Disclosure: I received the Ecovacs Ultramarine P1 as a review sample from Ecovacs for testing purposes. This review reflects my honest, hands-on experience with the product over several weeks of real-world use. Some links in this article are affiliate links—if you click through and make a purchase, I may earn a small commission at no extra cost to you. I only recommend products I’ve personally tested and believe provide genuine value to my readers.
About the Author: I’m Ton, a product reviewer specializing in smart home and outdoor tech for over 4 years. I’ve tested dozens of robotic cleaners, from indoor vacuums to pool robots. I personally own a 14m² pool and have been using robotic pool cleaners for 3+ years, giving me a solid baseline for comparing what works and what doesn’t. You can see my testing process and real-world results throughout this review.
Quick Verdict
The Ecovacs Ultramarine P1 is a cordless robotic pool cleaner that delivers surprisingly thorough cleaning at a competitive price point (around $500–$550). It combines 4,800 GPH suction, dual-layer filtration (180μm + 3μm), and IMU-guided navigation to systematically clean floors, walls, and waterlines.
Best for: Pool owners who want reliable automated cleaning without the premium price tag of high-end models. It’s ideal for rectangular to moderately complex pools up to 180m².
Skip it if: You have a very complex pool with tight corners and steps, want automatic docking/charging, or expect surface skimming (it only cleans below water).
First Impressions & Unboxing
The P1 arrives in a compact, well-protected box. Inside, you’ll find:
- The robot itself (10.5kg) – sleek white with blue accents
- Charging cable and power adapter
- Retrieval hook (attaches to standard pool pole)
- Extra climbing rings and spare brush rubber
- Quick start guide and full manual
What’s missing: A docking station. Unlike premium models that automatically return to charge, the P1 requires manual connection – a compromise that keeps the price down.
Build quality feels robust. The marine-grade shell and sealed electronics (IP68 waterproof) inspire confidence for long-term pool use.
Setup & App Experience
Setup is refreshingly simple. The quick-start guide is well-illustrated, and you can be cleaning within 20 minutes of unboxing. Here’s the process:
- Charge the battery (5200 mAh, takes a few hours for a full charge)
- Download the Ecovacs app (iOS/Android) – scan the QR code on the robot
- Bluetooth pair – the app walks you through pairing in seconds
- Configure your pool – enter shape, size, depth, and floor type (the app uses this to optimize cleaning paths)
App strengths:
- Intuitive interface with three cleaning modes: Floor Only / Wall Only / Full Pool
- Three power levels: Eco / Standard / Max
- Scheduling: Set daily or weekly cleanings
- Helpful tutorial videos explaining filter use and maintenance
App weaknesses:
- Bluetooth disconnects underwater (technically normal, but not clearly communicated)
- Some interface translations feel incomplete
- No live mapping – the P1 uses basic IMU, not cameras or lidar
Real-World Testing – How Well Does It Clean?
I tested the P1 across multiple scenarios over several weeks. Here’s what I found, backed by numbers from independent tests.
Floor Cleaning (Leaves, Sand, Pebbles)
Verdict: Excellent for its price range.
The 4,800 GPH suction tackles heavy debris effectively. Independent testing showed:
- 99% floor coverage in a 2-hour cleaning cycle
- Effective pickup of leaves up to 2–3cm in size
- Sand and silt captured reliably – the 3μm inner filter traps fine particles that cloud the water
The filter system works. The outer 180μm basket catches leaves and pebbles; the inner 3μm filter traps pollen, algae spores, and fine sand. Ecovacs claims over 99% debris clearance efficiency, which aligns with my experience.
My experience: I deliberately threw sand, pebbles, tea leaves, and flowers into my pool to simulate a “recipe for disaster.” After 30 minutes on Max mode, the floor was spotless. The dual-layer filter caught everything – the outer basket held the leaves and pebbles, while the inner filter trapped the fine sand that had clouded the water.
Wall & Waterline Cleaning
Verdict: Good but not perfect.
The P1 climbs walls using caterpillar treads and suction power. It scrubs:
In independent testing, it achieved:
- 81% wall coverage in a 2-hour cycle (some higher-end models hit 90%+)
- Reaches up to the coping on many pools, scrubbing the full waterline
Limitations:
Stairs & Shallow Areas
Verdict: Mixed results – depends on pool design.
The P1 attempts to clean stairs and shallow ledges, but results vary:
- Successfully climbs onto 8-inch-deep sun shelves and attempts cleaning
- Tries to reach corners and steps, unlike many cheaper robots that simply turn away
- May struggle with complex step configurations – some testers noted it couldn’t fully clean certain step designs
Heads up: If you have a pool with shallow tanning ledges, the P1 may climb out of the water if the shelf is shallow enough. This is a known quirk – keep an eye on it during first use.
Battery Life & Runtime
Ecovacs claims up to 3 hours in Eco mode with a 5,200 mAh battery.
| Mode | Runtime (Est.) | Pool Size Coverage |
|---|---|---|
| Eco | ~3 hours | Up to 180m² |
| Standard | ~2 hours | ~120m² |
| Max | ~1 hour | ~60m² |
In Max mode, I got a thorough clean in ~1 hour for my 8x4m pool – exactly as tested by reviewers.
Realistic take: For most pools (20–50m²), you’ll have plenty of battery for a complete clean in Standard or Max mode.
Maintenance & Filter Cleaning
This is where the P1 shines. The filter is top-access – press a button, lift the basket, rinse with a garden hose. Takes about 1 minute after a heavy cleaning.
Pro tip: Ecovacs recommends starting with the coarse filter only for heavy debris, then adding the fine filter for a second pass. This prevents the 3μm filter from clogging too quickly with large debris.
Comparison With Competitors
The $500–$550 price point puts the P1 in direct competition with other cordless robotic cleaners.
The takeaway: The P1 punches above its weight for cleaning performance, but sacrifices convenience features (dock, auto-park) to hit its price point. The Beatbot Sora 10 is a stronger overall performer but costs $200 more.
Who Should Buy the Ecovacs Ultramarine P1
✅ Budget-conscious pool owners – you want reliable automated cleaning without spending $800+.
✅ Rectangular to moderately complex pools – the IMU navigation works best in simple shapes.
✅ Busy homeowners – you’ll appreciate cutting manual cleaning time by 80–90%.
✅ Those tired of tangled cables – the cordless design eliminates a major frustration of traditional pool vacuums.
✅ Pool owners dealing with leaves and sand – the strong suction and dual filters handle this effectively.
Who Should NOT Buy the Ecovacs Ultramarine P1
❌ Very complex pool shapes (L-shapes, sharp corners, intricate steps) – the navigation isn’t sophisticated enough for perfect coverage.
❌ You prioritize “set and forget” convenience – without a charging dock or auto-park, you still need to manually retrieve and charge the robot.
❌ You have a lot of floating debris – the P1 doesn’t skim the water surface, so you’ll still need a skimmer or manual net.
❌ You have very large pools (180m²+) – the battery and coverage area may not complete a full clean in one session.
❌ You need a robot that handles tight corners perfectly – expect occasional manual touch-ups in corners and step areas.
FAQ – Ecovacs Ultramarine P1
How long does the Ecovacs Ultramarine P1 battery last?
Does the Ecovacs Ultramarine P1 clean the water surface?
Does it come with a charging dock?
How do you get the robot out of the pool?
How often do you need to clean the filter?
Is the Ecovacs Ultramarine P1 worth the price?
How does it handle stairs and steps?
Final Verdict – Honest Assessment
The Ecovacs Ultramarine P1 is a smart, capable pool cleaner that delivers where it matters most – cleaning performance – at a price that’s hard to beat.
What makes it great:
- The 4,800 GPH suction and 3μm filter genuinely handle both heavy leaves and fine sand/pollen
- IMU navigation cleans in systematic paths, not random zig-zags
- Cordless operation is liberating – no cables to manage
- Filter maintenance is genuinely quick and easy
What I wish were better:
- No charging dock means I’m still “hands-on” for charging
- Corners and steps can be missed – manual touch-up sometimes needed
- It’s heavy to lift out, especially when waterlogged
The bottom line: If you’re willing to trade convenience features (dock, auto-park) for solid cleaning performance and a lower price, the P1 is an excellent choice. If you want absolute hands-off luxury, look at the $800+ models.
My experience after 3+ years of pool robot use: I’ve used cheaper corded models, expensive high-end robots, and now the P1. The P1 offers the best price-to-performance ratio I’ve seen. It doesn’t have the bells and whistles, but it cleans the pool effectively, reliably, and without breaking the bank.
Get the Best Price
The Ecovacs Ultramarine P1 is available directly from Ecovacs ($499.99) and select retailers. Check for seasonal discounts – Prime Day and other sales often bring the price down.
👉 Check Current Price on Ecovacs
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