided you can carry water or connect a supply. They also run indefinitely within fuel limits, without the duty cycle that constrains electric machines. For big jobs and remote sites, this freedom matters.
The trade-offs are real too. Gas washers are louder and produce exhaust, so they belong outdoors. They need fuel and engine maintenance — oil, air filter, spark plug, and fuel care — and they are harder to start and heavier. For a user willing to trade convenience for power, that is a fair trade; for a light user, it is unnecessary.
The table below summarises the two main types.
| Feature | Electric | Gas |
|---|---|---|
| Power | Light to medium | Medium to heavy |
| Noise and exhaust | Quiet, fume-free | Loud, exhaust fumes |
| Portability | Limited by cord | Runs anywhere |
| Maintenance | Low | Engine and fuel care |
| Best for | Home, light/medium jobs, indoor | Heavy jobs, large areas, remote sites |
The table makes clear why the two types exist: they serve different needs rather than competing head to head.
Power, Pressure, and Flow by Type
The difference between the types shows up most in the two numbers that define cleaning power: pressure in PSI and flow in GPM. Cleaning power is essentially the product of the two, so both matter. Most electric washers deliver modest pressure and flow, suited to lighter tasks, while gas machines reach higher figures on both counts.
Gas machines also tend to produce their power more consistently over long runs, while electric machines may need rest breaks. This is why a big, dirty driveway that would strain an electric washer is routine for a gas machine. Flow, in particular, is where gas machines pull ahead, and flow is what makes large surfaces quick to rinse.
That said, the gap is not always as wide as it looks. Higher-voltage electric machines close in on the lower range of gas performance while staying quiet and clean. The right type depends on the size of the job and whether you need that extra power enough to accept the trade-offs.
The Second Distinction: Hot vs Cold
Across both electric and gas machines runs a second distinction: hot water or cold water. A cold-water pressure washer uses the water as supplied, while a hot-water machine heats it with a burner, usually diesel-fired, before it reaches the gun. Heat helps break down grease and oil, so hot-water machines clean greasy surfaces far better.
Hot-water machines are larger, more complex, and more expensive, and they are typically gas-powered for the power needed to run both the pump and the burner. They belong in professional and industrial cleaning, where grease and heavy soil justify the extra cost and maintenance. For home and general cleaning, a cold-water machine is almost always sufficient.
So the two main types — electric and gas — combine with the water temperature to define the machine you need. Most home users want an electric or gas cold-water washer. Professional and heavy-cleaning users may need a gas hot-water machine. Knowing which combinations suit your work narrows the field quickly.
How to Choose Between Them
Choose by the job first. If you clean cars, patios, furniture, and small areas at home, an electric cold-water washer is the right fit. If you clean large driveways, decks, siding, or work on sites away from power, a gas machine is worth the extra noise and maintenance. If grease is your main enemy, consider hot water.
Then weigh the practicalities. Do you have a convenient power supply, or do you need to work anywhere? Do you mind engine maintenance, or do you prefer plug-and-play simplicity? How much space and noise can you live with? Honest answers to these questions point to one type clearly.
Finally, remember the whole system. Whichever type you choose, its pressure and flow must suit the work, its hose, gun, and nozzles must be matched, and the water supply must keep up. The type is the first decision, but the rest of the setup completes it.
Cost Over Time
Cost is another way the two types differ, and the up-front price tells only part of the story. Electric washers are usually cheaper to buy and cheaper to run, with little maintenance beyond basic care. Their electricity and simple upkeep keep the running cost low, which suits occasional and light use.
Gas machines cost more to buy and more to run, because they need fuel and engine maintenance. Oil changes, air filters, spark plugs, and fuel add up, and their complexity means more that can need attention. In return, they deliver more power and portability, which professional and heavy users need.
Think about total cost against the work you do. For light, occasional cleaning, an electric washer’s low cost is exactly right. For heavy, frequent cleaning, a gas machine’s higher cost buys capability that electric machines cannot match, making it the better value despite the price. Matching cost to workload keeps the choice sensible.
Maintenance by Type
The two types differ in upkeep. An electric washer needs little beyond keeping the motor dry and cool, cleaning the inlet filter, checking the pump oil where applicable, and protecting the machine from freezing. Its duty cycle limits how long it can run, so respecting rest breaks is part of owning one.
A gas washer needs the electric care plus engine attention: oil, air filter, spark plug, and fuel management. Fuel freshness matters, since old gasoline causes most starting problems. The engine also brings more moving parts and more noise, and it must be run outdoors.
Both types share the same core needs: a clean water supply, a protected pump, matched accessories, and frost protection. Understand the maintenance your chosen type demands, and it will serve you well. Whichever of the 2 pressure washer types you pick, matching it to your work is what makes it the right machine.
Frequently Asked Questions
What are the 2 main types of pressure washers? Electric and gas. An electric washer uses a motor, a gas washer uses an engine. That choice drives power, portability, noise, and maintenance.
Which of the 2 is better? Neither is better in general. Electric suits home, light and medium cleaning, indoors and near power. Gas suits heavy cleaning, large areas, and sites away from electricity.
Are electric pressure washers powerful enough? For home and light-to-medium jobs, yes. Cars, patios, furniture, and small areas are well within reach. Heavy, large-area cleaning may call for gas.
Are gas pressure washers hard to maintain? They need engine care — oil, air filter, spark plug — and fuel management, plus they are louder and must run outdoors. That is the trade-off for their power and portability.
Is there a second type beyond these two? Yes, in a sense: hot-water versus cold-water. Hot-water machines heat the water to clean grease better and are usually gas-powered and professional-grade.
Which is cheaper? Electric washers are usually cheaper to buy and run and need less maintenance. Gas machines cost more up front and in upkeep but offer more power and portability.
Which should I choose for a car? An electric cold-water washer is ideal, and safer for paint when used with the right nozzle and distance. Higher pressure risks damaging paint.
Do both types need the same accessories? The hose, gun, wand, and nozzles must be rated for the machine’s pressure, flow, and temperature, so match accessories to whichever type you choose.
Final Thoughts
The “2 pressure washers” most people mean are the two main types: electric and gas. Electric machines are quiet, clean, and convenient, ideal for home and light-to-medium cleaning. Gas machines are powerful and portable, made for heavy cleaning and remote sites. Across both runs the second choice of hot versus cold water.
Decide by your job, your power availability, and your tolerance for maintenance. Then match pressure, flow, and accessories to the work, and keep the water supply and pump in good order. Pick the type that fits how you clean, and you will have the right machine rather than just a powerful one. For related reading, see our guides on an electric cold water pressure washer and a gas engine pressure washer.