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The Simpson megashot 3100 psi (gas-cold water) pressure washer with honda engine is available for purchase today.

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Simpson Megashot 3100 PSI (Gas-Cold Water) Pressure Washer With Honda Engine

(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
38 Reviews
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  • Features
  • Specs
  • 7
    Q&A 
  • 38
    Reviews
  • Articles
  • Shipping
  • Accessories

Grade
Style
Water Pressure
3100
PSI
Water Flow
2.5
GPM
Cleaning Speed
7750
Cleaning Units
Engine
Honda GC
Need Help? Ask Our Snow Blower Experts.
Honda GC190 Engine
Reliable engine starts easily, runs quietly

Maintenance-Free Brass Axial Cam Pump
Robust 2.5 GPM cleaning performance

Ergonomic Spray Gun
Work longer with less fatigue
Quick connect steel lance accepts standard nozzles & accessories

5 Stainless Steel Quick Connect Nozzles
0°, 15°, 25°, 40° & soap applicator nozzles

Siphon Tube Chemical Application
Just drop tube into pressure washer safe detergent

Robust Trolley & Frame Design
1 1/4", 16 gauge steel tube frame & 12 gauge engine plate
Convenient integrated gun, hose, & wand hanger



Model
  Model Number:MSH3125-S
 UPC:879399000959
 Manufacturer:Simpson
 Made in USA:No
Engine
 Engine Brand:Honda GC
 Starter:Recoil
 HP/CC190 cc
 Fuel Tank Size1.9 quarts
 Engine Consumer Warranty:2 Years
Pump
 Pump Brand:Faip
 Pump Type:Axial Cam
 Adjustable Pressure:No
 Chemical Injection:Siphon Tube
 Pump Consumer Warranty:1 Year
Housing
 Frame Type:2-Wheel Cart
 Wheels:Pneumatic
Hose
 Hose Storage:Hook
 Hose Length:25 ft
 Hose Material:PVC/Plastic
 Hose Diameter:5/16 Inch
 Hose Connections:M22
Spray Gun
 Spray Gun Connection:M22
 Spray Gun Grade:Residential
 Spray Gun Wand:Single Wand
 Spray Tips:Quick Connect Tips (5)
 Turbo Nozzle:Sold Separately
Overview
 Weight:85 Lbs. (38.56 kilograms)
 Dimensions:33L x 21W x 19H
(83.82 x 53.34 x 48.26 cm)
 Mfr Consumer Warranty:1 Year
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  7 Questions
Q: On the Simpson Megashot 3100- if i order it can i get 50 feet of hose with it?
by Peter from Connecticut on July 22, 2014

A: You can order an extension with it to make your hose 50 feet total. This will come with the necessary adapter to join the two hoses together.

25' Extension Hose

You can also purchase a separate 50 foot hose.

50' High Pressure Hose
by Mike, Product Expert
Q: Can I use the MTM Hydro 3.0 Turbo Tip Nozzle on the Simpson Model MSH 3125-S Washer ?
Also, where do I find a tank for the cleanser so the siphon tube can go into and does it mount to the washer ? Thanks a lot

by Pat from New Jersey on July 14, 2014

A: Yes the MTM 3.0 orifice turbo nozzle would be the correct item for you. We do not sell add on detergent tanks here. I would recommend reaching out to the folks at Simpson to see where one can be purchased. Their number is 877-362-4271
by Mike, Product Expert
Q: Does the Simpson 3100 have a container to put cleaning detergent in.
by Jason from Louisiana on March 09, 2014

A: No this unit does not have a detergent tank. It comes with a downstream injection system, which is a siphon hose running off the pump. You would put the siphon hose in a detergent of your choice and it would draw chemicals when using the black tip.
by Mike, Product Expert
Q: I bought a Simpson 3100 from Sam's that was the display model, when I got home there were no spray nozzles. I think the bag blew out of the pickup. Anyway, I need to get tips for the sprayer, a model MSV3100 p/n 60464. Are tips available separately?
by John Owens from New Mexico on August 30, 2011

A: Yes, there are definitely spray tips available for purchase. I am posting a link below to the correct size tips you would purchase for that model:

3.0 Orifice Spray Tips
by Mike, Product Expert
Q: I'M CONCIDERING BUYING A SIMPSON 3100 MODEL MSV3100. DON'T KNOW ANYTHING ABOUT PRESSURE WASHERS.
I'M A FARMER AND I WILL USE IT AS AN ALL AROUND PURPOSE WASHER. IS THIS A GOOD PRESSURE WASHER

by LARRY GUNTER from South Carolina on March 26, 2011

A: Simpson is one of the first and largest pressure washer manufacturers in the U.S. and they make great quality pressure washers. Also, this model has a Honda engine installed on it which is one of the most reliable small engines available for pressure washers. You can definitely use this model pressure washer as an all purpose machine that would be capable of handling a variety of tasks
by Mike, Product Expert
Q: I have moss buildup on my concrete patio which is very thick. I need a pressure washer that will clean down to the concrete in a fairly short period of time. I've used the 2600 psi versions before but they do not cut it. Any advice?
by Robert Olsen from Washington on March 26, 2011

A: I would definitely recommend using a pressure washer with at least 3000 psi. A 3000psi pressure washer is normally sufficient for cleaning concrete. Given the amount of moss build up that you have and depending on how large of an area you have to clean, you might want to purchase a pressure washer with a psi rating between 3400-4000 psi to complete the project as fast as possible.
by Mike, Product Expert
Q: I bought a 3100 psi Simpson PW @ Sam's Club. Can I get a 50 foot hose with fittings for this machine from you/Simpson?
by Bert Solomon from South Carolina on March 26, 2011

A: Yes, we carry a 5/16" 50' hose by Legacy.

I posted a link below to the hose I am referring to:

Legacy 50' High Pressure Hose
by Mike, Product Expert
Simpson MSH3125-S Reviews & Ratings
Write Review
Overall Rating
Features
4/5
Quality
5/5
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 (16)
Reliable (10)
Price (10)
High Quality (8)
Easy To Store (8)
Cons
Heavy (1)
Unreliable (1)
Hard To Wheel Around (1)
Pressure Hose Is Not Fle... (1)
Choke S (1)
94% of respondents would recommend this product to a friend
38 Reviews  Sort by 
 
Mike, the Pressure Washer Expert
Pressure Washer Expert

Product Expert
Total Reviews
117 Reviews
Total Helpful Votes
2360 Helpful Votes
Pressure Washers Direct Recommended

There isn't a big stretch between our "Better" and "Best" choices in this category. Both have good engines and good pumps.

However, this Simpson unit has a durable Honda GC engine, which has earned it's place at the top of the small engine heap for being quieter and easier to start than other engines in its class.

Amongst all of the consumer grade pressure washers we carry, this model has been by far the most reliable and durable pressure washer in this category.
more
Mike Recommends This Model
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22733
John
Purchased from Pressure Washers Direct
Purchased 7/12/14
Most Helpful Positive Review
REVIEWED
AUG.
23
2014
5 out of 55 out of 55 out of 55 out of 55 out of 5
Power Washed Down To The Bare Wood!
My deck and ramp had years of sealer and stain and looked horrible with uneven wear spots, damaged surfaces, and stains. I used my Simpson to remove it all in one step). It worked and it's down to the bare cedar wood and staying that way!
View Image
Pros: Easy To Use, Price, Features, Quiet
John Recommends This Simpson Product
John's Experience With Pressure Washers Direct
Web Site
5/5

Service
4/5

Shipping
5/5
"I needed a power washer strong enough to remove several layers of sealer and stain from both cedar decking and pressure treated decking. I used my Simpson to get it down to the bare wood in one step. It took some time but was well worth it."
 more
Was this review helpful?
00
Philip Ardoin
Ville Platte, LA
Purchased from Pressure Washers Direct
Purchased 7/1/14
Most Helpful Critical Review
REVIEWED
JUL.
22
2014
3 out of 53 out of 53 out of 53 out of 53 out of 5
Cannot Connect Hose To Washer
I received the washer 2 days ago. I found that I could not attach the high pressure hose to the pressure washer. It is apparently missing threads. I contacted the company and they are supposed to be sending out a replacement hose. Waiting to use.
View Image
Philip Recommends This Simpson Product
Mike, the Pressure Washer Expert
Product Expert
Philip,
That is very odd... I'm glad the folks at Simpson are taking good care of you. We will follow up and make sure this is just a one-time thing, and not a bad batch of hoses. Thank you for letting us know.

We appreciate your business, and apologize for any inconvenience.
more
Was this review helpful?
20
Kenneth S.
Purchased from Pressure Washers Direct
Purchased 8/6/14
REVIEWED
AUG.
27
2014
4 out of 54 out of 54 out of 54 out of 54 out of 5
Second Unit Is Excellent
First unit received was a used unit. After I contacted Pressure Washers Direct they made arrangements for the return and a week later got a new unit... machine works awesome.
Kenneth Recommends This Simpson Product
Mike, the Pressure Washer Expert
Product Expert
Kenneth,
All of the merchandise we sell is new- we don't sell used or refurbished merchandise.

According to your file the unit was damaged during shipment. We were able to help with the damage claim since it shipped from our warehouse, and we were happy to send you a replacement unit.
more
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00
Frank S.
Rock Hill, SC
Purchased from Pressure Washers Direct
Purchased 6/28/14
Total Reviews
2 Reviews
REVIEWED
AUG.
17
2014
5 out of 55 out of 55 out of 55 out of 55 out of 5
Easy To Operate
Easy to start. Easy to operate.
Pros: Easy To Use, Price, Exceeded Expectations, Quiet
Frank Recommends This Simpson Product
Was this review helpful?
00
Brad B.
Luling, LA
Purchased from Pressure Washers Direct
Purchased 10/27/13
Total Helpful Votes
28 Helpful Votes
REVIEWED
JAN.
03
2014
5 out of 55 out of 55 out of 55 out of 55 out of 5
Works Great Around The House
Megashot 3100 works great for the use around the house- I pressure wash a large driveway and the brick on the house.

Very good pressure washer with the Honda engine for easy starts.
Pros: Durable, Easy To Use, Exceeded Expectations, Reliable
Brad Recommends This Simpson Product
Was this review helpful?
285
Robert P.
Hampstead, NC
Purchased from Pressure Washers Direct
Purchased 4/1/14
REVIEWED
MAY.
15
2014
5 out of 55 out of 55 out of 55 out of 55 out of 5
Deck And Porch Furniture Look New
Had the deck and porch furniture for nine years. Used the Simpson pressure washer (yellow nozzle) to clean the furniture. Looks new.

Next project is the driveway.
Pros: Features, Price, Reliable, Easy To Store
Robert Recommends This Simpson Product
Was this review helpful?
70
John J.
Port Jervis, NY
Purchased from Pressure Washers Direct
Purchased 5/22/14
REVIEWED
JUN.
19
2014
4 out of 54 out of 54 out of 54 out of 54 out of 5
Very Happy Consumer
Washed everything I can think of however the tube does not siphon for adding soap can someone give me advice.
Pros: Easy To Use, Easy To Store
Cons: Unreliable, Haa, Does Not Siphon Soap Detergent
John Recommends This Simpson Product
Mike, the Pressure Washer Expert
Product Expert
John,
Pages 13 & 14 of the Owner's Manual show how to properly attach the siphon hose, and to use the black spray tip that allows the siphon action to happen. Soap is only applied at low pressure.

If you've got the siphon hose hooked up properly & you're using the black tip but soap isn't flowing, you may need to check what you're using for soap. It should be labeled pressure washer safe so it doesn't eat through the pump seals, and it should also be diluted according to the maker's instructions.

The soap solution needs to be fairly watery so the siphon hose can suck it up; if it's thick like dish detergent it won't siphon properly. Some pressure washer safe detergents can be used straight from the bottle, some need to be mixed with water before they're used.
more
John's Experience With Pressure Washers Direct
Web Site
4/5

Service
4/5

Shipping
4/5
"Simple website to use just click and buy."
 more
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61
William B.
Garner, NC
Purchased from Pressure Washers Direct
Purchased 5/11/14
REVIEWED
JUN.
28
2014
5 out of 55 out of 55 out of 55 out of 55 out of 5
Pressure Washer
The only thing I dislike is I like to unscrew hose from washer but find that it's hard to do. Threads seem to get messed up from all the vibrations.
Pros: Easy To Use, Price, Easy To Store, Light Weight
William Recommends This Simpson Product
Mike, the Pressure Washer Expert
Product Expert
William,
If it's the garden hose that is giving you problems, getting a quick-connect kit from the hardware store will save the threads and your knuckles- they usually run about $5 for plastic and under $10 for brass. We sell Garden Hose Quick Connect Kits, but you would also pay shipping from us- it might be less expensive to get the connectors locally.

If it's the high pressure hose that is tough to connect, then an M22 Quick Connect Kit will change the threaded M22 threaded connector to a snap-in quick connector.
more
William's Experience With Pressure Washers Direct
Web Site
5/5

Service
5/5

Shipping
5/5
"Got my pressure washer in a timely manner."
 more
Was this review helpful?
40
Michael R.
Antrim, NH
Purchased from Pressure Washers Direct
Purchased 6/25/14
REVIEWED
JUL.
21
2014
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great Machine
Takes about 15 - 20 minutes to setup. Directions are not very well laid out but you can get through it by flipping back and forth.

Machine itself is nice and beefy. Honda engine is top notch. I would recommend to anyone who is looking for a nice, powerful unit for home based projects.
Pros: Easy To Use, High Quality, I'd Buy It Again, Exceeded Expectations
Michael Recommends This Simpson Product
Was this review helpful?
20
Dale S.
Saint Charles, MO
Purchased from Pressure Washers Direct
Purchased 6/23/14
REVIEWED
JUL.
15
2014
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great Power Washer
This was exactly what I was looking for. Gentle enough to wash the car and powerful enough to easily clean the concrete.

My only disappointment was the soap feature. I really wanted the high pressure (or higher pressure) soap feature to quickly wash the cars. The soap nozzle disperses the soap over the car but I still have to hand wash. I guess it's for soaping with detergents that have to soak and don't require high pressure. Not a deal-breaker by any means, the correct nozzle rinsed... more
Pros: Easy To Use, Price, Easy To Store, I'd Buy It Again
Dale Recommends This Simpson Product
Mike, the Pressure Washer Expert
Product Expert
Dale,
Most pressure washers dispense soap at low pressure. Using the black tip opens the valve to the soap siphon and allows the water rushing by to draw the soap up into the water stream. Low pressure prevents driving soap deep into cracks where it would be difficult to rinse out.

If you'd like a nice layer of foam for car washing, take a look at this Detergent Foamer from MTM Hydro. The video shows how well it works washing cars quickly.
more
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20
Charlie R.
Mendon, VT
Purchased from Pressure Washers Direct
Purchased 6/22/14
REVIEWED
JUL.
13
2014
5 out of 55 out of 55 out of 55 out of 55 out of 5
Nice Unit
Bought this to replace a similar one that I used for years and gave to my son. Very pleased with the performance and quality more than adequate for my medium duty usage.
Charlie Recommends This Simpson Product
Was this review helpful?
20
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