Dolphin Nautilus CC Plus
Best for big pools — A corded robotic pool cleaner for big pools (up to 40 ft) that runs as long as you need with no battery, and the deepest owner base on the page — with a 25% one-star share that is mostly power supplies and motors failing inside the first year or two — the trade-offs are managing a floating cord and flaky Wi-Fi
Contender — The Best Corded Robotic Pool Cleaners of 2026
Contender — The Best Robotic Pool Cleaners of 2026: Cordless vs. Corded, Compared
⚔️ Matchup — Dolphin Nautilus CC Plus vs Aiper Scuba S1
Specs
| Power | Corded (no battery) |
| Cleans | Floor, walls + waterline |
| Pool size | In-ground up to 40 ft |
| Filtration | Ultra-fine filters (µm not published) |
| Surfaces | All surfaces incl. vinyl (active scrubbing) |
| Rating basis | Listing-wide — the Amazon size menu pools nine Dolphin models on one base · global base |
| Owner rating | 3.6★ / 3,260 |
| Warranty | 1 year |
Filtration is rated in microns (µm — millionths of a meter): the smallest particle the filter reliably traps, so a lower number is a finer filter. A human hair is ~70 µm; ultra-fine (~3–10 µm) catches the silt and dead algae that make water hazy. "µm not published" means the maker states no number — which is information in itself.
Pros
- Runs as long as you need — no battery
- Cleans well when it runs — owners and the tail agree on that; the deepest owner base of any cleaner we track (3,260, pooled across the Nautilus family)
- Great for large pools
Cons
- Amazon has suppressed this listing's buy box ("High price"): offers start at $819.99 while Maytronics sells the same Wi-Fi SKU direct for $749 — check the maker's store before you buy here
- You manage a floating cord
- Doesn't always hit the waterline as aggressively as top cordless models
- Owners report flaky Wi-Fi/app connectivity — the main drag on its 3.6★ rating
It cleans well and owners say so in the same breath — the complaint is that it does not keep doing it. Power supplies and motors failing inside the first year or two recur, with slow warranty replacement (one owner waited eight weeks), and a second, smaller theme is getting stuck on steps and in corners. Several also note it handles fine silt better than large debris.
6 of the first 10 critical cards describe a failure or unreliability rather than cleaning performance; 864 critical reviews against a 3,223 base at the August 2026 pass (3,260 on the 2026-09-04 re-read) · critical reviews read August 2026
Pro review “It'll still clean your pool better than any cordless cleaner under $1,000. But it's not the robot it used to be.”Hands-on test of the 2026 Nautilus CC Plus in The Pool Nerd's own test pool (published 2026-07-31; "I've tested over 40 robotic pool cleaners in the last five years in our test pool"). Verdict: 'Pool Nerd Disapproved' — the warranty was cut from 2.5 years to 1, the NanoFilters and waterline cleaning are gone, and the price did not drop to match. His finding independently corroborates the 1-year warranty this card records from maytronics.com.— Justin D., The Pool Nerd
FAQ
Who is the Dolphin Nautilus CC Plus for?
You have a big pool (up to 40 ft) and want a corded workhorse that runs as long as you need with no battery to replace — as long as you'll manage a cord and live with flaky Wi-Fi.
What do owners say about the Dolphin Nautilus CC Plus?
3.6★ across 3,260 owner ratings (Amazon, read September 2026 · listing-wide base · global base). What owners complain about: It cleans well and owners say so in the same breath — the complaint is that it does not keep doing it. Power supplies and motors failing inside the first year or two recur, with slow warranty replacement (one owner waited eight weeks), and a second, smaller theme is getting stuck on steps and in corners. Several also note it handles fine silt better than large debris.
What is the warranty on the Dolphin Nautilus CC Plus?
1 year
Record
- — Professional review corrected: The Pool Nerd's July 2026 hands-on test of the 2026 CC Plus is negative — 'not the robot it used to be', with the warranty cut to one year and waterline cleaning gone — and it now sits on the card; a quoted line praising its reliability that was not on the reviewer's page was removed.
- — Warranty read from the maker: the Wi-Fi SKU we link carries 1 year on maytronics.com; the older non-Wi-Fi unit (2 years) is no longer on the US store.
- — Amazon suppressed this listing's buy box ("High price"); offers start at $819.99 while Maytronics sells the same Wi-Fi SKU direct for $749. Owner base 3,260 and the listing's size menu pools nine Dolphin models on that one number, so the rating is now flagged as pooled.
- — Removed a quoted 'review' from Pool Express: it is a retailer that sells the robot, not an independent tester. No credentialed hands-on test of this exact model was found, so the card rests on its owner record.
✓ Safety: no active recall — Corded — no onboard lithium battery, so none of the charging-fire risk of cordless robots. No CPSC recall on any Maytronics/Dolphin pool robot — CPSC recall API re-checked 2026-09-04 (saferproducts.gov/RestWebServices/Recall, ProductName=Maytronics → 0; "Dolphin pool" → 0). Class queries the same sitting: "robotic pool cleaner" and "pool cleaner" return only Aiper Seagull Pro #25187; "pool skimmer" returns 0. Positive control: "Aiper" returns its two robot recalls (#23784 Elite Pro 2023, #25187 Seagull Pro 2025), so a zero is a real answer.
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Data last verified: September 2026. Ratings are real, dated reads — never scraped or invented. Full methodology and monetization disclosure: how we test.