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The Generac one-wash 3100 psi (gas - cold water) pressure washer is available for purchase today.

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Generac One-Wash 3100 PSI (Gas - Cold Water) Pressure Washer

(Based on expert analysis, manufacturer ratings and customer reviews)

4.5 out of 54.5 out of 54.5 out of 54.5 out of 54.5 out of 5
243 Reviews
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  • Features
  • Specs
  • 7
    Q&A 
  • 243
    Reviews
  • Articles
  • Shipping
  • Accessories
Grade
Style
Water Pressure
3100
PSI
Water Flow
2.8
GPM
Cleaning Speed
8680
Cleaning Units
Engine
Generac


Product Video Disclaimer: "PED is not responsible for any variances from the product in this video and the item you purchase. Please review all product specs prior to purchase."

Just Select The Task And OneWash Adjusts Automatically
PowerDial lets you choose from 2000psi to 3100psi
Choose the job and OneWash delivers the right pressure & flow
Select car wash, house wash, fence wash, or pavement wash

Consolidated Control Panel
Makes starting & adjusting the unit quick and easy

Powerful 5.5 HP Generac 212cc OHV Engine
Starter is easy to access on the side of the washer

Easy Access AR Axial Cam Pump
Positioned well above the ground for convenient hose connection

On-Board 3/4 Gallon Detergent Tank With Drain Plug
Easy access for filling with pressure washer safe soap
Tank can be quickly cleaned & emptied with water hose

Easy To Move & Store
Large 11" NeverFlat wheels & balanced design for tough terrain
Folding handle for compact transport & storage
Secure on-board storage for 20" lance, 3 spray tips, & M22 hose
Not for sale to California; doesn't meet strict CARB standards


Need Help? Ask Our Snow Blower Experts.
Engine
Engine Brand
Generac
Starter
Recoil
HP
5.5 HP
CC
212 CC
Fuel Tank Size
3.2 quarts
Pump
Pump Brand
AR
Pump Type
Axial Cam
Adjustable Pressure
Yes
Chemical Injection
Single Detergent Tank
Detergent Tank Capacity
3 qts.
Housing
Frame Type
2-Wheel Cart
Wheels
NeverFlat
Hose
Hose Storage
Hook
Hose Length
30 Feet
Hose Material
PVC/Plastic
Hose Diameter
1/4 Inch
Hose Connections
M22
Spray Gun
Spray Gun Connection
M22
Spray Gun Grade
Residential
Spray Gun Wand
Single Wand
Spray Tips
Quick Connect Tips (3)
Turbo Nozzle
Sold Separately
Overview
Weight
68.5 Pounds
Product Length
20.6 Inches
Product Width
21 Inches
Product Height
39.5 Inches
Consumer Warranty
2 Years
UPC
696471066029
Model
6602

*Ask Brian about the Generac 6602. Sorry, no repair questions:


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  7 Questions
Q: Please recommend a good telescoping wand and gutter attachment for the 6602. I'm not finding definitive info on fitting compatability. 3/8 or 1/4. Need 18-20 ft wand. Thanks

by Andre Godefroy from Washington on June 26, 2016

A: The BE 18-Foot Fiberglass Telescoping Wand would be a good choice since it comes with an M22 adapter that will let it connect to the 6602 hose.

The telescoping wand has a 1/4" quick connect tip, and will work well with BE's Quick Connect Gutter Cleaner.

Please be aware that any telescoping wand will flex when water pressure is applied- they take good footing and a strong back to use comfortably. I'd also suggest using BE's Wand Support Belt to help control the telescoping wand.
by Brian, Product Expert
Q: I am looking into the 6602. I plan to use for general cleaning and am looking into getting the jetter hose attachment to clean my drainage tile(live in country dont want to pay $100 to clean anymore leaves) will this work fine for me.
by Harvey Hooten from Indiana on June 03, 2015

A: Yes this would be a good choice for you.

Also, I would recommend a Jetter conversion kit for your Jetting needs. I would recommend model 43.5002. I have attached a link for you to view that item.

Jetter Conversion Kit
by Brian, Product Expert
Q: mike,

does the generac one wash 3100 have idle down?? I had a kohler pressure washer before and when you apply the trigger the rpms would ramp up. Is this idle down??? Also is a triplex pump worth the price if you use your pressure washer once a week for couple of hours..

by Patrick from Indiana on May 17, 2015

A: The unit comes with a throttle control. I've included the owners manual. The unit is in the consumer category and a few hours or less is week is recommended. If your looking for more hours the 6590 would be your next step up.

http://www.pressurewashersdirect.com/manuals/generac20146602specsheet_secured.pdf
by Brian, Product Expert
Q: Does this unit idle down when not washing?
Is the reason it only has three nozzle tips is because it also has adjustable pressure?
First time buyer trying to decide.
Thanks

by Tim Blaney from Arizona on May 16, 2015

A: The unit comes with throttle control to help the first time user set washing adjustments so there is less nozzles. If you want to move up to it's sister the 6598 let's you set the pressure with all the nozzles.

http://www.pressurewashersdirect.com/manuals/generac20146602specsheet_secured.pdf
by Brian, Product Expert
Q: Hi Mike, thanks for reading my question.
I am in a dilemma.
I am interested in purchasing this Generac pressure washer 6602 One Wash (3100 PSI) This has pressure control.
I also like the Karcher G 2800 FH, 2600 XH Karcher, Generac 6595-0, Generac 6598
I chose these for their performance and similar cost.
I'll use it is to clean concrete floors, walls coated (no damage) to clean mold. Once a day for 1 hour and a half.

Lately I've read bad cometary of Karcher machines. My neighbor told me that the pressure whasher buy Karcher G 2600 VH and tube many problems with it.
I have read very good reviews of Generac brand.
Interested durability. I take great care of my equipment and I have lasted many years, and now want a wahser pressure also durable.

Which of you two pressure washer do you recommend?
Thanks for your time.

by Jaime Campo from Texas on October 27, 2014

A: None of these units would be able to handle daily usage. They are consumer items and would not handle what you are doing. I would recommend going with the Generac 6590. This unit has a triplex plunger pump on it, and can handle your usage. I have attached a link for you to view that item.

Generac 6590
by Brian, Product Expert
Q: Hello Mike,
I was in doubt between Generac 6602 and 6598 and ended up ordering 6602 (even you thought 6598 was a better choice) because one of my planned uses for the machine is car washing and I like the fact that you can regulate the pressure to avoid damaging the car. My other uses will be concrete cleaning (garage floor, walkway) and vinyl siding cleaning. Please tell me what additional attachments you would recommend for these tasks. Thanks

by Marc from New York on June 20, 2014

A: For concrete cleaning I like either a Turbo Nozzle or Surface Cleaner. These will aid in your cleaning as well as significantly decrease the times it takes to compete your task. For cleaning cars I love the Foamer Attachment. It will spray out detergent as thick as shaving cream!
by Brian, Product Expert
Q: hi, looking at buying one what is better one generac 3100 model 6602 or the one 3100 dual tank cleaner

steve same price

by Steve from North Dakota on June 05, 2014

A: The One Wash 6602 is a great choice for households where several people will be using the unit for many different tasks- the controls are simple, and the adjustable pressure is very handy.

The 6598 is great for work around the house- the pressure isn't adjustable, so you'd need to use a wide spray nozzle to keep from blowing the lawn furniture across the yard instead of just turning down the pressure.

The dual detergent tanks of the 6598 are handy if you do a lot of car wash & wax, or house wash & pavement cleaning- you won't have to run back and forth to switch buckets. Just make sure you rinse them after every use so they don't clog up.

The 'better one' is the one that best suits your situation!
by Brian, Product Expert
Generac 6602 Reviews & Ratings
Overall Rating
Features
5/5
Quality
4/5
Performance
4/5
Value
4/5
Overall
4.5 out of 54.5 out of 54.5 out of 54.5 out of 54.5 out of 5
Pros
Easy To Use (48)
Features (31)
I'd Buy It Again (29)
Price (27)
Easy To Store (24)
Cons
Bad Instructions (4)
Packaging (4)
Durability (4)
Low Quality (4)
Heavy (4)
85% of respondents would recommend this product to a friend
243 Reviews  Sort by 
 
Brian, the Pressure Washer Expert
Pressure Washer Expert

Product Expert
Total Reviews
122 Reviews
Total Helpful Votes
5356 Helpful Votes
Pressure Washers Direct Recommended

Just turn the dial to your job task and go. The Generac One-Wash is great for the first time user but even someone like myself I just click and go without adjusting pressure or worrying about applying the incorrect pressure.

The units includes an AR pump which is easy to maintain and a detergent tank so your not dragging a bottle around the house with you.

Generac One-Wash is the perfect gift to anyone considering pressure washing with a gas machine.

This unit performs very... more
Brian Recommends This Model
Was this review helpful?
564-21
Steven T.
Fenton, MO
Total Helpful Votes
18 Helpful Votes
Most Helpful Positive Review
REVIEWED
MAY.
26
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Hands Down Best I Have Ever Used For A Residential Power Washer
This thing is AWESOME! I use it with a spiral twisting tip and this thing take oil stains off the driveway, will actually splinter wood, I use mine at work to clean the streets after a certain area always floods and leaves 1-4" of hard mud and debris, starts on first pull every time, these other bad reviews I don't see it, I'm guessing OPERATOR ERROR! if you use right oil and right amt and prime the pump with water like your supposed to do they work great!
View Image
Steven Recommends This Generac Product
Manufacturer Response
Brand Rep
Steven,
Thank you for providing us with your candid review of the OneWash residential grade pressure washer. We truly value your feedback! If there are any questions that we can answer for you at any time, please do not hesitate to contact us directly at 888-GENERAC (436-3722). Also, be sure to register your unit for warranty-related purposes via the following link: http://www.generac.com/generac-nation-sign-up?cid=frm-105-aa. Doing so will also allow you to receive future consumer alerts as well.
more
Was this review helpful?
184
Donald M.
Moon Township, PA
Purchased from Pressure Washers Direct
Purchased 5/25/16
Most Helpful Critical Review
REVIEWED
MAY.
28
2016
2 out of 52 out of 52 out of 52 out of 52 out of 5
Started In 3 Tries
When I received my Generac Pressure, I removed it from the box and set it up per instruction. I filled with fuel and supplied oil. I then started it up, 3 tries. And it was ready to go.

My main issue was that the shutoff switch didn't work. I had to choke it out to get it to stop .This is not good for the equipment right out of box. I have seen other complaint with the same issue.

I would think that your company would have this issue fixed by now with the complaints. It seems that... more
Brian, the Pressure Washer Expert
Product Expert
Donald,
Some Generac units have had this problem- we have let them know and they are working to remedy the situation.

Please give the folks at Generac a call, toll free, at 888-436-3722. If there isn't a simple fix you can do yourself (in some cases it has been just connecting a wire), they will direct you to a Factory Authorized Warranty Service location in your area.

Please have the serial number of your pressure washer handy when you call them- they will ask for it. If you also need a copy of your invoice, just click on My Account in the upper right corner of our website and follow the prompts to print one out.

If you do need to take it to be serviced, you may want ot see if there is more than one place in your area. Then call around to see which has the shortest turn-around time so you can be up and running as soon as possible.

We appreciate your business, and apologize for any inconvenience.
more
Manufacturer Response
Brand Rep
Donald,
We're sorry to learn of the issues you've experienced when attempting to turn your pressure washer off. So that we can discuss these symptoms in further detail, please contact us directly at 888-GENERAC (436-3722) with the serial number of your personal unit.
more
Was this review helpful?
51
Darren R.
Buffalo, NY
Purchased from Pressure Washers Direct
Purchased 8/19/16
REVIEWED
SEP.
15
2016
3 out of 53 out of 53 out of 53 out of 53 out of 5
Brand New Generac
Received my new Generac Power Washer from Pressure Washer Direct. Unpacked and assembled it. Started up fine, but when I pulled the trigger on the wand it stalled and cut off. Had to take to local repair shop for repair.

Still waiting for parts. Supposed to be one of the best washers. Unable to play with new toy. Very disappointed.
Brian, the Pressure Washer Expert
Product Expert
Darren,
I am so sorry you're having problems with your new pressure washer! Getting the Warranty Service taken care of right away is the best plan, although I understand your disappointment.

We appreciate your business, and apologize for any inconvenience.
more
Was this review helpful?
10
John James
Mount Sidney, VA
Purchased from Pressure Washers Direct
Purchased 8/29/16
REVIEWED
SEP.
22
2016
1 out of 51 out of 51 out of 51 out of 51 out of 5
So Sorry I Purchased This Product
I purchased this power washer from pressure washer direct over 4 weeks ago, it was delivered approximately within 3-4 days which was promised, all good. I needed to get my house pressure washed and my driveway before resealing so I immediately got the directions out of the box and starting to attach the remaining items, all good. Filled it will oil and fresh gasoline and it started right up but runs really really rough, checked out the trouble shooting sheet to make sure that I had not missed... more
Brian, the Pressure Washer Expert
Product Expert
John,
I understand your frustration with your pressure washer issues, and I'm sorry my suggestion about backing out the unloader a 1/4 turn didn't help.

The Factory Warranty on this unit is from Generac, so it's our job to put you in touch with them and their national network of authorized service locations. I checked Generac's Service Locator; it shows 2 locations within 15 miles of your zip code.

If you would please email us at 'service@pressurewashersdirect.com' and let us know the name and address of the location you brought your pressure washer to, and the name of your contact there, I'll be happy to ask our Generac rep to step in and help expedite your repair.

We appreciate your business, and apologize for any inconvenience.
more
Manufacturer Response
Brand Rep
John,
We are sorry to learn of your frustrating experience. As you have alluded, acquiring applicable warranty coverage requires having the unit serviced by an independent authorized service provider in your area; unfortunately, we are unable to diagnose the unit's issues over the phone or via online correspondence. In regards to your shipping concerns, please know that we work diligently to send out parts as soon as they are ordered by your chosen service provider. While we are please to know that you've taken the unit to an independent authorized service provider to have any issues properly diagnosed and serviced, we encourage you to contact us directly at 888-GENERAC (436-3722) if you would like to discuss your experience in further detail.
more
Was this review helpful?
00
James S.
Selbyville, DE
Purchased from Pressure Washers Direct
Purchased 5/29/16
Total Reviews
2 Reviews
REVIEWED
SEP.
21
2016
5 out of 55 out of 55 out of 55 out of 55 out of 5
Excellent Choice
I recently purchased a home and the driveway and sidewalks have probably never been cleaned...thus the purchase of this Generac Pressure Washer. It was very easy to assemble and it included everything necessary to begin other than the gas.

After checking the water pressure from the spigot, I hooked the unit up to my garden hose, followed all the steps to power the unit up and began spraying.

I took a break after about 45 minutes and was initially disappointed in that the 'off' button... more
Pros: Easy To Use, Features, Easy To Store, Light Weight
James Recommends This Generac Product
Was this review helpful?
00
Donald M.
Houston, TX
Purchased from Pressure Washers Direct
Purchased 9/12/16
Total Reviews
2 Reviews
REVIEWED
SEP.
21
2016
5 out of 55 out of 55 out of 55 out of 55 out of 5
"does What It Says On The Tin"
After endlessly reviewing pressure washers and suppliers, I decided to buy the One Wash from PWD. The price was right, the availabilty was right, free shipping and tax free put them ahead of the pack.

The washer arrived on time and quickly and was undamaged.

I put everything together per instruction, pulled the starter cord twice and off it went. I noticed that one of the plastic fasteners that holds the front panel onto the frame was missing. I contacted PWD through the service e-mail... more
Pros: Easy To Use, Features, I'd Buy It Again, Price
Donald Recommends This Generac Product
Was this review helpful?
00
Dennis R.
Halifax, VA
Purchased from Pressure Washers Direct
Purchased 8/26/16
Total Reviews
2 Reviews
REVIEWED
SEP.
19
2016
5 out of 55 out of 55 out of 55 out of 55 out of 5
Solid Machine
Four different electric pressure washers failed to meet my needs. So, we decided to try a gas PW. The price and feature balance led us to the Generac 6602. It was a good decision.

I followed the easy to understand directions and when ready attempted to start the engine. It started on the third pull. After giving my wife a few simple directions, I turned the PW over to her. She began washing our house, and finished in a few hours. Changing nozzles or using the pull cord to restart... more
Pros: Easy To Use, I'd Buy It Again, Features, Price
Cons: Noisy
Dennis Recommends This Generac Product
Was this review helpful?
00
Michael H.
Tomball, TX
Purchased from Pressure Washers Direct
Purchased 8/26/16
REVIEWED
SEP.
19
2016
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great Unit / Great Price
This is a great unit at a great price. I'm extremely happy with my purchase.

Only downside I have identified on this unit is the handle. It's plastic and not very sturdy. It's definitely the weakest part of the unit.
Michael Recommends This Generac Product
Was this review helpful?
00
Robert E.
Rochester, IN
Purchased from Pressure Washers Direct
Purchased 8/18/16
REVIEWED
SEP.
16
2016
4 out of 54 out of 54 out of 54 out of 54 out of 5
Damaged In Shipment
Choke cable was damaged in shipment, and I had to wait 2 weeks for a new replacement cable to be sent.
Robert Recommends This Generac Product
Brian, the Pressure Washer Expert
Product Expert
Robert,
I'm sorry the folks at Generac were slow in sending you a replacement cable. We appreciate your business, and apologize for any inconvenience.
more
Was this review helpful?
00
Gail F.
Purchased from Pressure Washers Direct
Purchased 8/24/16
REVIEWED
SEP.
15
2016
5 out of 55 out of 55 out of 55 out of 55 out of 5
Easier Than I Thought
I am not well acquainted with using power equipment. I had read the reviews on this pressure washer and had mixed feelings because some people seemed to have problems with it instantly.

Purchased it anyway and then thoroughly read the manual more than a couple times (maybe because I'm a woman!) Ha! Anyway, I am pleasantly surprised and empowered.

I believe that, if you follow the instructions completely, you will have a good experience. The washer did a fantastic job and I am... more
Gail Recommends This Generac Product
Was this review helpful?
00
James B.
Huntingtown, MD
Purchased from Pressure Washers Direct
Purchased 8/21/16
REVIEWED
SEP.
14
2016
4 out of 54 out of 54 out of 54 out of 54 out of 5
Lots Of Power
I've only used my Generac pressure washer three times and it starts after one or two pulls. It has lots of power to clean green moss off the house.

I haven't used the soap feature, but will use it before this winter. I gave four stars until I can truly give it a real test over time. We'll update after more use.
James Recommends This Generac Product
Was this review helpful?
00
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