SIMPSON Pro Series with AAA Triplex Pump 3700-PSI 2.5-GPM Cold Water Gas Pressure washer with 5 Spray Tips

Name: SIMPSON Pro Series with AAA Triplex Pump 3700-PSI 2.5-GPM Cold Water Gas Pressure washer with 5 Spray Tips
Brand: SIMPSON
SKU: 5014825459
Price: 679 USD
Availability: InStock
Rating: 4.6 (3526 reviews)

Shop SIMPSON

4.6

3526

Here are some similar items...

SIMPSONPro Series with AAA Triplex Pump 3500-PSI 2.5-GPM Cold Water Gas Pressure washer with 5 Spray Tips

3526

GreenworksAxial Cam 2100-PSI 1.2-GPM Cold Water Electric Pressure washer with 3 Spray Tips

4831

This Item Is Featured In

SIMPSON SIMPSON 3700 PSI 2.5 GPM Pro Series Gas Pressure Washer with 14.5-in PRO Surface Cleaner and Multi-Surface Cleaner

SIMPSON Pro Series with Triplex Pro Pump (49-State) 3700 PSI 2.5-GPM Cold Water Gas Pressure Washer Combo Kit

SIMPSON SIMPSON 3700 PSI 2.5 GPM Pro Series Gas Pressure Washer with 9-ft Extension Wand and Multi-Surface Cleaner

SIMPSON SIMPSON 3700 PSI 2.5 GPM Pro Series Gas Pressure Washer with 14.5-in PRO Surface Cleaner and Multi-Surface Cleaner

Best Price. Guaranteed

Find a lower price on an exact item? We'll match it. Some exclusions apply.

Price Guarantee

FREE Returns

Return it in store or ship it back for free. Eligibility rules apply.

Return Policy

Pay Your Way

Credit card, PayPal or Buy Now, Pay Later options available at checkout. Your choice.

Payment Options

The SIMPSON® Pro Series is designed to meet the rigorous demands of the cleaning pro. Heavy-duty pressure washers with flow and reliability. Perfect for contractors who specialize in deck cleaning, wood restoration, paint preparation, graffiti removal, and all other professional cleaning services. Equipped with a premium CRX® engine built with high-quality components, designed for optimum performance and renowned for being easy to start. AAA® triplex pumps with patent-pending PowerBoost® Technology provides higher pressure at the nozzle resulting in greater impact and cleaning performance.

CRX225 engine with a low oil shutdown feature
Reliable AAA® Triplex PRO Pump with PowerBoost Technology delivering higher pressure at the nozzle
Steel-braided Morflex Hose 5/16 in x 50 ft kink and abrasion resistant hose with polyurethane outer jacket
Steel frame construction with a powder-coated finish for durability and corrosion resistance
10 in Premium pneumatic tires for ease of maneuverability across various terrain
5 Quick connect nozzle tips: 0°, 15°, 25°, 40° and soap to use for a variety of cleaning applications
Unit Dimensions: L: 21” x W:24” x H: 34”, Unit Weight: 79 lbs
Exclusive 5 year engine warranty, 5 year pump, 10 year frame, 90 day limited accessory warranty
This product does not ship to California.

General
Package Contents	Pressure Washer, Spray Gun, Spray Lance, Nozzles, Hose, Owner's Manual, Quick Set Up Guide, Engine Oil	Start Type	Manual
Type	Pressure washer	Wheel Type	Pneumatic
Usage	Heavy-duty	Power Source	Gas
Grade	Residential	Series Name	Pro Series with AAA Triplex Pump
Hose Material	Polyester	Wheel Material	Heavy-duty polyurethane
Nozzle Type	Pro style tips with quick disconnect	Color/Finish Family	Black
Pump Type	Triplex	Manufacturer Color/Finish	Black

Dimensions
Depth (Inches)	21	Fuel Capacity (Gallons)	1
Height (Inches)	34	Hose Diameter	5/16-in
Weight (lbs.)	79	Hose Length (Feet)	50
Width (Inches)	24	Wheel Diameter (Inches)	10
Amperage	0	Engine Oil Capacity (oz.)	20.48
Cord Length (Feet)	0	Battery Amp Hours	0

Features
Brushless	No	Engine Torque (Foot/lbs.)	9.2
Variable PSI	No	Number of Batteries Included	0
Water Temperature	Cold	Pressure Rating (PSI)	3700
Wheels Included	Yes	Quick Connect Tips	Yes
Water Tank	No	Chemical/Detergent Injection	No
Includes Surface Cleaner	No	Flow Rate (GPM)	2.5
Soap Applicator Included	No	Lowe's Exclusive	No
Adjustable Wand	Yes	Engine Oil Included	Yes
Battery Recharge Time (Hours)	0	Engine Horsepower	2.9
Battery Run Time (Hours)	0	Recommended Engine Oil	10W-30
Corded/Cordless	Cordless	Number of Spray Tips Included	5
Detergent Tank Options	None	Interchangeable Wands	No
Engine Brand	CRX	Integrated Storage	No

Warranty
Warranty	3-year limited

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -	CARB Compliant	No
Safety Listing	Not safety listed

Miscellaneous
UNSPSC	47121800

Check out the Best Selling Pressure Washers on Lowes.com

Review

4.6 out of 5

3526 Reviews

66% Recommend this product

Ratings may include incentivized customer reviews.

Read All Reviews

+ 140

What Customers Are Saying

Customers overwhelmingly praise this pressure washer for its exceptional 3500 PSI cleaning power, effortless first-pull starting, and solid build quality. Most highlight impressive results on concrete driveways, siding, and patios, noting it outperforms previous models. Reviewers consistently describe it as well-built with a reliable engine, lightweight, and easy to operate. Many express confidence in its longevity and value. A few report minor assembly alignment issues or occasional unit failures, and some mention unhelpful customer service, but these concerns are vastly outweighed by positive feedback.

Customer review summary generated by AI, including incentivized reviews.

3526 Customer Reviews

Sort By

Plenty of pressure and then some

Just washed my house and it worked great,the power washer had plenty of power,

Meter manOctober 6, 2026

From simpsoncleaning.com

Quality Product

I’ve been really impressed with the SIMPSON 61370. It has plenty of power for everything I’ve needed it for, from cleaning the driveway and patio to washing the house and vehicles. The engine starts easily, the machine feels solid and well-built, and the large wheels make it fairly easy to move around.

Boating1874October 6, 2026

From simpsoncleaning.com

Just received

Looks great. Cant wait to use it. I will come in handy.

DennisxxxxOctober 6, 2026

From simpsoncleaning.com

Wonderful

It pressure washes really really well and I recommend this product.

Darbs312October 5, 2026

From simpsoncleaning.com

Great power

I bought it earlier in the year. This has been a champ, easy to start and operate.

G-PAOctober 5, 2026

From simpsoncleaning.com

works great

very easy to assemble started first pull. it is a little loud

chaandiOctober 5, 2026

From simpsoncleaning.com

Employees

Would Recommend

Thank you to the employee who helped us load this up, you have an amazing staff!

TisaOctober 5, 2026
From Pro Series with AAA Triplex Pump 4000-PSI 3.5-GPM Cold Water Gas Pressure washer with 5 Spray Tips Verified Purchaser

Was this Review Helpful ?

Response from SIMPSON Team

It's great to hear you had a great experience at your local Lowe's & we're confident you will be just as happy with the performance o... Read More

SIMPSON TeamOctober 6, 2026

simpson

Simpson rocks

Everybody loves Simpson, because they’re simple and the best. Love the product. I’ll always buy Simpson.

CLWWOctober 5, 2026

From simpsoncleaning.com

Excellent washer

Love this Simpson pressure washer! My second one! First lasted 8 years of high usage by myself and family members and never failed. I gave it to my son in law a week ago and purchased this one! I am confident it will outlast my old bones!

Fillmore1957October 5, 2026

From simpsoncleaning.com

At last, a great PW

Finally invested in a high-quality pressure washer and it has worked great

EminemilyOctober 5, 2026

From simpsoncleaning.com

Page 1 Page 2 Page 3 Page 10

38 Questions

Read All Q&A

Sort By

SIMPSON: Featured Videos

COMPARE PRODUCTS

		Name	Current Item SIMPSONPro Series with AAA Triplex Pump 3700-PSI 2.5-GPM Cold Water Gas Pressure washer with 5 Spray Tips
		Ratings	3526
		Pressure Rating (PSI)	3700
		Weight (lbs.)	79
		Package Contents	Pressure Washer, Spray Gun, Spray Lance, Nozzles, Hose, Owner's Manual, Quick Set Up Guide, Engine Oil
SIMPSONPowerShot HONDA GX200 Engine 3500-PSI 2.5-GPM Cold Water Gas Pressure washer with 5 Spray Tips	SIMPSONAluminum, HONDA GX200 Engine 3600-PSI 2.5-GPM Cold Water Gas Pressure washer with 5 Spray Tips	SIMPSONPowerShot HONDA GX270 Engine 4000-PSI 3.5-GPM Cold Water Gas Pressure washer with 5 Spray Tips	SIMPSON49-State PowerShot 4400-PSI 4-GPM Cold Water Gas Pressure washer with 5 Spray Tips	SIMPSONAluminum, HONDA GX200 Engine 3400-PSI 2.5-GPM Cold Water Gas Pressure washer with 5 Spray Tips	EGOPOWER+ 3200-PSI 1.2-GPM Cold Water Battery Pressure washer with 5 Spray Tips 6 Ah (Battery Included) (Charger Included)	SIMPSON2.5 GPM PowerShot 3700-PSI 2.5-GPM Cold Water Gas Pressure washer with 5.0 Spray Tips	WestinghouseWPX4400 Heavy Duty Triplex Pump 4400-PSI 4.2-GPM Cold Water Gas Pressure washer with 5 Spray Tips	Briggs & StrattonElite 4000-PSI 4-GPM Cold Water Gas Pressure washer with 5 Spray Tips
1270	234	622	708	293	1635	214	1825
3500	3600	4000	4400	3400	3200	3700	4400	4000
74	78	120	138	81	65.59	79	142	140
Pressure Washer, Spray Gun, Spray Lance, Nozzles, Hose, Owner's Manual, Quick Set Up Guide, Engine Oil	Pressure Washer, Spray Gun, Spray Lance, Nozzles, Hose, Owner's Manual, Quick Set Up Guide, Engine Oil	Pressure Washer, Spray Gun, Spray Lance, Nozzles, Hose, Owner's Manual, Quick Set Up Guide, Engine Oil	Pressure washer, hose, lance, nozzles, oil, siphon tube, spray gun, manual, and quick setup guide	Pressure Washer, Handle, Spray Gun, Spray Wand, Spray Nozzles, High Pressure Hose, Instruction Manual, Engine Oil	Tool, 2 Batteries, Charger	Pressure washer, hose, spray gun, spray lance, spray nozzles, siphon tube with filter, engine oil, owner's manual, and quick setup guide	Oil, Oil Funnel, Nozzle Tips, Hose, Pro-Style Wand	Gas Powered Pressure Washer