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Old 12-22-2015, 08:39 PM   #1
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Power Washer

I have been searching for a pressure washer that dispense soap under pressure to wash our motor home. I've looked at Northern Tools, Sears and the big box stores with no luck.
Has anyone have one or know of one.

2001 Airstream XC360
Helotes, TX
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Old 12-22-2015, 09:30 PM   #2
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I bought mine at Sam's Club. Be careful though, you can send decals flying if you aren't very careful.

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Old 12-22-2015, 10:16 PM   #3
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This power washer attachment is a lot of fun for washing your RV!

2014 Newmar Canyon Star 3920
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Old 12-22-2015, 10:23 PM   #4
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Originally Posted by lms1943 View Post
I have been searching for a pressure washer that dispense soap under pressure to wash our motor home. I've looked at Northern Tools, Sears and the big box stores with no luck.
Has anyone have one or know of one.
Well Sir,
You don't indicate whether or not you'll be keeping this unit with you in the coach or, keeping it at a permanent residence. If this is to be a mobile unit, as in real small so it fits in compartments, you'll most likely want one that hovers around oh, say about 1000 psi. or less. And, most of those, will have a water gpm of about 1.5 to 2.5 or there-about.

We carry a small Karcher one that I think is around 1300 or maybe a bit less and, about 1.5 GPM. To me, it's not a big deal about spraying the soap solution or not. If I can't clean the coach in a campground which, about 99.9999% of them won't let you, then this is what I do:

1. I find a K-Mart or, Walmart of any empty, large parking lot or, even a larger rest stop if one's available and, park in the corner, out of the way of folks.
2. Break out a 2 gallon bucket and fill it with a soap solution.
3. Break out the tiny pressure washer and, hook it up to 120VAC and, my own water supply.
4. I also break out my little 6' fold-up step ladder.
5. I start by wetting down 1/2 of one side of the coach.
6. With my trusty soft brush, soap down that wetted part.
7. Rinse that side and, wet the other section on that side of the coach.
8. Then, do the same for one end of the coach.
9. Then, do the same for the other side and, finally the other end.

All this takes the wife and I about 20 minutes start to finish, wash and rinse. Then, we break out a couple of those Costco yellow microfiber towels and dry it all down. That takes another 1/2 hour to 45 minutes. I then put it all away.

I've probably used around 8 gallons of water total. But, there's basically no water run-off what so ever so, there's no puddling. The really cool way would be to have some sort of soft water system or, deionized water system so that NO DRYING IS NEEDED. But, that's not happening.

As to where we bought that little Karcher, not a clue. It's been with us for over a dozen years. Maybe try ebay, craigslist, Amazon etc.
2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '08 GL 1800 Gold Wing
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Old 12-23-2015, 05:18 AM   #5
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I got a Karcher 1600 psi electric pressure and added the 4 piece extension kit. It adds about 5 1/2 feet to the system. I also got the rotating brush attachment. These are/were available from Amazon.
I spray a portion of the RV with an auto soap/wax and then hook up the rotating brush. With the extension you don't need a ladder. Sometimes you have to rotate the handle to an awkward position to keep the brush flush with the RV surface you are trying to clean. Then I disconnect the brush and hook up the pressure head. I don't get too close to the surface as I am afraid of blowing off a decal or some ofthe finish.
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Old 12-23-2015, 06:41 AM   #6
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Almost all the pressure washers available from Northern Tool are capable of dispensing soap. Most don't have a container for the soap, but rather clear tube that can be inserted in a gallon jug. The hose is connected to a regulating valve so you can dial in whatever concentration you want.

Here's a link to a page of electric pressure washers from Northern Tool.

Electric + Cold Water Pressure Washers | Pressure Washers | Northern Tool + Equipment

Note the clear plastic tube visible on the ones on the top line. That's the tube for siphoning soap into the washer. All the other electric washers I looked at had a similar tube. Some you have to read the text to see it's included.
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Old 12-23-2015, 08:17 AM   #7
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For what it's worth, I use this one:
It has the small tube to pull soap solution in with but I tried it once and just use a bucket and brush on an extension. The handle is easily detached so it can be put in storage. I remove the hose and added connectors to the electric cord so it can be detached as well. Makes it easier to stow that way.

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