This hot water and steam pressure washer features adjustable temperature for the water. Telescoping wands can be used with this unit provided the temperature of the water is less than the max temperature the wand is rated for. Click the links below to view telescoping wand options.
NorthStar Gas Wet Steam and Hot Water Pressure Washer, Honda GX390 Engine, Electric Start, 3000 PSI, 4 GPM

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Shipping:
Free shipping (lower 48 states) - Available now
$19.99 Same DayHeavy/large item. Lift gate service available.
Store Pickup:
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- Hot Water and Wet Steam Cleaning: Produces both heated high-pressure water spray and wet steam for removing grease, oil and stubborn buildup
- Up to 250°F Wet Steam Output: Delivers high-temperature cleaning performance for breaking down grease, oil and stubborn contaminants
- 4 GPM Flow Rate: Provides increased water volume for faster cleaning of vehicles, equipment, concrete and large surfaces
- Honda GX390 Gas Engine: Supplies dependable power and reliable operation for heavy-duty outdoor cleaning applications
- CAT 67DX39G1 Commercial Pump: Features a heavy-duty CAT pump engineered for long service life and professional durability
Prop 65 Warning: See Details
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Description
Key Specs
Reviews
Q & A
Accessories
Warranty
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Product Summary
What's Included
- (1) NorthStar Gas Wet Steam and Hot Water Pressure Washer with Honda GX390 OHV Engine (1) Quick-connect industrial rear entry gun (1) 36in. lance with nozzle quick connector (1) 50ft. gray nonmarking quick-connect hose (5) Quick-connect nozzles (0°, 15°, 25°, 40°, detergent) (1) Quick-connect steam nozzle (1) Detergent injector
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ROBUST AND LONG-LASTING
Built with heavy-duty materials including a Schedule 80 pipe and brass manifold, this machine is designed to WITHSTAND CHALLENGING CONDITIONS and frequent use
UNPARALLELED CLEANING POWER
Combining hot water and steam capabilities, this pressure washer cuts through grease, grime and dirt at an impressive 3,000 PSI, PERFECT FOR THE TOUGHEST JOBS
ENGINEERED FOR RELIABILITY
The HONDA GX390 ENGINE provides a foundation of reliable and quiet operation, complemented by an ELECTRIC START for immediate action
PRECISE HEAT AND PRESSURE
Featuring an advanced combustion chamber for efficient heat management, along with ADJUSTABLE PRESSURE SETTINGS for versatile cleaning tasks
VERSATILE FUEL OPTIONS
The DUAL FUEL TANK DESIGN and 12V DC burner allow for extended run times and flexible fuel usage, ensuring uninterrupted operation on any site
Features + Benefits

- Hot Water and Wet Steam Cleaning: Produces both heated high-pressure water spray and wet steam for removing grease, oil and stubborn buildup
- Up to 250°F Wet Steam Output: Delivers high-temperature cleaning performance for breaking down grease, oil and stubborn contaminants
- 4 GPM Flow Rate: Provides increased water volume for faster cleaning of vehicles, equipment, concrete and large surfaces
- Honda GX390 Gas Engine: Supplies dependable power and reliable operation for heavy-duty outdoor cleaning applications
- CAT 67DX39G1 Commercial Pump: Features a heavy-duty CAT pump engineered for long service life and professional durability
- Dual Fuel Tank System: Separate gasoline engine and burner fuel tanks support independent pump operation and hot water heating performance
- Kerosene/Diesel/Fuel Oil Burner System: Burner supports kerosene, diesel or fuel oil for heated cleaning performance
- Adjustable Chemical Injection System: Downstream injector applies detergent up to a 13:1 water-to-chemical ratio while protecting the pump from chemical exposure
- Fuel/Water Separator System: Integrated burner fuel filter and water separator help protect burner performance and reliability
- Integrated Safety and Protection Systems: Includes thermal protector, rupture disc protection and flow switch controls for dependable operation
- Heavy-Duty Portable Design: Built for outdoor commercial use with durable frame construction and turf tires for easier transport across jobsites
- Professional-Grade Accessories Included: Comes equipped with a 50ft. quick-connect high-pressure hose, spray gun, 18.5in. lance and 6 quick-connect nozzles (0°, 15°, 25°, 40°, steam and detergent)
Key Specs
| Attribute | Specification |
|---|---|
item# | 157310 |
Brand | NorthStar |
Manufacturer's Warranty | 24 months parts/24months labor |
Ship Weight | 600.0 LB |
Pressure | 3,000 PSI |
Flow | 4 GPM |
Engine Model | GX390 |
Engine Displacement | 389 cc |
Fuel Type | Gasoline |
Pump | CAT 66dx |
Drive Style | Direct |
Number of Tips Included | 6 |
Adjustable Pressure | Yes |
Gross Torque | 18.5 ft-lbs. |
Start Type | Electric |
Engine Oil Included | No |
Engine Oil Type | SAE 30 Motor Oil |
| Attribute | Specification |
|---|---|
Fuel Capacity | 8.75 Gal |
Max. Inlet Water Temp | 140 °F |
Max. Outlet Water Temp | 250 °F |
Orifice Size | 4.5 |
Chemical Injector | Yes |
Hose Length | 50 ft |
Coupler Size | 3/8 in |
Wheel Diameter | 14 in |
Nozzle Type | 0°, 15°, 25°, 40°, Steam and Soap |
Quick Connect Nozzle | Yes |
Pump Oil Included | Yes |
Pump Oil Type | SAE 30 Nondetergent |
Low Oil Shutdown | Yes |
Thermal Protector | Yes |
Product Weight | 600.0000 lb |
Dimensions L x W x H (in.) | 64.0 x 33.0 x 42.5 in |
Reviews
Questions & Answers
Questions
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· 14 years ago
Can the telescoping pressure wand be used with a hot water pressure washer?
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NorthstarExpert11· 14 years ago
Helpful?
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EJMLAWN· 14 years ago
Yes they can I have the 30ft telescoping wand that I use pretty often with my northstar hot water unit with 3000psi / 4gpm, If you look at the telescoping wand in small print it says it can handle 200degree water. Just make sure you keep a good supply of O-rings since the hot water makes them blow out much faster.
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rednecks· 14 years ago
it all depends on the type of wand and what the heat rating is
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· 15 years ago
If I hooked this unit in a van with a water tank , would I need too add a water pump too feed this pressure washer ?
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NorthStarExperts· 14 years ago
The NorthStar Gas Powered Wet Steam & Hot Water Pressure Washer requires a constant input of 5 GPM to work properly. A gravity feed system from a tank may work, as long as it is a constant input, but it may require a water pump. This item is designed for outdoor use only. We do not recommend mounting in a van because proper ventilation for the engine and burner are required.
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KGO15· 15 years ago
Yes, Because it takes a minimum of 4 gpm at the inlet to activate the flow switch properly.
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MJantz· 15 years ago
The book that comes with it does say that you can not hook it directly up to a tank. You would need a pump to supply I think it was a minimum of 6GPM.
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· 7 years ago
Is this considered a Commerical or Residential unit?
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Dinner1· 7 years ago
Commercial
Helpful?
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NorthstarExpert11· 7 years ago
This pressure washer is approved for both commercial and residential use. For both commercial and residential applications, it has a 2 year warranty (when following the proper/necessary maintenance as outlined in the owner's manual) on the pressure washer and a 3 year warranty on the Honda engine.
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· 9 years ago
is the battery required or can u pull start and run without?
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CommercialWash1· 8 years ago
The battery is required for burner to work.
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NorthstarExpert12· 9 years ago
This pressure washer has a recoil on the engine, so you can pull start it without a battery instead of using the electric start. However, a battery is required to power the burner system.
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· 11 years ago
Who is the manufacturer of the burner unit?
Where can replacement burner parts be purchased?
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BigR85· 9 years ago
It is a 12V Beckett Burner.
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productexpert6· 11 years ago
The manufacturer of the burner is Beckett. Parts for the burner can be purchased from the Northstar parts department at 1-800-270-0810.
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· 11 years ago
replacement tips
what type of replacement tips do I need for this washer?
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BigR85· 9 years ago
Orifice size 4.5 Nozzles are the ones that work for this unit.
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NorthstarExpert13· 11 years ago
Listed below are the nozzles this pressure washer originally comes with.
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· 12 years ago
What is the highest temperature this machine can maintain all day using cold water?
I have heard these machines can not maintain a 250 degree temperature using cold water. is this true?
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tqueen· 12 years ago
It maintained the 250 degree temerature for the 2-1/2 hours of use I witnessed.
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NorthstarExpert12· 12 years ago
The maximum inlet water temperature that the NorthStar Pressure Washer will accept is 140 degree water. The burner will heat the water to a maximum of 250 degrees.
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· 12 years ago
what is the best fuel to use with the heater? or what is the difference between the fuel types?
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BigR85· 9 years ago
I am a HVAC professional that works on oil furnaces that run the same burner this washer uses and you will get much better service out of kerosene then the other fuels. It is more refined and will keep things cleaner and not require as much servicing.
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NorthstarExpert11· 12 years ago
This wet steam and pressure washer features a heater/steamer that can be run off diesel, kerosene, or #1/#2 fuel oil. All these fuel types will give the same results(run time, etc.); one fuel type doesn't outperform the others.
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· 13 years ago
can this be used without using the water heater?
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Yakyakface· 12 years ago
Yes, you don't need the hot water heater on.
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NorthstarExpert11· 13 years ago
This pressure washer can be used as a cold water unit. The burner/heater is only turned on for hot water or steam pressure washing.
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· 13 years ago
On this pressure washer where do the chemicals get injected and do you have any pictures of the connections
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BigR85· 9 years ago
It comes with chemical injector that goes inline on the output side of the line right as the line comes out of the water heater.
Helpful?
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NorthstarExpert12· 13 years ago
The NorthStar Pressure Washer is equipped with a chemical injector which will siphon the chemicals into a low-pressure washer spray downstream of the pump. A picture of the connections for the chemical injector are shown on page 24 of the product manual shown on our website.
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Warranty
Manufacturer's Warranty
24 months parts/24months labor
Extend Your Warranty Coverage with a Northern Protection Plan (NPP)
Repair Plan — 1 Year
A Northern Protection Plan is available after adding the product to your shopping cart.
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Item # 157310
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$19.99 Same DayHeavy/large item. Lift gate service available.
Store Pickup:
4 in stock at Fredericksburg VA - Pickup in under 1 hr
Item # 157598
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Specifications
3,000 PSI
4,000 PSI
3,500 PSI
3,000 PSI
4 GPM
7 GPM
3.5 GPM
4 GPM
GX390
Command Pro V-twin
GX390
E420
389 cc
725 cc
389 cc
420 cc
Gasoline
Gasoline
Gasoline
Gasoline
CAT 66dx
Northstar
CAT 66dx
CAT 66dx
Direct
Belt
Direct
Direct
6
-
5
5
Yes
Yes
Yes
Yes
18.5 ft-lbs.
38.4 ft-lbs.
19.5 ft-lbs.
19.5 ft-lbs.
Electric
-
Electric and Recoil
Recoil
No
No
No
No
SAE 30 Motor Oil
SAE 30 Motor Oil
SAE 30
SAE 30 Motor Oil
8.75 Gal
15 Gal
8 Gal
1.61 Gal
140 °F
140 °F
140 °F
140 °F
250 °F
200 °F
250 °F
250 °F
4.5
3.5
4
4.5
Yes
Yes
Yes
Yes
50 ft
50 ft
50 ft
50 ft
3/8 in
3/8 in
3/8 in
3/8 in
14 in
-
-
15 in
0°, 15°, 25°, 40°, Steam and Soap
0°, 15°, 25°, 40° and Soap
15° Wet Steam, 15°, 25°, 40°, and Chemical
15° Wet Steam, 15°, 25°, 40°, and Chemical
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
SAE 30 Nondetergent
Universal Tractor Transmission
SAE 30 Nondetergent
SAE 30 Nondetergent
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
600.0000 lb
800.0000 lb
656.0000 lb
510.0000 lb
64.0 x 33.0 x 42.5 in
45.5 x 54.25 x 46.25 in
55.5 x 41.5 x 48.3125 in
43.5 x 37.5 x 48.31 in
-
-
Honda
Northstar
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NorthStar Gas Wet Steam and Hot Water Pressure Washer, Honda GX390 Engine, Electric Start, 3000 PSI, 4 GPM
Item # 157310
Order today to get this price.

















