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The Best Foam Cannon

Last updated on April 27, 2023

Our Review Process

Don't Waste Your Money is focused on helping you make the best purchasing decision. Our team of experts spends hundreds of hours analyzing, testing, and researching products so you don't have to. Learn more.

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Our Picks For The Top Foam Cannons

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Product Overview
Key Takeaway
 Top Pick

Tool Daily Universal Adjustable Nozzle Pressure Washer Foam Cannon

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Tool Daily

Universal Adjustable Nozzle Pressure Washer Foam Cannon

Connect this to any pressure washer and you've got a reliable source of cleaning foam for a variety of surfaces. It comes with five different nozzles, each with a different angle. The compact profile makes it easy to carry and handle.

Overall Take

Portable and AdaptableChoose your nozzle and clean with confidence.

 Runner Up

TriNova Wide Neck Heavy Duty Pressure Washer Foam Cannon


Wide Neck Heavy Duty Pressure Washer Foam Cannon

With a simple turn of the nozzle, you can temper the water flow to produce just the kind of suds you need. A wide top ensures that there's no blockage. No matter what size car you have to clean, this washer will do the job.

Overall Take

Adjustable Foam OutputGet a consistent foam flow with this cleaner.

 We Also Like

SwiftJet Garden Hose Car Wash Foam Cannon Sprayer


Garden Hose Car Wash Foam Cannon Sprayer

With this cannon, there's no need for a pressure washer hook-up. You simply screw onto your garden hose and spray away. If you use the right soap, you can have a constant, thick spray of foam for any occasion.

Overall Take

Hooks to HoseThis cannon is ideal for home cleaners.

 Strong Contender

Twinkle Star Adjustable Quick Connector Foam Cannon

Twinkle Star

Adjustable Quick Connector Foam Cannon

With the right pressure washer, you can use this clean almost anything. Each of the five nozzles are capable of putting out thick foam for as long as the water lasts. After the washing upkeep is easy and the cannon is built to last.

Overall Take

Nice Thick FoamFor big jobs, you'll want this versatile cannon.

Buying Guide

Anyone who has ever washed a car knows how much time you can save with a foam cannon. These sprayers are designed to do one job and one job only: Create a lot of suds and put them in a specific area. Whether you’re cleaning a car, van or some other large outdoor item, they’re a big step up from the old-school “sponge and a bucket of soap” technique.

When we talk about foam cannons, we’re generally referring to a tank with a nozzle that attaches onto a pressure washer. That tank holds a soapy solution, and when water gets pushed through it at a high volume, you end up with thick, clinging foam. There are also foam guns, and you won’t need a pressure washer for these. They can attach to a standard garden hose, and while they won’t produce the high-density foam of a cannon, they can be a good budget option for those who only clean their automobile once in awhile.

If you’re buying a foam cannon, the first thing you’ll need to check is whether it’s a good fit with your pressure washer. Heavy-duty pressure washers can pump out large quantities of liquid that some cheaper cannons aren’t equipped to handle. Check your cannon’s maximum capacity for two ratings: GPM (gallons per minute) and PSI (pounds per square inch). The former refers to the flow output and the latter is what kind of pressure you can expect.

In terms of the actual fitting that connects your cannon to the washer, they’re usually one size fits all. You will want to make sure that fit is secure, though. Your best bet is to go with a stainless steel connector that won’t bend or tarnish, though brass fittings can also work well. If you plan on using your pressure washer for more than just spraying foam, you may want to look for a quick-release connector. This should save you a little time on both assembly and disassembly.

If you’ve got a larger vehicle to wash, you’ll want a foam cannon with a lot of holding capacity. Most canisters hold roughly a liter, though you can go bigger. Just make sure you can maneuver with the extra weight.

Finally, buy with versatility in mind. Your pressure washer might be able spray several gallons per minute, but you won’t always need that much power. Choose a foam cannon with a nozzle that can regulate the flow based on what your foam mixture requires — and what your car needs.

What to Look For

So your car is begging for a wash and you’ve got your foam cannon ready to go. All you need now is a little fuel. The right foam mixture can make a ton of difference in what actually comes out of your cannon, no matter how powerful it is. If you’re on a budget, you can use regular dish soap in most machines. Foam formula generally doesn’t cost that much, and you can expect it to create a more consistent flow. Whichever one you use, you’ll need to dilute it with water first. Go with a 1:4 ratio of water to foam concentrate first, then add more concentrate if you want more thickness from there.

When you’re done with the wash, a little upkeep will prevent blockage. Rinse out your bottle thoroughly so there’s no foam solution left over. Spray some water through to clear any foam out of the nozzle and you’re ready for the next car wash.

More to Explore

Foam is a fun way to wash your car, but there’s a use for foam machines that does away with the work altogether. Foam parties have been popular in rave culture since the 1990’s, but modern nightclubs didn’t invent these messy events. In the 1932 short “A Rhapsody in Black and Blue,” you can see Louis Armstrong performing with his band on a stage full of foam bubbles.

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