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Simpson MegaShot 3100 PSI (Gas-Cold Water) Pressure Washer w/ Honda Engine

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Simpson Pressure Washers and Accessories
Model: MSH3125-S
(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
291 Reviews
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  • Features
  • Specs
  • 16
    Q&A 
  • 291
    Reviews
  • Articles
  • Shipping
  • Accessories
Grade
Style
Water Pressure
3100
PSI
Water Flow
2.5
GPM
Cleaning Speed
7750
Cleaning Units
Engine
Honda GC
Honda GC190 Engine
Reliable engine starts easily, runs quietly

Maintenance-Free OEM Technologies Axial Cam Pump
Robust 2.5 GPM cleaning performance
POWERBOOST® technology delivers increased 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

25 Feet Of 1/4" M22 High Pressure Hose
Lets you work in a wide area


Engine
Engine Brand
Honda GC
Starter
Recoil
CC
190 CC
Fuel Tank Size
1.9 quarts
Consumer Engine Warranty
2 Years
Pump
Pump Type
Axial Cam
Adjustable Pressure
No
Chemical Injection
Siphon Tube
Water Temperature
Cold
Pump Consumer Warranty
1 Year
Water Pressure
3100 PSI
Water Flow
2.5 GPM
Housing
Frame Type
2-Wheel Cart
Wheels
Pneumatic
Hose
Hose Storage
Hook
Hose Length
25 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 (5)
Turbo Nozzle
Sold Separately
Overview
Made in USA
No
Weight
85 Pounds
Grade
Entry Level
Product Length
33 Inches
Product Width
21 Inches
Product Height
19 Inches
Consumer Warranty
1 Year
UPC
879399000959
Model
MSH3125-S
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  16 Questions
Q: What's the dimensions of the box it comes in? Thanks
by Dave from New York on July 10, 2016

A: The shipping box is 33 inches long by 21 inches wide by 19 inches high.
by Brian, Product Expert
Q: Mike,
2 questions:
Wood piers and plastic decks- is this to much pressure for treated wood and plastic decks?

The pressure washer comes with 25' of hose.
if i want to add another 25 or 50' to existing hose do
i need an adapter. If so what is the part number and price.

by Bill Holmes from Illinois on July 04, 2016

A: It would work well for either application and have included the hose information for the extension.

http://www.pressurewashersdirect.com/Simpson-41182/p65405.html
by Brian, Product Expert
Q: Does it have a safety or control release valve to protect the pump?
by Randall Beem from Missouri on June 30, 2016

A: The pump does have a thermal relief valve which will pop if the water inside the pump gets too hot. It is not good for this to have to pump as it meant the seals could have already been prematurely worn from heat.
by Brian, Product Expert
Q: Hi Mike,

I'm looking for pressure washer with 3000 psi, because that's what was recommended to me in order to use a telescopic 25'+ wand with it effectively. Thing is, I'd like to get a unit that has a 3/4" hose. I like the stats on the Simpson MegaShot 3100 PSI (Gas-Cold Water) Pressure Washer With Honda Engine, as well as the price, but it comes with a 1/4" pressure hose.

Can I buy a 50' or even a 100' 3/4" hose and use it with this machine instead? In other words, will it still connect to this machine and gun or no? Do you have a suggested unit that's better, at a similar price? One you recommend? I will be using this annually on my house, deck, fence and drive with sidewalk. Residential, but want it to last, if that helps.

Thanks,
Gordon

by Gordon from Georgia on July 19, 2015

A: Yes, you could purchase a 100 FT hose to use with the unit. However, those hoses are quick connect and would require you purchasing 2 adapters to attach it. You would need adapter model D10037 and D10088. I have attached links for you to view both adapters and the 100FT hose I would recommend.

Adapter D10037

Adapter D10088

100FT High Pressure Hose
by Brian, Product Expert
Q: This pressure washer works fantastic. The only problem is that it shakes so much that the spray tips come out of the holders. When using on concrete the machine will just spin around. What can I do to stop the movement?
by George from Iowa on June 14, 2015

A: Unfortunately, there is no way to stop the vibration of the unit while in operation. However, you will have to make sure you are constantly spraying water. This should cause the unit to not vibrate as much and is not damaging the pump. when the unit is left in idle for to long, the water will heat up and damage the pump seals.
by Brian, Product Expert
Q: how many cc's is the motor?
by Bob from New Jersey on June 07, 2015

A: This unit uses a Honda GC190 which is 190CC's
by Brian, Product Expert
Q: Does this power washer come with the oil for the pump and engine when I make my order?
by Chris Janz from Louisiana on May 04, 2015

A: The pump is sealed (no maintenance of oil) and will be shipped with oil in it. This will also come with a quart of oil shipped with it for the engine. There may be some residual oil in the engine from when it is tested at the factory so we recommend to check the level and add as needed (be sure not to overfill).
by Brian, Product Expert
Q: Can you adjust the pressure?
by George from Massachusetts on April 08, 2015

A: This unit does not have adjustable pressure at the pump, however, it is just a matter of choosing the right colored spray tip for your application.
0 DEGREE (RED TIP)
15 DEGREE(Yellow TIP)
25 DEGREE (Green Tip)
40 DEGREE (White Tip)
Soap Applicator (Black tip)
A. 0 DEGREE - BLASTING
B. 15 DEGREE - STRIPPING
C. 25 DEGREE - CLEANING
D. 40 DEGREE – WASHING
E. 60 DEGREE- SOAP APPLICATION
by Brian, Product Expert
Q: Can this or any pw work with gravity fed water? I would hook it up to a 45gallon water tank not a faucet under pressure.

Thanks

by Rick from Arizona on February 02, 2015

A: No, this unit needs to be attached to a water source with a Min of 20 PSI and 3GPM. The only units that can be gravity fed are the belt drive units.
by Brian, Product Expert
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 Brian, 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 Brian, 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 Brian, 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 Brian, 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 Brian, 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 Brian, 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 Brian, Product Expert
Simpson MSH3125-S Reviews & Ratings
Overall Rating
Features
4/5
Quality
5/5
Performance
5/5
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 (68)
Price (42)
High Quality (36)
I'd Buy It Again (31)
Reliable (31)
Cons
Unreliable (8)
Packaging (5)
Durability (4)
Low Quality (4)
Heavy (4)
88% of respondents would recommend this product to a friend
291 Reviews  Sort by 
 
Brian, the Pressure Washer Expert
Pressure Washer Expert

Product Expert
Total Reviews
122 Reviews
Total Helpful Votes
5702 Helpful Votes
Pressure Washers Direct Recommended

The MSH3125-S 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.

Put it all together and you wind up with a very versatile pressure washer at a very reasonable price.
Brian Recommends This Model
Was this review helpful?
61616
Chad W.
Doral, FL
Purchased from Pressure Washers Direct
Purchased 12/1/14
Total Helpful Votes
29 Helpful Votes
Most Helpful Positive Review
REVIEWED
DEC.
29
2014
5 out of 55 out of 55 out of 55 out of 55 out of 5
Exellent Product
Very very powerful. Great price, starts easy and light on gas.
View Image
Pros: Easy To Use, Price, Easy To Store, I'd Buy It Again
Cons: Should Of Come With Ah Longer Wand
Chad Recommends This Simpson Product
Chad's Experience With Pressure Washers Direct
Web Site
5/5

Service
5/5

Shipping
5/5
"Very fast shipping, good communication."
 more
Was this review helpful?
2917
Brent
Most Helpful Critical Review
REVIEWED
MAY.
14
2016
1 out of 51 out of 51 out of 51 out of 51 out of 5
Dud, Doa Out Of The Boxbox
Arrived with box saturated in oil from pump. Get to return.
Brian, the Pressure Washer Expert
Product Expert
Brent,
Sometimes there is residual oil left in the unit from testing. If the unit is tipped during shipping (even though it's marked "Do Not Tip") a small amount of oil can leak out. When the oil saturates the air filter, or gets in the spark plug well it will prevent the unit from starting- plus we know it's a mess to clean.

Your name and email address didn't match any of our orders. I would hope you refused the shipment since the box was showing the oil damage. The next step would be to contact the folks you bought it from so they could have another one shipped out.

Shipping damage isn't covered by Factory Warranty, but if you need to talk to the folks at Simpson their toll-free number is 877-362-4271.
more
Manufacturer Response
Brand Rep
Brent,
Hello my name is Zac and I am the Assistant Service Manager for the FNA Group who manufactures the Simpson line of gas pressure washers.
First and foremost thank you for your purchase of our Simpson Gas Pressure Washer; if you need further assistance please contact me directly at 1-847-621-8954 or via email at zdawson@fna-group.com. I would be more than happy to help resolve any issues or questions you may have.

Thank you
more
Was this review helpful?
62
John
Purchased from Pressure Washers Direct
Purchased 7/12/14
Total Helpful Votes
36 Helpful Votes
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
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3611
Craig Y.
Cumming, GA
Purchased from Pressure Washers Direct
Purchased 5/2/15
Total Reviews
2 Reviews
Total Helpful Votes
21 Helpful Votes
REVIEWED
MAY.
23
2015
4 out of 54 out of 54 out of 54 out of 54 out of 5
Bad Start Good Ending
When the box arrived the top of the box showed oil had soaked through it. Yes, oil... After opening it up I had determined that the oil filler cap was loose, causing whatever oil remained in the engine compartment to come out. The instructions said the engine is empty of oil but I wouldn't expect it to be completely empty. I also wouldn't' expect it to have that much oil in it. I would also expect that handlers would read the side of the box that says "This end up"!

Anyway,... more
View Image
Pros: I'd Buy It Again, Light Weight
Cons: Packaging
Craig Recommends This Simpson Product
Craig's Experience With Pressure Washers Direct
Web Site
5/5

Service
5/5

Shipping
5/5
"I rated the shipping as 5 stars because pressure washers direct shipped it very quickly. However, after receiving a box that was turned upside down at some point during the storage or shipment I would buy it locally next time. I would prefer to have the opportunity to inspect it before taking delivery."
 more
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205
Ernest F.
Effort, PA
Purchased from Pressure Washers Direct
Purchased 4/5/17
REVIEWED
APR.
27
2017
5 out of 55 out of 55 out of 55 out of 55 out of 5
This New Pressure Washer Is Awesome,definitely Worth The $
I purchased a new pressure washer, it was easy to put together and it's been working great. Definitely worth the money and free shipping.
Pros: Easy To Use, High Quality, Reliable, Light Weight
Ernest Recommends This Simpson Product
Was this review helpful?
00
Leah B.
San Augustine, TX
Purchased from Pressure Washers Direct
Purchased 3/29/17
REVIEWED
APR.
26
2017
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great Product
1st time I used this pressure washer - very happy with it - cleans great, easy to start, easy to use.

Perfect for cleaning around the house.
Pros: Easy To Use, Price, High Quality, I'd Buy It Again, Reliable, Light Weight, has Honda engine
Cons: takes little more time than the more powerful ones but does grea
Leah Recommends This Simpson Product
Was this review helpful?
00
George M.
Savannah, GA
Purchased from Pressure Washers Direct
Purchased 3/8/17
REVIEWED
APR.
23
2017
2 out of 52 out of 52 out of 52 out of 52 out of 5
Highly Disappointed
I have only had this Pressure Washer for 1 month when the pressure pump did not operate properly. There was oil and water leaking from the pump. I only used it 2 times and now it is in the shop for repair. Very disappointed.
Pros: Easy To Use, Price, Quiet
Cons: Unreliable, Packaging, Low Quality
Brian, the Pressure Washer Expert
Product Expert
George,
I am so sorry you're having issues with your pressure washer. I understand your disappointment, but I'm glad it will be serviced under the Factory Warranty. We appreciate your business, and apologize for any inconvenience.
more
Manufacturer Response
Brand Rep
George,
Hello my name is Zac and I am the Assistant Service Manager for the FNA Group who manufactures the Simpson line of gas pressure washers.
First and foremost thank you for your purchase of our Simpson Gas Pressure Washer; if you need further assistance please contact me directly at 1-847-621-8954 or via email at zdawson@fna-group.com. I would be more than happy to help resolve any issues or questions you may have.

Thank you
more
Was this review helpful?
00
Andres G.
Clarksville, AR
Purchased from Pressure Washers Direct
Purchased 3/30/17
REVIEWED
APR.
21
2017
5 out of 55 out of 55 out of 55 out of 55 out of 5
Customer Service Was Great
I recommend buying from Power Equipment Direct, very good customer service!
Pros: Easy To Use, Reliable, Light Weight, Durable
Andres Recommends This Simpson Product
Was this review helpful?
00
Earl S.
Castle Rock, WA
Purchased from Pressure Washers Direct
Purchased 3/27/17
REVIEWED
APR.
18
2017
5 out of 55 out of 55 out of 55 out of 55 out of 5
Good Product
Performs well satisfied with washer. Service for replacement parts is bad.
Pros: Easy To Use, Price, High Quality
Cons: Needs longer handle so it can be easily pulled.
Earl Recommends This Simpson Product
Brian, the Pressure Washer Expert
Product Expert
Earl,
We don't carry replacement parts, and I didn't see any notes on your file about them so I'm checking with the folks at Simpson to see if they have a record of your parts order so it can be expedited.

We appreciate your business and apologize for any inconvenience!
more
Was this review helpful?
00
Richard M.
Sacramento, CA
Purchased from Pressure Washers Direct
Purchased 3/25/17
REVIEWED
APR.
17
2017
5 out of 55 out of 55 out of 55 out of 55 out of 5
Does Exactly What I Expect & Want
Very pleased.
Pros: Easy To Use, High Quality, Reliable, Light Weight
Richard Recommends This Simpson Product
Richard's Experience With Pressure Washers Direct
Web Site
5/5

Service
5/5

Shipping
5/5
"Works great."
 more
Was this review helpful?
00
Tim H.
Burton, MI
Purchased from Pressure Washers Direct
Purchased 3/24/17
REVIEWED
APR.
17
2017
5 out of 55 out of 55 out of 55 out of 55 out of 5
Amazed
I was amazed at the pressure of this powerwasher. It started on the first pull of the rope out of the box- what more could you ask for?!
Pros: Easy To Use, High Quality, I'd Buy It Again, Quiet
Cons: none
Tim Recommends This Simpson Product
Was this review helpful?
00
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