Pressure Washers PSI Needs

PSI is not really the thing that makes the difference. PSI is measured at the nozzle head and is different depending on what spray tip is used. A 2900 PSI pressure washer won't be running at 2900 PSI unless you attach a 0 degree spray tip. So that spec is lower than it may appear at first look.

The more important factor is the gallons per minute of the pump. Most electric machines will only flow around 1.5 GPM. There are very expensive electric machines which can exceed 2 GPM but they usually require a 220 power connection.

If you are cleaning concrete driveways, a consumer level electric pressure washer won't be able to generate enough flow to do the job. If you are washing your car or spraying Jomax off of a wall, sure, an electric may be enough.

In lower end gas pressure washers you can get a 6 hp, 212 cc Honda-clone engine and a 2.6+ GPM pump at Northern Tools for $299. A similar machine at Harbor Freight with a 2.8GPM pump is around $350.00 ($399.00 right now but they go on sale frequently to $350.00). Those will do the job quickly and efficiently and not break the bank.

Another temptation may be to get an actual Honda motor in the 160-170 cc range. My recommendation would be to resist that temptation because the motor will be underpowered. If getting a Honda powered machine, don't go below the 200 cc Honda motor. However, now you are talking real money, likely more than you need to spend.

Just a little tip to perhaps save you some trouble.

After you use the pressure washer there will be some water remaining in the pump. If the washer sits up for a while, especially over winter, that water can degrade or destroy the pump. My neighbor's pressure washer pump ruptured a few weeks ago when it got below freezing.

Disconnect the spray hose and pull the starter string a few times with the engine turned off so it won't start. The pump will push most of the water out. They also sell antifreeze/lubricant which you can spray into the pump to displace the water and protect the pump while it waits for the next job.

Always use fuel stabilizer and cut the motor off at the end of every job by turning off the fuel line and letting it run out of gas to the engine. Keep the oil fresh.

I bought the electric GreenWorks 2000psi from Lowes. I was going to buy a gas one but I don't use one alot and thought i would be fighting keeping carbs clean since not running alot. Glad i did. My Green Works will peel paint if i let it! If all you are doing is cleaning your house, fence, driveway.... look at the Greenworks 2000psi. Perfect for those jobs and has tons of power for electric.

Damn, just cuck us all why don't you.

Appreciate the info guys, ill keep doing more research but may just go electric and see how things turn out. 2 GPM should probably do what I need.

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Yes it will. I have a $120 Ryobi that does a great job

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I just did my concrete walkway with my electric. No detergent, just water pressure. Looks like it was just poured 2 weeks ago.

Electric is not really enough power for cleaning a driveway.

For a driveway you need a gas PW plus one of these:

https://www.homedepot.com/p/RYOBI-15-in-3300-PSI-Surface-Cleaner-for-Gas-Pressure-Washer-RY31SC01/306343055?

Side note, these can be modified to fit many common PW surface cleaners:
https://www.amazon.com/gp/product/B079Z21YS7/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1

Took about 15 mins to adapt to mine.