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Electric pressure washer help

Posted on 3/27/24 at 9:28 am
Posted by Willie Stroker
Member since Sep 2008
12864 posts
Posted on 3/27/24 at 9:28 am
I’ve had a Troy Bilt for years and it’s been a bitch to get started.

I’m thinking about making my life easier with maintenance/upkeep by switching to electric.

I’m trying to choose between a Greenworks 3,000 PSI (1.1 GPM)

And a Greenworks 3,000 PSI (2.0 GPM) that comes with a foam cannon.

The extra GPM costs about $100 more.

So my question is - will I even notice a difference if I go with 1 GPM less?

My primary use is cleaning driveway, underside of carport and other overhangs, and occasional mildew spots around the house (2 story).
Posted by BilbeauTBaggins
probably stuck in traffic
Member since May 2021
4304 posts
Posted on 3/27/24 at 9:40 am to
You're basically losing half of your cleaning power by dropping a full GPM. Also, the GPM ratings are not always 100% accurate. If you have a two story you absolutely need that extra GPM.

When you say "comes with a foam cannon" do you mean it comes with a foam feature that has soap mixer in the machine? Those are annoying to deal with as they build up gunk and crap in them all the time. My MIL let me borrow her Karcher electric pressure washer that has a soap/foam feature and it's awful. It has to drop to the lowest setting and lowest amount of pressure to use it. Not sure if that's particular to the pressure washer I have, but the better foam cannons are the ones that you attach to the end of your pressure washer, specifically the ones used for auto detailing.


This is what most foam cannons look like and can be swapped for different pressure washer quick connects. Again, this is something you'll only use if you're trying to detail a car with high suds soaps. If you're trying to spray any type of concrete/home cleaning chemicals on your home, I'm only familiar with using the products that you attach to a garden hose.

quote:

My primary use is cleaning driveway, underside of carport and other overhangs, and occasional mildew spots around the house

Driveways you'll want the stronger pressure washer. It will take you a VERY long time otherwise.
Posted by Willie Stroker
Member since Sep 2008
12864 posts
Posted on 3/27/24 at 10:32 am to
That helps. Thanks.

Posted by East Coast Band
Member since Nov 2010
62739 posts
Posted on 3/27/24 at 11:23 am to
I had a electric pressure washer and it worked. But took 5X longer to clean the same area as a quality gas powered pressure washer
Posted by Antib551
Houma, LA
Member since Dec 2018
914 posts
Posted on 3/27/24 at 1:15 pm to
Pressure washers are best compared using the "cleaning units" of each tool. The CU is simply the product of the PSI x GPM.

So unit1 has 3300 CU.
Unit 2 has 6000 CU.

Night and day difference. PSI is for loosening grime. That can be accomplish with a cleaning solution. GPM is for washing away all that grime. And Unit 2 will do that nearly twice as fast. The higher the GPM, the faster the job will be done.
Posted by BilbeauTBaggins
probably stuck in traffic
Member since May 2021
4304 posts
Posted on 3/27/24 at 2:01 pm to
Correct.

OP only listed two pressure washers, both with the same PSI but different GPM. No price difference either. Probably would've helped in the decision making process unless both were listed as the same price.
Posted by WB Davis
Member since May 2018
2051 posts
Posted on 3/27/24 at 4:43 pm to
quote:

Greenworks 3,000 PSI (2.0 GPM) that comes with a foam cannon.
If you check that Greenworks product page you'll see that it's really a 1.1 GPM machine that uses a low-pressure mixing tube to claim 2 GPM at 100 PSI - which is useless except for sweeping leaves off your porch.

You'll never get more than around 1 GPM of sustained flow at 2000 PSI from Chinese wobble pumps that are around 70% efficient. Greater flows with higher pressures will exceed 13 amps and pop your circuit breaker.

For years the most notorious liars were Sun Joe who claim 1.76 GPM at 2030 PSI. Now their fine print says their PSI ratings are for an instant when the starting capacitor torques up the motor, and the GPM ratings are with no nozzle attached and the machine is basically a drinking fountain.

Now you've got a slew of Amazon sellers claiming up to 4 GPM at 4,000 PSI - which would take something like 90 amps with a Chinese wobble pump.

The cheapest Ryobi machine gives you about as much flow and pressure as anything else.

Posted by Willie Stroker
Member since Sep 2008
12864 posts
Posted on 3/27/24 at 4:49 pm to
quote:

No price difference either.

Read it again. $100 difference.
Posted by gumbo2176
Member since May 2018
15037 posts
Posted on 3/27/24 at 5:12 pm to
Call me "Old School" but I have reservations about water and electricity in such close proximity.
Posted by WB Davis
Member since May 2018
2051 posts
Posted on 3/27/24 at 6:28 pm to
quote:

I have reservations about water and electricity in such close proximity.

They've all got integrated GFCI so your odds of an electric shock are practically nil.

The dirty secret with any Chinese wobble pump is that you'll get about 100 hours service life before the pump seizes and you throw the unit away.

Most homeowners never notice because they use the machines only a few hours per year.

This means that paying more for a Chinese-made electric machine with a longer-lasting induction motor or fancier case is probably a waste of money.

To get an American-built pressure washer with a serviceable triplex pump you're talking upwards of $1,200.

This post was edited on 3/27/24 at 6:32 pm
Posted by Clames
Member since Oct 2010
16541 posts
Posted on 3/28/24 at 9:17 am to
quote:

I’m thinking about making my life easier with maintenance/upkeep by switching to electric.


A quality gas unit is not hard to maintain. If I had to go electric, I'd only look at commercial-grade units and be prepared to spend some money. Mi-T-M has portable electric units with 1500psi/2GPM and professional pumps that will last years with only minimal maintenance.
Posted by WB Davis
Member since May 2018
2051 posts
Posted on 3/28/24 at 11:42 am to
quote:

Mi-T-M has portable electric units with 1500psi/2GPM and professional pumps that will last years with only minimal maintenance.

Mi-T-M makes some beautiful machines.

Their 110-volt portable machine rated 1000 PSI at 2.0 GPM weighs around 40 Lbs but will last forever.

Beware that their 110-volt machines rated more than this model have funky NEMA 5-20P plugs for 20-amp circuits that don't fit most electrical outlets.

This post was edited on 3/28/24 at 11:47 am
Posted by armsdealer
Member since Feb 2016
11494 posts
Posted on 3/28/24 at 11:49 am to
I used a Karcher 1700 for a few years, I thought it was good. It was stolen I considered replacing it with the same but I got sucked in to getting an active pressure washer. It cost more but holy crap does it move so much more water. I have only used it to wash the wife's car so I am not sure how well it does with other tasks.

That greenworks 2.0gpm model sure does look like the active 2.0 strapped to a frame, and if that is the case it is worth it over the cheaper models.
Posted by WB Davis
Member since May 2018
2051 posts
Posted on 3/28/24 at 2:43 pm to
quote:

I got sucked in to getting an active pressure washer.

I saw a review that said the new Active 2.0 pressure washer produces around 1.8 GPM at 1400 PSI.

The build quality looks solid, but its unloader is unreliable and even when working it makes the machine noisy when no water flows.

There are YouTube videos showing how to purge the unloader when it fails, which seems to happen a lot.

The Total Stop System in brands like Ryobi definitely runs quieter and is supposedly more reliable.

The Active 2.0 also has a narrow footprint and high center of gravity so it's always tipping over.

Its pump is made in Thailand instead of China. Not sure that's an improvement.

Definitely check a lot of reviews before paying $350 for this newer Active model.



This post was edited on 3/28/24 at 2:46 pm
Posted by WB Davis
Member since May 2018
2051 posts
Posted on 3/28/24 at 2:55 pm to
quote:

That greenworks 2.0gpm model sure does look like the active 2.0 strapped to a frame, and if that is the case it is worth it over the cheaper models.
Definitely not true.

The Greenworks and Active 2.0 both have exposed pump fluid ends (so they look sort of similar) but the pumps are very different.

The Greenworks uses a low-pressure mixing tube in its "high flow" mode to give you 2.0 GPM at only 100 PSI.

That 100 PSI is useless for anything except sweeping leaves.

ETA:

The big question with the Active 2.0 is whether the manufacturer's claimed 250-hour pump service life is true.

If that's true, the Active 2.0 should last twice as long as anything costing less than $1,200.
This post was edited on 3/28/24 at 3:01 pm
Posted by Clames
Member since Oct 2010
16541 posts
Posted on 3/28/24 at 11:00 pm to
quote:

Mi-T-M makes some beautiful machines.



I have an industrial gas direct-drive model. Subaru 9hp, AR pump, 3000 psi/3gpm. There are cheaper box store models that might offer more cleaning performance but won't touch this thing on durability and ease of starting.
Posted by LanierSpots
Sarasota, Florida
Member since Sep 2010
61596 posts
Posted on 3/31/24 at 3:43 pm to
I have that greenworks 3000 electric unit. I bought it last year to just clean around the pool and possibly use it on the boat every once in a while. I do not have any gas powered tools anymore so I just didnt want to to do a gas pressure washer to be the only one

I have used it about 10 times in a year and it has pretty much worked fine. No problems at all. The pressure is fine for what I need it to do but I would like a little more water flow. It is simple to use and does fine cleaning my pool cage, pavers, driveway and even on the boat.

The stand is a little cheesy as it does not hold the wand or coiled up hose very well. I need to do some engineering on that because it sucks when its all over the garage

Posted by Phil
Member since Jun 2010
368 posts
Posted on 3/31/24 at 3:52 pm to
I have the Sun Joe and unless you are using it to wash a car, don’t waste your money. It’s great and easy for car washing but doesn’t compare to gas. I still use my gas for siding/driveway cleaning.
Posted by WB Davis
Member since May 2018
2051 posts
Posted on 3/31/24 at 5:26 pm to
quote:

Sun Joe

Sun Joe was founded by this 17-year-old New Jersey kid who got rich by importing private-label Chinese machines and lying about their ratings.




People eventually figured out that the SPX3000, with its amazing 1.76 GPM at 2030 PSI advertised performance, really delivers closer to 1 GPM at 1,400 PSI.

Now if you look at the Amazon fine print they've added a disclaimer that its advertised GPM, which is what mostly determines nozzle force, is with no nozzle attached - effectively 0 PSI.





Posted by billjamin
Houston
Member since Jun 2019
12395 posts
Posted on 3/31/24 at 5:28 pm to
quote:

effectively 0 PSI.

Yep. It’s fricking worthless other than cleaning a car.
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