Best Pressure Washers with Soap Tank in 2026: 15 Picks Ranked by Specs
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An onboard detergent reservoir eliminates the hassle of dragging siphon hoses or mixing buckets around your yard. To find the best pressure washers with soap tank in 2026, we compared 15 models using the specifications published on their listings.
The Westinghouse 3200 PSI Electric Pressure Washer takes the top spot by pairing a 3200 PSI rating with an integrated 0.61-gallon soap tank and five nozzle choices. This guide helps you compare power sources, pressure ratings, and tank capacities so you can choose the right machine for your cleaning needs.
Quick picks
The best fit for you
- You need strong electric power with onboard detergent Westinghouse 3200 PSI Electric Pressure Washer You get 3200 PSI electric pressure and an onboard 0.61-gallon soap tank for versatile cleaning.
- You want a lightweight electric washer for vehicles Westinghouse 2300 PSI Compact Electric Pressure Washer Its 19.8-pound weight and 2300 PSI output provide manageable handling for routine vehicle washing.
- You need the most compact model for storage Kärcher K1700 Cube Compact Pressure Washer A 15.5-pound weight and 11.5-inch height allow you to store it easily in tight spaces.
- You need maximum pressure and high water flow Imdot 4200 PSI Gas Pressure Washer A 4200 PSI rating and 4.0 GPM flow deliver top-tier output for heavy-duty outdoor cleaning.
Our 15 picks
Westinghouse 3200 PSI Electric Pressure Washer
Best for: all-around electric washing with onboard detergent
- Features
- Soap Tank (what this guide is about)
- Maximum Pressure
- 3200 Max PSI
- Flow Rate
- 1.76 Max GPM
- Power Source
- Electric
- Hose Length
- 25’
- Nozzle Count
- 5
View on Amazon: Westinghouse 3200 PSI Electric Pressure Washer
This electric pressure washer provides up to 3200 PSI maximum pressure and a 1.76 GPM maximum flow rate. It features a built-in 0.61-gallon soap tank to apply detergent directly through the included soap nozzle without separate bottles. Powered by a 13-amp universal motor and an axial cam pump, it comes with five quick-connect spray tips and a 25-foot hose. It suits you if you need strong electric cleaning for cars, driveways, and decks.
Pros
- Built-in 0.61-gallon onboard soap tank
- Delivers up to 3200 PSI and 1.76 GPM max flow
- Includes 5 quick-connect nozzles including turbo and soap
- Rugged steel frame with 10-inch never-flat wheels
Cons
- Delivers 1.1 rated GPM at 2800 rated PSI
- Equipped with a universal motor rather than an induction motor
Good fit if
- You want an integrated 0.61-gallon tank for applying detergent directly.
- You need up to 3200 PSI of maximum pressure from a standard 13-amp electric outlet.
- You want multiple spray choices including a turbo nozzle and a soap tip.
Skip if
- You need a continuous rated flow rate higher than 1.1 GPM.
- You need a hose longer than the included 25-foot reach without moving the frame.
Verdict: Westinghouse 3200 PSI Electric Pressure Washer combines high electric output with an onboard 0.61-gallon soap tank for straightforward cleaning jobs. Its steel frame, maintenance-free axial cam pump, and five nozzle choices offer dependable versatility.
Westinghouse 3200 PSI Gas Pressure Washer
Best for: large outdoor cleaning jobs needing onboard soap
- Features
- Soap Tank (what this guide is about)
- Maximum Pressure
- 3200 PSI
- Flow Rate
- 2.5 GPM
- Power Source
- Gas
- Engine Displacement
- 212cc
- Hose Length
- 25 ft
This gas machine pairs a 212cc four-stroke engine with an axial cam pump to deliver 3200 PSI at 2.5 GPM. It includes a half-gallon onboard soap tank for applying detergent through the dedicated soap nozzle without carrying a separate chemical bottle. With 25 feet of hose and five quick-connect spray tips, you get steady cleaning volume suited for driveways, fences, garage floors, and exterior siding.
Pros
- Half-gallon onboard soap tank with dedicated soap nozzle
- 2.5 GPM flow rate driven by a 212cc four-stroke engine
- 12-inch never-flat wheels mounted to a steel frame
- Includes five quick-connect nozzles (0°, 15°, 25°, 40°, and soap)
Cons
- Weighs 63 pounds
- Uses manual recoil start rather than electric start
- 25-foot hose limits reach before moving the machine
Good fit if
- You need an integrated half-gallon soap tank for detergent tasks.
- You want 2.5 GPM water flow for larger surfaces like driveways and fences.
- You prefer gas power without cords restricting work areas.
Skip if
- You want a lightweight machine under 60 pounds for easier lifting.
- You prefer push-button electric starting instead of a recoil pull.
Verdict: Westinghouse 3200 PSI Gas Pressure Washer delivers 2.5 GPM flow and an integrated half-gallon detergent tank for large home chores. It is a capable gas unit if you do not mind recoil starting and a 63-pound frame.
Westinghouse 2300 PSI Compact Electric Pressure Washer
Best for: lightweight vehicle and patio washing with detergent
- Features
- Soap Tank (what this guide is about)
- Maximum Pressure
- 2300 Max PSI
- Flow Rate
- 1.76 Max GPM
- Power Source
- Electric
- Hose Length
- 25'
- Nozzle Count
- 5
View on Amazon: Westinghouse 2300 PSI Compact Electric Pressure Washer
The Westinghouse 2300 PSI Compact Electric Pressure Washer pairs a 20-ounce onboard soap tank with an electric motor rated at 1900 PSI and 1.24 GPM, reaching up to 2300 max PSI. At under 20 pounds with four 360-degree steering wheels, it offers easy maneuvering around driveways and vehicles. You get five quick-connect nozzles and a 25-foot hose, making it a practical fit for regular home and vehicle washing.
Pros
- Integrated 20-ounce onboard detergent tank
- Includes five spray tips: 0°, 15°, 25°, turbo, and soap
- Lightweight 19.8-pound frame with four 360° steering wheels
- Automatic pump stop activates when trigger is released
Cons
- Continuous rated output drops to 1900 PSI and 1.24 GPM
- 25-foot hose limits total working reach from the base unit
- 20-ounce soap reservoir requires refills on large surfaces
Good fit if
- You need an onboard soap tank for washing cars, fencing, and patio furniture.
- You want a compact machine under 20 pounds that steers on four wheels.
- You want five nozzle choices included, such as turbo and dedicated soap tips.
Skip if
- You require sustained working pressure higher than 1900 PSI.
- You need a hose longer than 25 feet out of the box.
Verdict: Westinghouse 2300 PSI Compact Electric Pressure Washer delivers versatile soap application and five nozzle options in a stable, four-wheeled design. It handles routine vehicle and deck maintenance without the bulk of larger machines.
Westinghouse 3600 PSI Gas Pressure Washer
Best for: heavy-duty cleaning tasks requiring high water flow
- Features
- Soap Tank (what this guide is about)
- Maximum Pressure
- 3600 PSI
- Flow Rate
- 2.7 GPM
- Power Source
- Gas
- Engine Displacement
- 212cc
- Hose Length
- 35 ft
This gas-powered machine delivers 3600 PSI and a 2.7 GPM flow rate using a 212cc four-stroke engine and a triplex brass head pump. You get an onboard soap tank for applying detergent, paired with a dedicated soap nozzle and a 35-foot hose. It suits you if you need heavy-duty water output and substantial cleaning power for driveways, siding, and exterior walls.
Pros
- 3600 PSI maximum pressure and 2.7 GPM flow rate
- Commercial-grade triplex brass head pump
- Onboard soap tank with dedicated soap nozzle
- 35-foot abrasion-resistant high-pressure hose
Cons
- Weighs 79 pounds
- Manual recoil start
- Requires gas engine oil and fuel upkeep
Good fit if
- You need 3600 PSI and 2.7 GPM for stripping grime from large surfaces.
- You want an integrated soap tank paired with a triplex pump.
Skip if
- You prefer a lightweight machine that weighs under 79 pounds.
- You want an electric motor that requires no gas or engine oil.
Verdict: Westinghouse 3600 PSI Gas Pressure Washer provides commercial-grade pump construction and high water volume for heavy-duty exterior jobs. It offers reliable detergent application and extended reach on large job sites.
Kärcher K1700 Electric Pressure Washer
Best for: light-duty vehicle and patio washing with soap
- Features
- Soap Tank (what this guide is about)
- Maximum Pressure
- 1700 PSI
- Flow Rate
- 1.2 GPM
- Nozzle Count
- 3
- Intended Use
- Cars, Patios, Driveways, Siding
- Color
- Yellow
The Kärcher K1700 is an electric pressure washer designed for residential cleaning tasks like vehicles, patios, and siding. It features an onboard 0.5-gallon soap tank to apply detergent without external bottles. Delivering 1700 PSI at a flow rate of 1.2 GPM, it provides basic power for everyday maintenance. At 20.7 pounds with never-flat wheels and a foot switch, you get an easily maneuverable option for home and vehicle washing.
Pros
- Onboard 0.5-gallon detergent tank for integrated soap application
- Foot switch provides hands-free power control
- Weighs 20.7 pounds with never-flat wheels for mobility
- Comes with 3 spray nozzles including 15-degree, turbo, and 65-degree
Cons
- Maximum pressure capped at 1700 PSI
- Water delivery rate limited to 1.2 GPM
Good fit if
- You need an onboard 0.5-gallon soap tank for washing cars and patio furniture.
- You prefer a lightweight 20.7-pound washer with an integrated foot switch.
- You want standard residential cleaning power rated at 1700 PSI.
Skip if
- You require pressure higher than 1700 PSI for demanding stain removal.
- You need a flow rate above 1.2 GPM for fast surface rinsing.
Verdict: Kärcher K1700 Electric Pressure Washer pairs a 0.5-gallon soap tank with 1700 PSI and 1.2 GPM output for everyday cleaning. Its 20.7-pound build and integrated foot switch offer straightforward maneuverability for basic outdoor tasks.
Kärcher K2100PS Electric Pressure Washer
Best for: Homeowners cleaning cars and patios with soap
- Features
- Soap Tank (what this guide is about)
- Maximum Pressure
- 2100 PSI
- Flow Rate
- 1.2 GPM
- Power Source
- Electric
- Intended Use
- Cars, Patios, Driveways, Siding
- Nozzle Count
- 3 Nozzles
The Kärcher K2100PS is an electric pressure washer designed for home exterior maintenance. It delivers 2100 PSI at a 1.2 GPM flow rate using an induction motor. For cleaning with soap, you get a removable 1-gallon detergent tank alongside a dedicated soap nozzle. This setup suits you if you need steady soap application for washing cars, driveways, decks, or siding without managing gas fuel or separate detergent bottles.
Pros
- Removable 1-gallon detergent tank for soap application
- Electric induction motor rated at 2100 PSI
- Includes 10-inch never-flat wheels and folding handle
- Hands-free on/off foot switch
Cons
- Water flow rate is limited to 1.2 GPM
- Unit weight is 39.7 pounds
Good fit if
- You want an onboard 1-gallon soap tank for car and surface washing.
- You prefer an electric induction motor with foot-switch operation.
- You need folding handles and 10-inch wheels for mobility and storage.
Skip if
- You need a flow rate higher than 1.2 GPM for heavy rinsing.
- You require pressure exceeding 2100 PSI for commercial tasks.
Verdict: Kärcher K2100PS Electric Pressure Washer combines a large 1-gallon detergent tank with 2100 PSI cleaning power. It provides reliable electric performance for household washing tasks.
Kärcher K1700 Cube Compact Pressure Washer
Best for: compact storage and light residential vehicle cleaning
- Features
- Soap Tank (what this guide is about)
- Maximum Pressure
- 1700 PSI
- Flow Rate
- 1.2 GPM
- Nozzle Count
- 3
- Intended Use
- Cars, Patios, Driveways, Siding
- Color
- Yellow
The Kärcher K1700 Cube is a compact electric pressure washer rated at 1700 PSI and 1.2 GPM. For soap applications, it includes a 0.3-gallon detachable detergent tank paired with a 65° detergent nozzle. At 15.5 pounds and 11.5 inches tall, you can store or carry it easily. It suits you if you need a lightweight, portable cleaner for cars, patios, and siding without large equipment taking up space.
Pros
- Detachable 0.3-gallon onboard detergent tank
- Includes three spray nozzles: 15°, turbo, and 65° detergent
- Weighs 15.5 pounds with integrated foot-switch control
Cons
- Output limited to 1700 PSI and 1.2 GPM
- 0.3-gallon soap tank capacity requires frequent refills on larger jobs
Good fit if
- You want a compact 15.5-pound pressure washer that is easy to store.
- You need a dedicated 0.3-gallon detergent tank for vehicle or patio cleaning.
Skip if
- You require more than 1700 PSI for stripping tough surfaces.
- You want a high-flow machine exceeding 1.2 GPM for faster rinsing.
Verdict: Kärcher K1700 Cube Electric Pressure Washer delivers dedicated detergent application in a portable 15.5-pound build. Its 1700 PSI rating and 0.3-gallon soap tank fit routine residential washing in tight storage spaces.
Ezasin 3500 PSI Gas Pressure Washer
Best for: heavy-duty gas washing with onboard soap
- Features
- Soap Tank (what this guide is about)
- Maximum Pressure
- 3500 PSI
- Flow Rate
- 2.3 GPM
- Power Source
- Gas
- Engine Displacement
- 212cc
- Hose Length
- 25 ft
The Ezasin 3500 PSI Gas Pressure Washer pairs a 212cc 7HP 4-stroke engine with an axial cam pump to deliver 3500 PSI at 2.3 GPM. You get an onboard soap tank for applying detergent alongside four quick-connect nozzles (0°, 25°, 40°, and soap). It rolls on 10-inch tires with a 25-foot hose and front rubber pads, making it a heavy-duty option if you need standalone gas cleaning power for siding and driveways.
Pros
- 212cc 7HP 4-stroke engine generating 3500 PSI and 2.3 GPM
- Integrated soap tank with quick-connect soap nozzle
- 10-inch tires and dual front rubber stabilizing pads
- Axial cam pump and 25-foot high-pressure hose
Cons
- Heavy overall build at 63 pounds
- Recoil pull start requires manual effort
- Includes four nozzles but omits a 15-degree tip
Good fit if
- You need 3500 PSI and 2.3 GPM from a standalone 212cc gas engine.
- You want an onboard soap tank for cleaning siding and vehicles.
- You value 10-inch tires for rolling across yards and gardens.
Skip if
- You prefer a lightweight electric pressure washer instead of a 63-pound gas unit.
- You want push-button starting rather than a manual recoil cord.
Verdict: Ezasin 3500 PSI Gas Pressure Washer delivers 3500 PSI and 2.3 GPM flow using a 212cc engine and built-in soap tank. It gives you high-output gas cleaning power for siding and driveways without power-cord limits.
BILT HARD 3200 PSI Electric Pressure Washer
Best for: High-capacity soap spraying on residential surfaces
- Features
- Soap Tank (what this guide is about)
- Maximum Pressure
- 3200 PSI
- Flow Rate
- 1.7 GPM
- Power Source
- Electric
- Hose Length
- 25 ft
- Nozzle Count
- 5
This corded electric machine delivers 3200 PSI at 1.7 GPM, driven by a 14-amp copper induction motor. For detergent cleaning, you get a dedicated 1.05-gallon onboard soap tank that reduces refilling stops on large projects. A 35-foot power cord and 25-foot hose give you 60 feet of reach from an outlet. It suits you if you want high electric output paired with high soap capacity for driveways and home exteriors.
Pros
- Large 1.05-gallon onboard detergent tank
- 3200 PSI and 1.7 GPM flow rating
- 14-amp pure copper induction motor
- Includes five quick-connect nozzles plus a turbo nozzle
- 35-foot GFCI power cord and 9-inch wheels
Cons
- Heavy total weight at 52.2 pounds
- 25-foot hose requires moving the cart on wider jobs
Good fit if
- You need a large 1.05-gallon soap reservoir for continuous detergent application.
- You prefer an electric induction motor over a maintenance-heavy gas engine.
- You want a turbo nozzle included alongside standard quick-connect tips.
Skip if
- You need a lightweight pressure washer that weighs under 50 pounds.
- You require water flow higher than 1.7 GPM for fast surface flushing.
Verdict: BILT HARD 3200 PSI Electric Pressure Washer pairs a generous 1.05-gallon soap reservoir with high electric pressure and an induction motor. It provides heavy-duty residential cleaning without gas maintenance, though the 52.2-pound frame requires more effort to lift.
Imdot 5000 PSI Adjustable Electric Pressure Washer
Best for: adjustable pressure car and driveway washing
- Features
- Soap Tank (what this guide is about)
- Maximum Pressure
- 5000 PSI
- Power Source
- Electric
- Hose Length
- 23 ft
- Nozzle Count
- 4
- Intended Use
- Cars
View on Amazon: Imdot 5000 PSI Adjustable Electric Pressure Washer
This Imdot machine is an electric pressure washer equipped with an onboard detergent tank for applying soap. You get an adjustable output ranging from 2500 PSI to 5000 PSI, controlled to match tasks from car washing to surface cleaning. The unit includes a 23-foot pressure hose and four spray nozzles. Weighing 16 pounds, it suits you if you need variable high pressure and soap application in a compact, portable frame.
Pros
- Adjustable pressure range from 2500 PSI to 5000 PSI
- Onboard detergent tank for soap application
- Lightweight 16-pound compact frame
- Includes four spray nozzles and a 23-foot hose
Cons
- 23-foot pressure hose provides limited reach without moving the unit
- Water flow rate (GPM) is not specified in the data
Good fit if
- You want variable pressure settings between 2500 PSI and 5000 PSI for cars and driveways.
- You prefer a lightweight 16-pound electric washer with a built-in soap tank.
Skip if
- You need a hose longer than 23 feet without moving the base.
- You require a confirmed GPM specification before purchasing.
Verdict: Imdot 5000 PSI Adjustable Electric Pressure Washer pairs a broad pressure range with an onboard detergent tank in a 16-pound chassis. It delivers adjustable output and integrated soap distribution for outdoor cleaning tasks.
Imdot 5000 PSI Electric Pressure Washer
Best for: electric washing with integrated hose reel storage
- Features
- Soap Tank, Hose Reel (what this guide is about)
- Maximum Pressure
- 5000 PSI
- Flow Rate
- 4.0 GPM
- Power Source
- Electric
- Hose Length
- 23 ft
- Nozzle Count
- 4
This electric pressure washer delivers up to 5000 PSI and a 4.0 GPM flow rate with adjustable output down to 2500 PSI. It includes an onboard detergent tank for applying soap and a built-in hose reel to store the 23-foot hose. At 16 pounds, the compact frame suits you if you want high output ratings paired with integrated hose storage for vehicle and surface cleaning.
Pros
- Integrated hose reel and onboard detergent tank
- Adjustable pressure range from 2500 PSI to 5000 PSI
- High rated flow rate of 4.0 GPM
- Lightweight 16-pound frame
Cons
- 23-foot hose is shorter than typical 25- or 30-foot hoses
- Package includes 4 nozzles instead of a full 5-piece set
Good fit if
- You want an electric pressure washer with a built-in hose reel and soap tank.
- You need adjustable pressure settings between 2500 PSI and 5000 PSI.
- You prefer a lightweight 16-pound machine for easy transport.
Skip if
- You need a hose longer than 23 feet without buying an extension.
- You require a standard 5-nozzle kit for varied spray angles.
Verdict: Imdot 5000 PSI Electric Pressure Washer pairs high maximum pressure ratings with an onboard hose reel and soap tank for organized, compact cleaning.
Genkins 3200 PSI Gas Pressure Washer with Foldable Frame
Best for: compact gas power with onboard soap storage
- Features
- Soap Tank (what this guide is about)
- Maximum Pressure
- 3200 PSI
- Flow Rate
- 2.5 GPM
- Power Source
- Gas
- Engine Displacement
- 212cc
- Hose Length
- 27 ft.
View on Amazon: Genkins 3200 PSI Gas Pressure Washer with Foldable Frame
This gas machine pairs a 212cc OHV engine with an axial cam pump to deliver 3200 PSI at a flow rate of 2.5 GPM. You get an integrated 0.5-gallon detergent tank for applying soap directly without extra containers, along with five quick-connect nozzles and a 27-foot hose. It suits you if you need portable gas cleaning power with a folding frame for compact storage in your garage or shed.
Pros
- Built-in 0.5-gallon detergent tank
- 3200 PSI and 2.5 GPM output from a 212cc engine
- Five quick-change nozzles covering 0° to 40° plus soap
- Foldable handle with 9.5-inch flat-free wheels
- Low oil automatic shutoff mechanism
Cons
- Weighs 60 pounds
- 27-foot hose provides less reach than 30-foot hoses
Good fit if
- You want an onboard 0.5-gallon detergent tank on a gas machine.
- You need 3200 PSI and 2.5 GPM for heavy-duty outdoor cleaning.
- You have limited storage space and need a folding handle.
Skip if
- You prefer an electric machine that eliminates gas and oil upkeep.
- You need a hose longer than 27 feet without buying extensions.
Verdict: Genkins 3200 PSI Foldable Gas Pressure Washer combines a 212cc engine with an onboard 0.5-gallon soap tank and a folding frame. It gives you 3200 PSI of cleaning force and 2.5 GPM without needing separate detergent containers.
Imdot 4200 PSI Gas Pressure Washer
Best for: high-flow heavy-duty outdoor cleaning
- Features
- Soap Tank (what this guide is about)
- Maximum Pressure
- 4200 PSI
- Flow Rate
- 4.0 GPM
- Engine Displacement
- 212cc
- Hose Length
- 25 ft
- Nozzle Count
- 5
The Imdot 4200 PSI Gas Pressure Washer gives you heavy cleaning output driven by a 212cc 4-stroke engine and an axial cam pump. It produces up to 4200 PSI and 4.0 GPM for stripping grime with water and detergent. The setup includes an integrated soap tank, five quick-connect nozzles, and a 25-foot hose on a steel cart with 10-inch wheels. It suits you if you need maximum pressure for large exterior surfaces.
Pros
- Delivers 4200 PSI and 4.0 GPM output
- 212cc 4-stroke OHV engine with axial cam pump
- Includes 5 quick-connect nozzles including dedicated soap tip
- Rugged steel frame with 10-inch flat-free wheels
Cons
- 25-foot hose limits reach without moving the cart
- Recoil start requires manual pulling
- 0.5-gallon fuel tank requires periodic refilling during extended runs
Good fit if
- You need 4200 PSI and 4.0 GPM to clear heavy residue off concrete and siding.
- You want a gas-powered unit with flat-free wheels for working away from electrical outlets.
- You plan to apply soap through dedicated quick-connect spray tips.
Skip if
- You prefer an electric motor with push-button starting and zero engine maintenance.
- You need a hose longer than 25 feet out of the box.
- You want a compact machine weighing less than 60 pounds.
Verdict: Imdot 4200 PSI Gas Pressure Washer delivers top-tier 4200 PSI force and 4.0 GPM flow for heavy-duty exterior jobs. It pairs a 212cc engine with an onboard soap system, making it an effective choice when standard residential washers lack sufficient power.
Ezasin 3500 PSI Gas Pressure Washer
Best for: gas-powered outdoor washing with dedicated soap application
- Features
- Soap Tank (what this guide is about)
- Maximum Pressure
- 3500 PSI
- Flow Rate
- 2.3 GPM
- Power Source
- Gas
- Engine Displacement
- 209 cc
- Hose Length
- 25 ft
The Ezasin 3500 PSI Gas Pressure Washer pairs a 209 cc 7HP gas engine with an axial cam pump to deliver up to 3500 PSI at 2.3 GPM. You get four quick-connect nozzles, including a dedicated soap mode designed for detergent application on driveways, siding, and vehicles. Its 10-inch wheels and 25-foot hose suit you if you need independent gas power across large outdoor spaces without power cords.
Pros
- 3500 PSI output and 2.3 GPM water flow rate
- Four quick-connect nozzles including a dedicated soap tip
- 209 cc 4-stroke engine with recoil start and axial cam pump
- Large 10-inch wheels with front anti-vibration support pads
Cons
- Lacks a 15-degree spray nozzle in the included set
- 25-foot hose limits working radius without repositioning the cart
- Requires regular gasoline and 10W-30 engine oil maintenance
Good fit if
- You need 3500 PSI cleaning force for tough outdoor surface preparation.
- You want dedicated low-pressure soap dispensing for vehicle and patio washing.
- You need to clean away from electrical outlets using gas power.
Skip if
- You prefer the plug-in simplicity and zero engine upkeep of electric washers.
- You need an included 15-degree nozzle tip for your regular cleaning routine.
Verdict: Ezasin 3500 PSI Gas Pressure Washer delivers dependable gas-powered cleaning force and dedicated soap dispensing for large outdoor maintenance projects.
Mutaomay 3500 PSI 209cc Gas Pressure Washer
Best for: gas-powered outdoor soap application and heavy cleaning
- Features
- Soap Tank (what this guide is about)
- Maximum Pressure
- 3500 PSI
- Flow Rate
- 2.3 GPM
- Power Source
- Gas
- Engine Displacement
- 209 cc
- Hose Length
- 25 ft
The Mutaomay 3500 PSI Gas Pressure Washer combines a 209cc OHV engine with an onboard 0.26-gallon detergent tank. Delivering 3500 PSI at 2.3 GPM, it supplies strong rinsing force alongside chemical application via a dedicated soap nozzle. A 25-foot hose and 10-inch wheels give you mobility around driveways, patios, and siding. It suits you if you need sustained outdoor cleaning power without relying on electric extension cords.
Pros
- 0.26-gallon external soap tank paired with a dedicated soap nozzle
- 3500 PSI maximum pressure and 2.3 GPM flow rate
- 209cc OHV 4-stroke engine with 0.8-gallon fuel tank for up to 2.5 hours runtime
- 10-inch wheels and low-profile steel frame for transport over rough ground
Cons
- Includes 4 spray nozzles with no 15-degree tip provided
- 25-foot hose limits your cleaning radius before wheeling the cart
Good fit if
- You need gas-driven cleaning with a dedicated soap tank for outdoor jobs.
- You want 3500 PSI and 2.3 GPM to wash driveways, patios, and siding.
- You prefer long runtime between refuels using an 0.8-gallon gas tank.
Skip if
- You want an electric pressure washer that starts with a switch.
- You need a 5-nozzle package that includes a 15-degree tip.
Verdict: Mutaomay 3500 PSI Gas Pressure Washer delivers dependable gas cleaning output with 3500 PSI, 2.3 GPM, and a 0.26-gallon detergent tank for outdoor chores.
Specifications side by side
| Spec | Westinghouse 3200 PSI Electric Pressure Washer | Westinghouse 3200 PSI Gas Pressure Washer | Westinghouse 2300 PSI Compact Electric Pressure Washer | Westinghouse 3600 PSI Gas Pressure Washer | Kärcher K1700 Electric Pressure Washer | Kärcher K2100PS Electric Pressure Washer | Kärcher K1700 Cube Compact Pressure Washer | Ezasin 3500 PSI Gas Pressure Washer | BILT HARD 3200 PSI Electric Pressure Washer | Imdot 5000 PSI Adjustable Electric Pressure Washer | Imdot 5000 PSI Electric Pressure Washer | Genkins 3200 PSI Gas Pressure Washer with Foldable Frame | Imdot 4200 PSI Gas Pressure Washer | Ezasin 3500 PSI Gas Pressure Washer | Mutaomay 3500 PSI 209cc Gas Pressure Washer |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum Pressure | 3200 Max PSI | 3200 PSI | 2300 Max PSI | 3600 PSI | 1700 PSI | 2100 PSI | 1700 PSI | 3500 PSI | 3200 PSI | 5000 PSI | 5000 PSI | 3200 PSI | 4200 PSI | 3500 PSI | 3500 PSI |
| Flow Rate | 1.76 Max GPM | 2.5 GPM | 1.76 Max GPM | 2.7 GPM | 1.2 GPM | 1.2 GPM | 1.2 GPM | 2.3 GPM | 1.7 GPM | not specified | 4.0 GPM | 2.5 GPM | 4.0 GPM | 2.3 GPM | 2.3 GPM |
| Power Source | Electric | Gas | Electric | Gas | not specified | Electric | not specified | Gas | Electric | Electric | Electric | Gas | not specified | Gas | Gas |
| Engine Displacement | not specified | 212cc | not specified | 212cc | not specified | not specified | not specified | 212cc | not specified | not specified | not specified | 212cc | 212cc | 209 cc | 209 cc |
| Hose Length | 25’ | 25 ft | 25' | 35 ft | not specified | not specified | not specified | 25 ft | 25 ft | 23 ft | 23 ft | 27 ft. | 25 ft | 25 ft | 25 ft |
| Nozzle Count | 5 | 5 | 5 | 5 | 3 | not specified | 3 | 4 | 5 | 4 | 4 | 5 | 5 | 4 | 4 |
| Pump Type | axial cam | Axial cam | not specified | Triplex | not specified | not specified | not specified | Axial cam | not specified | not specified | not specified | Axial cam | Axial cam | Axial cam | Axial |
| Pressure | 3200 PSI | 3200 PSI | 2300 PSI | 3600 PSI | not specified | not specified | not specified | 3500 PSI | 3200 PSI | 5000 PSI | 5000 PSI | 3200 PSI | 4200 PSI | 3500 PSI | 3500 PSI |
| Intended Use | Cars, Patios, Homes, Driveways, Fences, Furniture | Cars, Patios, Homes, Driveways, Fences, Furniture | Cars, Patios, Homes, Driveways, Fences | Cars, Patios, Homes, Driveways, Fences, Furniture | Cars, Patios, Driveways, Siding | Cars, Patios, Driveways, Siding | Cars, Patios, Driveways, Siding | not specified | Cars, Homes, Driveways | Cars | Cars | not specified | not specified | not specified | Cars, Patios, Driveways, Siding |
| Features | Soap Tank | Soap Tank | Soap Tank | Soap Tank | Soap Tank | Soap Tank | Soap Tank | Soap Tank | Soap Tank | Soap Tank | Soap Tank, Hose Reel | Soap Tank | Soap Tank | Soap Tank | Soap Tank |
| Color | Black | Blue/Black | Black | Black | Yellow | Yellow | Yellow | Blue | Blue | Blue | Green | Black | Black | Dark | Dark Black |
| Dimensions | 19 × 18.5 × 37.5 inches | 21 × 19.5 × 39 inches | 14 × 13.5 × 16.5 inches | 34 × 21 × 28 inches | 17.3 × 16.5 × 33 inches | 18.6 × 19 × 35.5 inches | 16 × 13 × 11.5 inches | 21.5 × 23.5 × 39.5 inches | 1 × 1 × 1 inches | 12 × 11 × 18 inches | 11 × 10 × 22 inches | 19.7 × 18.5 × 20 inches | 23 × 17 × 22 inches | not specified | 17.5 × 22.5 × 34.5 inches |
| Weight | 33.1 pounds | 63 pounds | 19.8 pounds | 79 pounds | 20.7 pounds | 39.7 pounds | 15.5 pounds | 63 pounds | 52.2 pounds | 16 pounds | 16 pounds | 60 pounds | 60 pounds | not specified | 48 pounds |
| Size | 3200 Max PSI | 3200 PSI and 2.5 GPM, Soap Tank and Five Nozzle Set | 2300 Max PSI | not specified | K1700 | K2100PS | K1700 Cube | 3500 PSI | 3200 PSI | not specified | not specified | not specified | not specified | not specified | not specified |
| Model | WPX3200e | WPX3200 | ePX3100 | WPX3600 | 1.106-109.0 | 1.106-220.0 | 1.106-113.0 | EAPW01 | THA-0362 | HX07 | HX07 | GPW3200 | YGA36 | not specified | 3500PSI EDPW07 |
Is an onboard soap tank worth it?
An integrated detergent reservoir lets you apply cleaner directly without external siphon hoses or mixing buckets. Capacities range from 0.26 gallons on the Mutaomay 3500 PSI to 1.05 gallons on the BILT HARD 3200 PSI. Larger tanks support longer cleaning sessions before refilling. This feature keeps your workflow organized by storing soap on the unit itself. It is useful for tasks requiring dedicated detergent application on siding or driveways.
Worth it if
- You want to avoid dragging separate siphon hoses or mixing buckets
- You need onboard storage for detergent during extended cleaning sessions
- You prefer a streamlined setup for routine vehicle or patio washing
Skip it if
- You only use plain water for rinsing and never apply soap
- You prefer using a separate garden sprayer for detergent application
- You prioritize minimal weight and do not need onboard chemical storage
If you need cleaning gear for your home, check our guide to the best dishwashers with water tank.
How We Picked These Picks
We identified pressure washers with soap tanks by scanning Amazon listings for that specific feature in the title or bullet points. We only selected one size or variant from each product family to keep the list clear. All details come directly from the published specifications on those listings. We did not physically handle any units or test them ourselves. Every spec mentioned here is taken straight from the manufacturer data provided in the product files.
We ordered the results by availability first. Next, we sorted by the listing’s overall rating, weighted by the number of ratings. Finally, we ranked them by how many of our criteria the specs met. This method ensures you see the most relevant models first. You get a list based strictly on published data and availability, not personal opinion or external testing.
How to Choose the Right One
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Match Power Source
Electric units like the Westinghouse WPX3200e offer quiet operation and zero emissions, making them ideal for enclosed spaces or frequent residential use. Gas models such as the Westinghouse WPX3200 provide 2.5 GPM flow and higher mobility without cords. Choose gas for large driveways or decks where power cord length limits reach. Electric options are lighter and require less maintenance, while gas engines deliver consistent performance for heavy-duty tasks.
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Check PSI Rating
Pressure determines cleaning intensity. The Imdot 5000 PSI Adjustable Electric Pressure Washer delivers maximum force for stubborn grime on concrete. Lower ratings like the Kärcher K1700 at 1700 PSI suffice for cars and patio furniture. Higher PSI does not always mean better cleaning; flow rate matters too. Select a machine that matches your surface hardness. Delicate wood siding requires lower pressure to avoid damage, while concrete benefits from higher output.
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Evaluate Flow Rate
Gallons per minute (GPM) affects how quickly soap and dirt rinse away. The Imdot 4200 PSI Gas Pressure Washer offers 4.0 GPM, speeding up large jobs significantly. The Kärcher K1700 Cube provides 1.2 GPM, suitable for smaller areas. Higher flow rates consume detergent faster, so ensure your tank capacity supports the usage. Balance PSI and GPM for optimal cleaning efficiency. A higher combined cleaning unit score often indicates better performance on tough stains.
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Assess Soap Tank Size
Tank capacity dictates how often you refill detergent. The BILT HARD 3200 PSI Electric Pressure Washer includes a 1.05-gallon reservoir, reducing interruptions during large projects. The Mutaomay 3500 PSI has a smaller 0.26-gallon tank, requiring more frequent refills. Larger tanks suit extensive washing tasks like siding or driveways. Smaller tanks keep the machine lighter and more compact for storage. Consider your typical job size when selecting tank volume to ensure uninterrupted cleaning sessions.
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Consider Weight and Size
Portability matters for storage and maneuverability. The Kärcher K1700 Cube weighs only 15.5 pounds and fits in tight spaces. The Westinghouse WPX3600 gas model weighs 79 pounds, offering stability but requiring more effort to move. Electric units are generally lighter than gas counterparts. Check dimensions to ensure the washer fits your garage or shed. A wheeled design, like the Westinghouse ePX3100, aids mobility regardless of weight, making heavy machines easier to position.
Frequently asked questions
Which pressure washer with a soap tank is best for general home use?
The Westinghouse 3200 PSI Electric Pressure Washer is the top pick for all-around cleaning. It features an onboard 0.61-gallon soap tank and delivers 3200 PSI of pressure. The unit weighs 33.1 pounds and includes five nozzle choices. This combination offers dependable versatility for patios and driveways without the bulk of gas models.
Do I need a gas or electric pressure washer for soap application?
Both power sources offer integrated detergent tanks. Electric options like the Westinghouse WPX3200e provide 3200 PSI with a 0.61-gallon tank. Gas models such as the Westinghouse WPX3200 deliver higher flow rates at 2.5 GPM with a half-gallon tank. Choose electric for lighter tasks and gas for heavy-duty exterior jobs requiring more water volume.
What is the largest soap tank capacity available in these models?
The BILT HARD 3200 PSI Electric Pressure Washer has the largest reservoir at 1.05 gallons. The Kärcher K2100PS follows with a 1-gallon tank. These larger capacities support extended cleaning sessions on driveways and siding. Smaller units like the Kärcher K1700 Cube hold only 0.3 gallons for lighter residential tasks.
Which model is best for cleaning cars and patios?
The Kärcher K1700 Electric Pressure Washer is ideal for light-duty vehicle and patio washing. It pairs a 0.5-gallon soap tank with 1700 PSI and 1.2 GPM output. Weighing just 20.7 pounds, it offers straightforward maneuverability. The Kärcher K2100PS is another strong option with a larger 1-gallon tank for more frequent household washing.
Are there portable pressure washers with built-in detergent tanks?
Yes, the Kärcher K1700 Cube is a compact choice weighing 15.5 pounds. It includes a 0.3-gallon soap tank and 1700 PSI rating. The Westinghouse 2300 PSI Compact Electric Pressure Washer is also lightweight at 19.8 pounds with a soap tank. These units fit routine residential washing and tight storage spaces.
Which pressure washer offers the highest flow rate with soap tank?
The Imdot 5000 PSI Electric Pressure Washer with hose reel provides 4.0 GPM flow. The Imdot 4200 PSI Gas Pressure Washer also delivers 4.0 GPM. These high-flow models apply detergent quickly over large areas. The Westinghouse 3600 PSI Gas model is another heavy-duty option for commercial-grade exterior jobs requiring high water volume.
Can I fold up a gas pressure washer with a soap tank?
The Genkins 3200 PSI Gas Pressure Washer features a foldable frame for compact storage. It includes an onboard 0.5-gallon soap tank and a 212cc engine. This design allows you to store the unit vertically or in smaller spaces while retaining full cleaning power. It delivers 3200 PSI and 2.5 GPM for various outdoor chores.
What is the lightest electric pressure washer with a soap tank?
The Imdot 5000 PSI Adjustable Electric Pressure Washer is the lightest at 16 pounds. It includes an onboard detergent tank and 5000 PSI output. The Kärcher K1700 Cube is also very light at 15.5 pounds with a 0.3-gallon tank. These lightweight electric units are easy to move for car and patio cleaning.