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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
178 Reviews
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  • Features
  • Specs
  • 13
    Q&A 
  • 178
    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? Call Our Pressure Washer 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

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



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: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
 Weight:85 Lbs.
 Dimensions:33L x 21W x 19H
 Mfr Consumer Warranty:1 Year
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  13 Questions
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 Mike, 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 Mike, 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 Mike, 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 Mike, 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 Mike, 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 Mike, 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 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
Overall Rating
Features
4/5
Quality
4/5
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 (28)
Price (19)
Reliable (15)
High Quality (13)
I'd Buy It Again (13)
Cons
Durability (3)
Unreliable (3)
Low Quality (3)
Heavy (3)
Packaging (2)
87% of respondents would recommend this product to a friend
178 Reviews  Sort by 
 
Mike, the Pressure Washer Expert
Pressure Washer Expert

Product Expert
Total Reviews
120 Reviews
Total Helpful Votes
4370 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.
Mike Recommends This Model
Was this review helpful?
39056
Chad W.
Doral, FL
Purchased from Pressure Washers Direct
Purchased 12/1/14
Total Helpful Votes
21 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?
2112
Stacey B.
Longville, LA
Purchased from Pressure Washers Direct
Purchased 2/27/15
Total Helpful Votes
45 Helpful Votes
Most Helpful Critical Review
REVIEWED
MAR.
21
2015
1 out of 51 out of 51 out of 51 out of 51 out of 5
What The...?
About 15 minutes into use, the pump blew apart. One bolt sheared, and others blew out of the pump housing where the silver part bolts to the pump. A piece of the pump broke off. Up to that point, things were wonderful. What luck.

Of course I can't exchange it. I have to wait for the podunk repair shop to evaluate, submit, get approval, see if warranty will cover, order parts, replace the parts, etc.... and of course, as of a week after I dropped it off to them, they have not looked at it... more
View Image
Cons: Low Quality, Unreliable, Durability, Expensive
Mike, the Pressure Washer Expert
Product Expert
Stacey,
I apologize for the issues you are having with the Simpson unit. However, the unit can't be shipped back due to Federal Shipping regulations on Gassed items. This is why everything we carry comes with a full manufacturer warranty. It is pressure washing season, so many of the service centers are busy.

With that being said, they will take a look at the unit and make the necessary repairs as long as it is covered under the warranty and nothing was used improperly. Again, I apologize for the issues you are having, and if you are unsatisfied with their findings, give me a call directly at 800-710-7499.
more
Manufacturer Response
Brand Rep
Stacey,
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?
4511
John
Purchased from Pressure Washers Direct
Purchased 7/12/14
Total Helpful Votes
32 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
Was this review helpful?
328
Craig Y.
Cumming, GA
Purchased from Pressure Washers Direct
Purchased 5/2/15
Total Reviews
2 Reviews
Total Helpful Votes
13 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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123
Dustin B.
Elk Point, SD
Purchased from Pressure Washers Direct
Purchased 10/1/15
REVIEWED
OCT.
27
2015
2 out of 52 out of 52 out of 52 out of 52 out of 5
Absolutely Terrible
Ordered this unit hoping for a high quality piece of equipment for home use. Unit arrived with a kinked hose, which caused a small pin-hole water leak in the hose.

I proceeded to try to use it anyway, which quickly (after about 10 mins) turned the small pin-hole turned into a bulge, then the hose exploded. THIS WAS THE FIRST USE, unacceptable. VERY unsatisfied, after spending this much money I had higher expectations.
View Image
Mike, the Pressure Washer Expert
Product Expert
Dustin,
I apologize for the unit arriving with a damaged hose. I got in touch with Simpson, and they are sending a new hose directly to you. You should have it in a few days.

Again, I apologize for the damage and any questions give me a call directly at 800-710-7499. Thanks
more
Manufacturer Response
Brand Rep
Dustin,
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?
32
George K.
Boone, IA
Purchased from Pressure Washers Direct
Purchased 5/22/15
Total Helpful Votes
20 Helpful Votes
REVIEWED
JUN.
17
2015
4 out of 54 out of 54 out of 54 out of 54 out of 5
Good Power Washer, But...
Everything that was said about the Honda engine is correct. It's easy to start with plenty of power. The design of the Simpson leaves me wondering what they were thinking. The machine vibrates so much that on concrete, when using the full spray, it spins around 360 degrees and tangles up the hose around the washer. I had a craftsman 2400 pis for 15 years and had zero issues like this.
Would appreciate knowing if there is an adjustment that can be made.
Was this review helpful?
201
Matthew M.
Auburn, WA
Purchased from Pressure Washers Direct
Purchased 5/27/15
Total Helpful Votes
11 Helpful Votes
REVIEWED
JUN.
04
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Powerful!
I've been using a Karcher 2650 PSI 2.6GPM pressure washer for the last two years. It's a powerful machine. But, this thing blows that Karcher right out of the water! They both have the same engine. But the pumps are different. The Simpson's OEM pump is much more powerful and smoother running than the Karcher.

Engine started on the fourth pull out of the box, one pull after it broke in for an hour or so of running. I've changed the oil at one hour of run time to get the break in crud out and... more
Pros: High Quality, I'd Buy It Again, Exceeded Expectations, Fast
Cons: None
Matthew Recommends This Simpson Product
Was this review helpful?
112
Brent B.
Harvey, LA
Purchased from Pressure Washers Direct
Purchased 5/2/15
Total Reviews
2 Reviews
REVIEWED
MAY.
24
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
3100 Psi Simpson Pressure Washer
A good psi washer for the price. I followed the instructions given, and it started up on the first pull. Do not forget that the oil comes with the unit. It reaches to a two story house. The pressure washer came to my house with no delay.
Brent Recommends This Simpson Product
Was this review helpful?
70
William R.
Suwanee, GA
Purchased from Pressure Washers Direct
Purchased 3/27/15
REVIEWED
APR.
20
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Pressure Washer Delivery
Pressure washer arrived without manual, sprayer tips and delivery system for detergent. These came later and pressure washer operated quite well. Can't go wrong with Honda engines.
William Recommends This Simpson Product
Was this review helpful?
71
Alvin J.
Salley, SC
Purchased from Pressure Washers Direct
Purchased 2/2/15
REVIEWED
FEB.
24
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Very Good Purchase!
After completing my research the Simpson Megashot seemed the best bang for the buck for my residential usage. It arrived just outside the expected delivery date with minimal assembly ( 5 Mins ). I've used the washer 3 times since my purchase.

The Honda engine starts and purrs as you'd expect. The pressure is great compared to my old 2600 psi unit. Cleans my old Jeep with minimal effort and in a short time. A high quality unit! I am very pleased with the washer and would highly recommend... more
Alvin Recommends This Simpson Product
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93
Anuj Vohra
Johns Creek, GA
REVIEWED
NOV.
20
2015
1 out of 51 out of 51 out of 51 out of 51 out of 5
1 Star For Quality, 0 Star For Customer Service
I have a 3 month old Simpson and it is the worst product I have used. Following my story that I told the Simpson service guys. But the response is precious. Essentially it says, if the engine is not working and Honda does not cover it, go talk to the gas company. So I am about to call CEO of BP now :-).

Here is the issue that I had:

When I first got this item in August, I had started it up and it worked fine till it ran out of gas. After filling the gas, it was almost impossible to start... more
Cons: Low Quality, Durability, Unreliable, Difficult To Use
Mike, the Pressure Washer Expert
Product Expert
Anuj,
I saw this review on your file; I believe it is a copy of an email that you sent to the folks at Simpson. Our email to you on 11/20 said: "I am sorry to hear that you are having issues with your Simpson pressure washer. Per your statement the machine ran fine on first start up and ran fine through the first tank of fuel; so there was no issue with the machine when it was purchased and delivered ."

The engine is warranted through the folks at Honda; their decisions are based on their tech's report. MDA muddied the waters since any residual gas from setup and testing would have run through with the first tank of gas, when you said the unit worked fine.

A small amount of gasoline sitting for 3 or 4 months (August thru November) will lose most of it's volatile compounds, and can separate into water and varnish- "bad gas". That's what could be gumming up your carb if you didn't use a fuel stabilizer either in your gas can or the tank of the pressure washer. A Pump Saver product (any brand) should also be used if the unit is going to sit idle for more than 30 days.

Factory Warranties cover defects in materials or workmanship. With respect, a stuck carb float from bad gas isn't a defect. To avoid future issues we suggest using fuel stabilizer in your gasoline storage containers and Pump Saver product in your pressure washer.
more
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