What’s up guys! Ryan here from ActuallyUsed. I’ve been running two of the best robotic pool cleaners of the year in the pool for a few weeks now—the Dolphin Premier and the Dolphin Sigma.
These are the two top models from Dolphin – and I’m excited to share my thoughts. Both are ProLine robots with commercial-grade motors, NanoFilters, and suction power that blow away every other robot I’ve tested. A robotic pool cleaner is an investment in your pool that will save you time, money, and a lot of hassle cleaning your pool. And today, I’m going to show you why you really can’t go wrong with either of these — and why they’re easily two of the best pool robots this year.
Here at ActuallyUsed, everything gets put through real-world tests. I’m not just sitting behind a screen talking about specs — I actually use these products. I measure real suction power with a manometer, run each robot for weeks, and see what it’s like to actually own and live with them.
After weeks of real-world testing, I’ve got the numbers for y’all. From suction power, what it’s like to use and own, and the stuff that doesn’t make it onto spec sheets, I’ll cover it all. If you’re deciding between these two, stick around. There are some things you’ll definitely want to know before deciding which is right for your pool.
Why I’m Impressed
After testing over a dozen pool robots so far, I have to say - these two are in a league of their own. Most pool robots feel okay at best—thin plastic, sketchy motors, exposed foam, and daily recharging. You know the drill: cheap units that cut corners to cut costs. These two? Totally different story.
Both the Premier and the Sigma? Built like tanks. They both have the same commercial-grade Dolphin DNA from the Dolphin ProLine, and honestly, they clean circles around a lot of the cordless robots you may keep seeing online like I did. You can tell right out of the box — they’re solid, well-built, and are something that’s going to last for years.
How do I know? Well, I dug around online and found a pool owner who’s been running the Premier for over 8 years — and it’s still going strong. Pretty wild. Now, sure, there’ve been some upgrades since then — like the Sigma getting a smartphone app, the Premier adding Multi-Media, and both now supporting NanoFilters — but the core takeaway? These things are built to last. You’re not buying something that’ll flake out after a season or two.
I’ve been testing both of them for weeks now, through everything — regular daily cleanings, big messes after storms — and they’ve handled it all without any issues.
But here’s where it gets interesting — they go about things a little differently. Both are super consistent workhorses, but the Premier leans more toward versatility. It’s got multiple filter options you can swap out depending on what your pool needs. The Sigma, on the other hand, is a bit more connected — it’s got a smartphone app, plus it runs on three motors instead of two, so you get a little more power and control. Let’s break it down.
Filtration: The Game-Changing Difference
This is where these robots start to diverge in interesting ways.
Premier comes with their Multi-Media system, which is a game changer. It includes three filters in the box:
- Leaf bag for those big seasonal dumps - this thing swallows acorns and leaves like a hungry hippo
- Standard mesh for everyday crud and general maintenance
- NanoFilters that polish the water crystal clear - seriously, these catch particles you didn’t even know were there
What I love about the Premier’s approach is flexibility. Have a ton of leaves? Throw in the leaf bag and watch it devour everything. Want that sparkling clear water for a party? Swap to the NanoFilters. It’s like having three different robots in one.
Sigma takes a different approach and doubles down on two enormous top-loading NanoFilters. And can we talk about this design for a second? Pop the lid, pull straight up—no flipping a 20-pound wet robot, no splash party on the deck. It’s such a simple innovation but it changes everything.
Both of these come with NanoFilters, which honestly, I think is a must-have if you’re buying a robotic pool cleaner. So on that front, you really can’t go wrong with either one. They also both include the standard filter set, which is great if your pool tends to get larger debris — helps make sure nothing gets left behind.
If leaves are your pool’s worst enemy, Premier’s bag is priceless. If fine dust, pollen, or sand rules your pool like it does mine here in Texas, NanoFilters are the way to go. The amount of debris these filters capture is shocking - stuff that would normally pass right through standard mesh filters.
Suction Power: The Numbers Don’t Lie
Here’s where I get nerdy. I hooked a manometer to both units to ditch the marketing fluff and get real numbers:
- Dolphin Premier: 2.6 PSI—already 160% stronger than average cordless units
- Dolphin Sigma: 2.8 PSI—a hair stronger, thanks to that third motor
For context, most cordless robots I’ve tested struggle to maintain even 1.0 PSI. The Aiper Scuba X1? 1.1-1.2 PSI on a good day. The Beatbot AquaSense 2? 1.6 PSI when fully charged, but it fades fast. Anything over 2 PSI is super suction territory.
But here’s the kicker - both Dolphins maintain full power the entire 2.5-hour cleaning cycle. No battery fade, no weak spots, just consistent, powerful suction from start to finish. It’s like comparing a Ferrari to a Toyota Camry.
The real-world difference? Both robots can climb walls all the way to the waterline without hesitation. They don’t just push debris around - they actually capture it. Sand, silt, algae, leaves - it all gets sucked up and trapped.
Navigation & Coverage: Smart vs. Smarter
Premier uses SmartNav 2.0, and honestly, it’s already impressive. It maps your pool, creates efficient cleaning paths, and never gets wedged in corners like cheaper robots. I’ve watched it navigate around my ladder, pool lights, and even pool toys without missing a beat. It doesn’t waste time re-cleaning the same spots or missing areas entirely.
Sigma adds a gyroscope with SmartNav 3.0—and the difference is subtle but noticeable. Tighter turns, quicker recoveries from obstacles. The gyroscope helps it maintain orientation even when climbing walls or navigating tricky transitions.
One small difference between these two is the total cleaning path. The Sigma runs dual 5-inch brushes, giving it a full 10-inch cleaning path. The Premier’s brushes are slightly narrower at 4.75 inches each, for a total of about 9.5 inches. In practice, that extra half inch per pass isn’t huge, but over the course of a full cleaning cycle, the Sigma covers just a bit more ground with each sweep. It’s a subtle edge in efficiency, especially in larger pools — though both of these are plenty capable when it comes to full coverage.
Watching either robot work is like a robot vacuum timelapse underwater, but Sigma’s path looks just a touch more deliberate.
Corded Convenience: Why I’m Never Going Back to Cordless
Let’s address the elephant in the room - yes, these are both corded. And after testing both extensively against cordless models, I’m convinced corded is the way to go.
Cordless looked sexy in those Instagram ads—clean aesthetic, no cable management. But the reality? I had to fish a 20-pound brick out every single day, drip across the deck, wait three to four hours for a charge, only to get 60-90 minutes of cleaning. And that’s when the battery is new - wait a year and see how that runtime drops.
With the Premier and Sigma, I go outside once a week, set the weekly schedule on the power supply, and literally ignore them until the end of the week. That’s 13 fewer pool trips a week. No battery degradation. No wondering if it has enough juice to finish the job.
Both come with 60-foot anti-tangle swivel cables that actually work. In weeks of testing, I haven’t had a single tangle issue with either robot. The swivel design lets them move freely without creating a twisted mess.
AutoStart & Scheduling: Set It and Forget It
This is where corded models really shine. Both the Premier and Sigma feature AutoStart with weekly programmable timers. The Premier’s timer is dead simple - just press the button and select your schedule – every day, other day, or every three.
The Sigma also adds app control on top of that, which gives you way more flexibility. You’re not just setting how often it runs — you can actually schedule the exact days and times you want it to clean. So if you want it running every morning before you swim, or at night after the pool’s been used, it’s just a few taps in the app.
And what does that actually mean day to day? Your pool gets cleaned automatically, on your schedule, without you having to touch a thing. You don’t have to remember to start it, you don’t have to drag it out, nothing. Just set it and forget it.
Now compare that to a cordless model. With those, you’re charging it constantly, and you still have to go out and manually start a cycle every single time. It’s way more hands-on. The Sigma really gives you that true “automated” experience.
Real-World Performance
After weeks of back-to-back testing in the pool, here’s my thoughts:
The Premier absolutely devours leaves and acorns. I’ve seen it tackle post-storm cleanups that would completely overwhelm most other robots. The oversized leaf bag is no joke — It picks up a ton of leaves. And once you swap in the NanoFilters, you’ll see a huge difference in water clarity.
The Sigma, on the other hand, is a beast when it comes to fine silt and dust. Those dual NanoFilters catch particles I didn’t even realize were floating around in the water. And the way it climbs the waterline? It’s like it’s trying to show off. That third motor definitely gives it a little extra punch when it’s working on cleaning the pool walls.
At the end of the day, both of these robots have cut my manual pool maintenance way down — from about 90 minutes a week to maybe 10 total. Just enough time to rinse off the filters and occasionally touch up any tight spots they can’t quite reach.
Time Savings: The Real Value
Let me break down the actual time investment:
- Manual cleaning: 90-120 minutes per week
- Cordless robot: 10 minutes daily for retrieval/charging (70 minutes weekly)
- Premier or Sigma: 10 minutes once per week for filter cleaning
That’s over an hour saved every single week. Multiply that by pool season, and we’re talking 40+ hours annually. What’s your time worth?
The Smartphone App Experience
Since only the Sigma has app control, let me dive into that. Unlike the flaky apps I’ve tested on robots like the Beatbot (which lose connection the second they hit water), the Sigma’s app actually works. You can:
- Start/stop cleaning cycles remotely
- Check cleaning status and history
- Control navigation manually (fun for showing off to guests)
- Set custom schedules beyond the power supply timer
Is it essential? No. Is it nice to have? Absolutely. Especially if you’re already deep in the smart home ecosystem.
Downsides: Keeping It Real
No product is perfect, so let’s talk drawbacks:
Premier:
- No smartphone app (though honestly, the physical controls work flawlessly)
- Price point around $1,500 is definitely an investment
Sigma:
- If you don’t have Wi-Fi nearby, you’ll be limited to bluetooth only as an app option
- Costs about $200-300 more than the Premier
- Doesn’t have a leaf bag or multi-media
That’s it—the list is refreshingly short for both models.
Which One Should You Buy?
Pick Premier if:
- You battle heavy leaf season or have lots of trees
- You want the simplest “one-button weekly” operation
- Multi-media filtration flexibility appeals to you
- Saving a couple hundred bucks matters more than app control
- You prefer proven technology without the features you don’t need
Pick Sigma if:
- Dust, sand, pollen, or fine debris is your daily headache
- You love checking status or controlling things from your phone
- Top-loading filter access is a must-have feature
- You want the absolute strongest residential Dolphin on the market
- The latest navigation technology appeals to you
Long-Term Value
When considering total cost of ownership rather than just sticker price, both robots make sense:
- Dramatically reduced time spent on maintenance (40+ hours saved annually)
- Lower chemical usage due to better filtration
- Significantly lower energy consumption than pressure-side cleaners
- 2-3 year warranties with solid customer support
- No battery replacements ever needed
Over a 5-year period, the cost difference between these and cheaper models becomes negligible when factoring in replacement batteries, time savings, and the fact that these actually work reliably.
Final Verdict
Either robot embarrasses every cordless cleaner I’ve tested. They’re both benchmarks for what residential pool robots should be: powerful, smart, and genuinely automated.
Bottom line: pick the features that match your pool’s needs, and you’ll never touch a manual vacuum hose again. These aren’t just pool robots — they’re time-savers that give you hours back every single week.
That’s my head-to-head on the Dolphin Premier vs. Sigma. If you’ve got questions about your specific pool or other models you’re considering, drop them below. Hit like if this helped cut through the usual marketing noise, and subscribe for more no-nonsense, actually-used reviews.
And remember — good tech should make life easier, not add more work. Both of these do exactly that.
See you in the next one! Thanks for watching.
