The 8 Best Foam Cannons
This wiki has been updated 4 times since it was first published in June of 2019. Foam cannons attach to industrial or household pressure washers, creating suds by mixing soap with pressurized water. Car enthusiasts and professional detailers alike prefer these to hand washing because, besides also being a lot of fun, they allow users to perform a thorough, touchless wash on any vehicle, thereby minimizing the risk of scratching. When users buy our independently chosen editorial picks, we may earn commissions to help fund the Wiki. Skip to the best foam cannon on Amazon.
June 28, 2019:
If you have access to a pressure washer, a foam cannon can be an effective and relatively inexpensive way to give a great wash to your car, truck, boat, bike, ATV... essentially any vehicle. Some users even report having success using these devices to wash windows or clean the exteriors of their homes.
Not only do foam cannons allow for a relatively quick cleaning process, they also afford you the peace of mind that comes with knowing you won't accidentally gouge your paint job with a stray piece of gravel – as may occur during hand washing. It's for this reason that these devices are favorites of professional detailers and car enthusiasts alike. It's also worth mentioning: the general consensus seems to be that working with these can be a lot of fun.
A few things to note while shopping for one of these products:
Know the difference between a foam cannon and a foam gun. While the two may sound quite synonymous, the semantic subtlety here should not be slighted. Foam cannons attach to pressure washers. Foam guns attach to garden hoses. Although foam cannons are certainly considered to be the superior option among the two, if your budget finds a household pressure washer to be prohibitively expensive, then you might want to consider investing in a foam gun. The items ranked on this page are all foam cannons, and therefore will all need to be used with a separately-purchased pressure washer.
While all the offerings ranked here are capable of giving your vehicle a great wash, you should expect some variance in product quality between top-priced and bottom-priced options. Common complaints with the inexpensive options include incompatibility with certain pressure washers, and poor sealing between the cannon and its reservoir. Some users have reported solving these issues by sanding down the cannon's male fitting, or improving the seal with a rubber washer from a garden hose. Some top-priced options also claim that their cannons offer longer product-life, via the superior quality of their components, a claim some have backed with one-year and two-year warranties.
And, it's not all about the cannon; you need to consider which soap is best for your purposes, as well. While these cannons can use virtually any soap to properly produce foam (some users even report great success using Tide or common dish soap), their is a wide variety of specialty soaps available online that can help you achieve a superior level of clean for your ride. Several companies with products ranked on this page, including Chemical Guys and Adam's, also produce their own line of specialty soaps. Some of these companies even offer packages, selling their soaps and cannon together as a kit – a possibility worth investigating, as it might offer you the opportunity to save a few dollars on your gross purchase.