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If you’re cleaning remote areas without a water source or just want more flexibility on the job, pressure washer with a water tank is a game-changer. No more dragging hoses across the yard or relying on outdoor faucets.
In this post, we’ll break down why a built-in water tank matters, who it’s best for, and what to look for when choosing one. Let’s get into it.
Top Pressure Washer with Water Tank Models
Sun Joe SPX6000C-XR iON Max
The Sun Joe SPX6000C-XR iON Max is a versatile jack of all trades. Armed with a powerful 40V/600-Watt motor, it’s ready to tackle a variety of cleaning tasks for homes, RVs, boats, decks, and more. Thanks to its compact design with rear wheels and an integrated carry handle, moving around with this pressure washer is a breeze.
The 5.3-gallon water tank, however, might need refilling should you take on extensive cleaning projects.
Highlights:
- 40V/600-Watt motor for efficient cleaning
- Powerful 1160 PSI Max pressure
- Rear wheels and integrated carry handle for easy mobility
- Compact for easy storage
- 5.3-gallon water tank
WORX WG644 40V Power Share Hydroshot
The WORX WG644 Power Share Hydroshot is an ideal choice if the environment is top of mind for you. This cordless and emissions-free model with dual 20V batteries reduces the environmental footprint while giving you the freedom to move around without any cords in the way.
Please note that it does not come with a bucket, instead you can use any bucket or even a pond or a lake as a water source for this pressure washer.
It offers a moderate but effective 450 PSI for regular cleaning tasks. It’s also lightweight at just 6.9 lbs. Do keep in mind, though, that for larger cleaning tasks, you’ll need to have extra batteries charged and ready to go.
Highlights:
- Dual 20V batteries for greener cleaning
- Does not come with a water tank or bucket
- Offers cordless freedom and reduces emissions
- 450 PSI, suitable for regular tasks
- Lightweight and portable
- May need extra batteries for extended use
Greenworks 40V Cordless Pressure Washer 4Ah USB
The Greenworks 40V Cordless Pressure Washer offers a cordless cleaning experience with a detachable water tank, making it convenient for various cleaning tasks. This pressure washer runs on a 40V battery and delivers power up to 800 PSI, ensuring superior performance for small to medium-sized cleaning projects.
It comes with a 20-ft hose, making it easy to reach different areas without hassle. However, the battery and charger need to be purchased separately if you don’t already own compatible Greenworks equipment.
Highlights:
- 800 PSI for a powerful cleaning experience
- 5-gallon bucket capacity
- Cordless with a 40V battery (not included)
- Detachable water tank for easy filling and cleaning
- 20-ft hose for better reach (can be ordered with longer lengths)
What to consider when choosing a pressure washer with a water tank
- Tank Capacity
- Larger tanks = longer cleaning sessions, fewer refills
- Smaller tanks = best for quick or light tasks
- Pressure & Flow Rate
- High pressure/flow = great for tough grime and big areas
- Moderate levels = good for routine cleaning
- Mobility & Size
- Look for wheels or handles if you’ll move it often
- Compact models are easier to store and transport
- Power Source
- Electric: Quiet, low-maintenance, needs outlet
- Gas: More power, louder, less eco-friendly
- Battery: Cordless, portable, limited run time
- Price & Value
- Don’t overpay for features you won’t use
- Aim for a solid balance of cost, performance, and usability
How to set up a pressure washer with water tank
- Read the Manual – Learn the parts, controls, and safety tips.
- Assemble – Attach the hose and wand.
- Prep the Tank – Rinse out debris.
- Fill the Tank – Use a hose or remove the tank, based on your model.
- Add Detergent – If supported, use pressure-washer-safe solution.
- Power On – Plug in or start the engine.
- Adjust Settings – Set pressure and spray pattern for your task.
Final Thoughts
Remember, a pressure washer’s performance should align with your cleaning needs.
If you need a washer for occasional home use, a model like the Greenworks 40V Cordless Pressure Washer may make sense. On the other hand, if you’re tackling tougher projects, you may opt for a heavy-duty model like the Sun Joe SPX6000C-XR iON Max.
Frequently Asked Questions
1. How important is the water tank capacity in a pressure washer?
Water tank capacity determines the amount of water your pressure washer can hold at a time. Larger tanks allow longer periods of cleaning without needing to refill, whereas smaller tanks might require frequent refilling. The importance of tank capacity would depend largely on your cleaning needs and the duration of your tasks.
2. Can I add detergents to the water tank of my pressure washer?
Typically, pressure washers have separate detergent tanks or dispensing systems to prevent damaging the pump assembly. You should always refer to the user manual to know how your specific model handles detergents.
3. How do I clean the water tank in my pressure washer?
Cleaning instructions can vary by model, and you should consult your user manual. Generally, though, you can clean the water tank with a solution of water and a mild bottle brush, rinse thoroughly, and dry before storing.
4. Will my pressure washer work without a water tank?
Yes, many pressure washers can operate using a standard garden hose connection as the water supply. However, having an integrated water tank allows for portability and is useful for cleaning tasks where a water source isn’t readily available.
5. Does a pressure washer with a water tank use more water than one without a tank?
No, having a water tank doesn’t necessarily increase water usage. The amount of water used typically depends on the washer’s flow rate (GPM), not whether it has a tank. In fact, pressure washers often use less water than traditional garden hoses while providing improved cleaning power.
6. If I run out of water in my tank, will the pressure washer still run or shut off?
Most pressure washers are equipped with safeguards and will shut off if they run out of water, preventing damage to the pump. Some models may allow the motor to run but will not blast water without a water supply.
