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The Simpson professional 4200 psi (gas - cold water) aluminum frame pressure washer w/ honda engine & cat pump is available for purchase today.

Read Simpson ALH4240 reviews before checking out.


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Simpson Professional 4200 PSI (Gas - Cold Water) Aluminum Frame Pressure Washer w/ Honda Engine & CAT Pump

(Based on expert analysis, manufacturer ratings and customer reviews)
4.0 out of 54.0 out of 54.0 out of 54.0 out of 54.0 out of 5
10 Reviews
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Factory DirectFactory Direct
Ships in 2-5 Business Days

Factory items ship direct from the manufacturer. Shipping times vary.
$1,299.00

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Free Freight$1,299.00
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$1,299.00
(as of 07:32 CST - Details)
Sales Tax in 26 states
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  • Features
  • Specs
  • 2
    Q&A 
  • 10
    Reviews
  • Articles
  • Shipping
  • Accessories
Grade
Style
Water Pressure
4200
PSI
Water Flow
4.0
GPM
Cleaning Speed
16800
Cleaning Units
Engine
Honda GX
Honda GX390 OHV Commercial Series Engine With Oil Alert«
Starts easy, runs smoothly, & delivers high output; engine oil is included
Delivers up to 4200 PSI to handle large jobs efficiently

CAT« Industrial Triplex Plunger Pump
Triplex pumps run cooler & last longer than axial pumps; can be rebuilt
Develops up to 4 gallons per minute to clean quickly

Professional Grade Aluminum Platform
Brushed extruded aluminum tubing is strong & lightweight
10 year Factory Warranty on frame components

Dial-N-Wash« Spray Gun
Adjust pressure from 1000 PSI to MAX PSI with a simple twist
Safety lock-out to prevent gun from being accidentally activated

Pro-Style Spray Wand With 5 Quick Connect Nozzle Tips
0░, 15░, 25░, 40░, & soap applicator nozzles shape the spray

3/8" x 50' High Pressure Steel-Braided Hose
Non-marring, kink & abrasion resistant hose lets you work in a wide area

On-Board Accessory Storage
Keeps hose, spray wand & nozzles organized

Siphon Tube Detergent Injection
Lets you use a wide variety of pressure washer-safe cleaners


Need Help? Ask Our Snow Blower Experts.
Engine
Engine Brand
Honda GX
Starter
Recoil
CC
389 CC
Fuel Tank Size
6.4 quarts
Consumer Engine Warranty
3 Years
Commercial Engine Warranty
3 Years
Pump
Pump Brand
Cat
Pump Type
Triplex Plunger
Adjustable Pressure
Yes
Chemical Injection
Siphon Tube
Pump Consumer Warranty
2 Years
Pump Commercial Warranty
2 Years
Housing
Frame Type
Aluminum
Wheels
Pneumatic
Hose
Hose Storage
Hook
Hose Length
50 Feet
Hose Material
Rubber
Hose Diameter
3/8 Inch
Hose Connections
Quick-Connect
Spray Gun
Spray Gun Connection
Quick-Connect
Spray Gun Grade
Professional
Spray Gun Wand
Single Wand
Spray Tips
Quick Connect Tips (5)
Turbo Nozzle
Sold Separately
Overview
Weight
124 Pounds
Product Length
40 Inches
Product Width
24 Inches
Product Height
26 Inches
Consumer Warranty
1 Year
Commercial Warranty
1 Year
UPC
879399001345
Model
ALH4240
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  2 Questions
Q: Hi Mike, Is the pressure of this model adjustable only through the gun or can you adjust the pressure on this cat pump as well?
by Mark from Missouri on March 08, 2016

A: There is a regulator between the spray gun and spray lance to allow you to dial down your pressure. There is ALSO an unloader valve on the CAT pump allowing you to adjust the pressure there as well.
by Brian, Product Expert
Q: Hi Mike. Do you know what model/part CAT pump is in the ALH4240? Thank you
by Cliff from New Hampshire on March 17, 2015

A: The CAT pump model would be the 67DX pump.
by Brian, Product Expert
Simpson ALH4240 Reviews & Ratings
Overall Rating
Features
4/5
Quality
4/5
Performance
4/5
Value
4/5
Overall
4.0 out of 54.0 out of 54.0 out of 54.0 out of 54.0 out of 5
Pros
Easy To Use (4)
Durable (3)
Features (2)
Reliable (2)
Exceeded Expectations (2)
Cons
Low Quality (2)
Unreliable (1)
Heavy (1)
Handle Too Low (1)
Bad Instructions (1)
70% of respondents would recommend this product to a friend
10 Reviews  Sort by 
 
Cooper G.
Denton, TX
Purchased from Pressure Washers Direct
Purchased 4/20/15
Total Reviews
2 Reviews
Most Helpful Positive Review
REVIEWED
MAY.
12
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Awesome Bank For Your Buck
This is a great deal for a really high quality pressure washer. You cant beat this combo of Honda and Cat. This thing comes with everything you need. It is basically fully assembled right out of the box. All I had to do was put the handle on it, put oil in the motor (supplied), add gasoline and I was done. It started on the first pull.

This thing has a crazy amount of power. I was skeptical about the pressure regulation on the wand but it turned out to be one of the most convenient... more
View Image
Pros: Durable, Easy To Use, Price, Exceeded Expectations
Cooper Recommends This Simpson Product
Was this review helpful?
50
Daniel S.
San Antonio, TX
Total Reviews
2 Reviews
Most Helpful Critical Review
REVIEWED
JUL.
27
2016
2 out of 52 out of 52 out of 52 out of 52 out of 5
Re: Not As Happy As I Should Be! Must Read
Don't waste your money on this unit because it will not live up to your expectations. If you read the original review then you already know about the initial smaller problems like malfunctioning trigger gun, busted vent cap, etc. Now the problems have escalated to a new level with the cat pump leaking from the brass housing that contains the plungers.

Very frustrated with purchase! Originally I was told from my merchant (P.W.D.) to take unit to authorized repair center. I did, but once unit... more
Cons: Rea, Readboth Reviews
Daniel Does Not Recommend This Product
Manufacturer Response
Brand Rep
Daniel,
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?
-10
Nathan V.
Flagstaff, AZ
Purchased from Pressure Washers Direct
Purchased 1/19/16
REVIEWED
FEB.
16
2016
4 out of 54 out of 54 out of 54 out of 54 out of 5
Mixed Feelings
Pressure washer wand started leaking badly within two hours of very first use. Need to send back, but also need the machine!

Overall, the pressure washer has good power, but it's too early to tell about the overall quality. Very disappointed that I have to deal with the wand situation.
Pros: Easy To Use, Fast, Easy To Store
Cons: Low Quality, Bad Wand
Nathan Does Not Recommend This Product
Brian, the Pressure Washer Expert
Product Expert
Nathan,
I am sorry you're having an issue with your wand leaking- I understand how disappointing that can be! First of all, would you please check the wand/handle connection to make sure there isn't something caught in the threads to cause the leak, and that the wand is seated snugly when it's connected to the handle?

If all is well there, then please contact Zac Dawson at Simpson: 1-847-621-8954 or via email at zdawson@fna-group.com. He will be happy to help you in any way possible. If you would please have the serial number of your pressure washer handy when you call, or include it in your email the folks at Simpson will find it helpful.

I don't believe they will have you send the wand back; they should send out a replacement promptly so you lose as little cleaning time as possible.

If there's anything else I can assist with, please feel free to contact me directly at 800-710-7499. We appreciate your business, and apologize for any inconvenience.
more
Was this review helpful?
20
Brian B
Battle Creek, MI
REVIEWED
MAY.
23
2016
5 out of 55 out of 55 out of 55 out of 55 out of 5
A Beast
Just used my new Simpson pressure washer today. All I can say is this thing is a "beast".

Filled up with premium gas , fired up on the very first pull. I used the siphon tube and the soap tip to put some soap on my vinyl siding then cleaned off with the 15 degree tip. Siding looks brand new again.

I did purchase the General Pump 4.0 Oriface Turbo Nozzle. Made cleaning my concrete driveway soooo easy.

If you're looking for a heavy duty pressure washer I highly... more
Brian Recommends This Simpson Product
Was this review helpful?
00
Mike W.
Lake Jackson, TX
Total Helpful Votes
19 Helpful Votes
REVIEWED
MAR.
25
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great Product
I purchased this washer to clean my house and farm equipment. It has done a great job. I have washed the house, driveway, mower, truck and trailer. I am very impressed with the performance of this machine. I would recommend it to anyone needing a pressure washer.
Pros: Durable, Easy To Use, Exceeded Expectations, Reliable
Cons: Expensive
Mike Recommends This Simpson Product
Was this review helpful?
198
Donald B.
Ogdensburg, NY
Purchased from Pressure Washers Direct
Purchased 6/12/15
REVIEWED
AUG.
07
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Crazy Powerful
I needed a power washer with allot of psi to remove some material from my deck and this pressure washer fit the bill. Took a little longer than I expected to get it as it came direct from the factory. When I got it and assembled it (which was easy), I filled the oil and gas up and it started first pull. I have only used it about 10 hrs total but it works great.

The adjustable pressure feature is really nice. probably more than the average homeowner needs but I like to go over not under. I... more
Pros: Easy To Use, Durable, Features, Reliable
Cons: Handle Too Low
Donald Recommends This Simpson Product
Was this review helpful?
20
James C.
Baton Rouge, LA
Purchased from Pressure Washers Direct
Purchased 3/31/15
REVIEWED
MAY.
13
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great Pressure Washer
I've not found anything that I need this volume of pressure to clean. Still looking.
James Recommends This Simpson Product
Was this review helpful?
32
Hung H.
Hudson, WI
Purchased from Pressure Washers Direct
Purchased 6/14/15
REVIEWED
JUL.
13
2015
3 out of 53 out of 53 out of 53 out of 53 out of 5
Pressure Hose Won't Stop Leaking
Everything looks good but when I turn on water, it leaks. It was the crappy pressure hose and it leaks at the brass connector.
Hung Does Not Recommend This Product
Manufacturer Response
Brand Rep
Hung,
First and foremost thank you for the purchase of one of our Simpson pressure washers. We greatly apologize for any issue you may have had. Please contact Zac Dawson at zdawson@fna-group.com and he would be more than happy to help in any way possible.

Thank you

Regards,

Simpson Pressure Washer Team
more
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23
Rob Y.
Livingston, NJ
Purchased from Pressure Washers Direct
Purchased 6/21/15
REVIEWED
JUN.
30
2015
2 out of 52 out of 52 out of 52 out of 52 out of 5
Horrible Return Policy+ No Win On This Situation.
Popular site, was on sale but a little nervous with the "if there's a problem" situation thought. I called a few times to ask questions and I'm pretty sure I spoke to a man and asked him, what if I get this thing and it has a problem right out of the box. He said something to the effect we would get you a new one or you could return it etc etc. Even though the policy says can't be returned after gassing and oiling which makes no sense. So bought this ALH4240 about a week ago and it... more
Cons: Low Quality, Unreliable
Rob Recommends This Simpson Product
Brian, the Pressure Washer Expert
Product Expert
Rob,
I apologize for the issues you are having with the unit. However, all of our units are covered by a full manufacturer warranty and they will help you get the unit up and running at a local service center.

Engine powered equipment cannot be returned once it has been gassed or oiled due to federal shipping regulations. If the product has been gassed or oiled, it needs to be taken to an authorized service center for repair which may be covered under warranty.

Any issues with the manufacture, we are here to support you. I understand 2 weeks is frustrating, but it is the reason the manufacturer warranty is in place. Any questions feel free to call me directly at 800-710-7499. Thanks
more
Manufacturer Response
Brand Rep
Rob,
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?
23
David M.
Suffield, CT
Purchased from Pressure Washers Direct
Purchased 5/4/15
Total Reviews
2 Reviews
REVIEWED
MAY.
25
2015
4 out of 54 out of 54 out of 54 out of 54 out of 5
Good Once You Get It Going.
Took over two weeks to get the product, and it showed in stock when purchasing. Assembled fine, followed instructions to the letter. Instructions aren't included for the cat pump, but they are available online. Took about 30 minutes and 50+ pulls before it started initially.

Very disappointing that it took so much to get it running. Once it did start, power was reasonable. Love the pump, this model Honda is a pain and has design improvements begging to be done.
Pros: Features
Cons: Heavy, Bad Instructions
David Recommends This Simpson Product
Was this review helpful?
09
Free Freight
  • Ships via Semi-Truck
  • Curb Side Delivery
  • Free to Lower 48 States
We currently CANNOT ship this product to Alaska, Hawaii or any destination outside of the United States
Lift Gate Services
  • Safely Lowers Products Off the Truck
  • Requires Special Hydraulic Lift
  • $50.00 Service Charge
 Learn More  Learn More
 


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