Foam Cannon vs Foam Gun – Key Differences Explained
Not sure whether to use a foam cannon or a foam gun? They might look similar, but they’re totally different tools—and one produces much better results than the other. Here’s what you need to know.
What Is a Foam Cannon?
A foam cannon connects to a pressure washer and sprays thick, shaving cream-like foam onto your vehicle. The high PSI from the washer atomizes the soap and water, creating ultra-dense foam that clings to your paint and lifts dirt.
For a full breakdown, check out What Is a Foam Cannon?.
What Is a Foam Gun?
A foam gun connects to a regular garden hose. It mixes soap and water but without the pressure required for thick foam. The result is light, airy suds that don’t cling well and rinse off quickly.
Foam Cannon vs Foam Gun: Side-by-Side
| Feature | Foam Cannon | Foam Gun |
|---|---|---|
| Requires Pressure Washer | ✅ Yes | ❌ No |
| Foam Thickness | Very Thick & Clinging | Light & Runny |
| Cleaning Power | High | Moderate |
| Ease of Setup | Needs Equipment | Plug & Spray |
| Best For | Paint-Safe, Swirl-Free Washing | Light Maintenance or Quick Rinse |
Which One Should You Use?
If you want serious cleaning power, swirl prevention, and better soap dwell time—go with a foam cannon. It’s safer and more effective, especially when paired with The Super Soaper.
If you’re limited to a hose setup, a foam gun can be a decent upgrade from just pouring soap in a bucket. But don’t expect the same results.
Want to Upgrade?
Here’s everything you need for a proper foam cannon setup:
More Helpful Guides
- How to Use a Foam Cannon
- Can You Use a Foam Cannon Without a Pressure Washer?
- Best Soap for Foam Cannons
FAQs
Do foam guns work as well as foam cannons?
No. Foam cannons produce thicker, more effective foam using pressure washers. Foam guns offer convenience but don’t deliver the same cleaning performance.
Can I use The Super Soaper in both?
Yes. The Super Soaper foams well in both foam cannons and foam guns—but you’ll get the thickest results with a pressure washer setup.
Is it worth upgrading from a foam gun to a foam cannon?
Definitely. Foam cannons deliver better results, especially when you’re trying to minimize swirl marks or deep-clean a dirty vehicle.
