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
The listing's size menu spans 9 models — this page is the Nautilus CC Plus. Check the size before you add to cart.
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 | 3.5★ / 3,299 |
| Warranty | 1 year |
| Replacement filters | Ships with the Ultra-Fine Filter Kit included — the only Dolphin here that does. Replacement panels 9991432-R4 are $49.99 from Maytronics or $38.49 on Amazon. Maytronics publishes no micron figure for any tier. |
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, on a deep owner base (3,299 ratings, pooled across the Nautilus family on this listing)
- Great for large pools
Cons
- Amazon's buy box on this listing comes and goes — in September it was suppressed ("High price") while Maytronics sold the same Wi-Fi SKU direct for less — so 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 3.5★ 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.
899 written critical reviews against a base of 3,299 at the 2026-10-19 pass; the histogram puts 25% of the ratings at one star. The newest still lead with power supplies, cables and drive motors failing at one to three years, and two say quality dropped between generations · critical reviews read 2026-10-19
Pro review “Shorter warranty. Fewer features. Less automation. The new Dolphin Nautilus CC Plus is here, and it isn't the deal 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?
3.5★ across 3,299 owner ratings (Amazon, read 2026-10-19 · 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
What does the Dolphin Nautilus CC Plus clean, and what size pool is it for?
Floor + walls. Pools up to ~50 ft.
Record
- — Re-read: 3.5 stars across 3,299 Amazon ratings (was 3.6 across 3,260), a quarter of them one-star. The buy box is back at $849, and the seller is Maytronics' own Amazon storefront.
- — Correction to the 2026-09-04 entry: the non-Wi-Fi CC Plus is back on Maytronics' US store ($829), beside the Wi-Fi model we link ($849); both list a 1-year warranty there.
- — Assessed two deeper Dolphin listings and kept this one: the Nautilus CC (4.0 stars across 10,742) and a non-Wi-Fi CC Plus listing (4.3 across 13,983). Both bases pool older generations and other countries, and their newest critical reviews report the same power-supply and motor failures.
- — Professional quote corrected: the card had joined two separate sentences from The Pool Nerd's review into one quote. It now carries one passage exactly as the review prints it.
- — Price read 2026-10-02 from the live Amazon offer (Creators API): $749, no deal flag; was $819.99. Published at read time per the 2026-09-15 rule, ahead of Prime Big Deal Days.
- — 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.
Cleans: Floor + walls · Sized for: Pools up to ~50 ft
Warranty — and what changes if you buy it on Amazon
1 year · you are buying this on Amazon
Read it yourself: Maytronics warranty document · we read it . Terms change without announcement, so treat this as a dated snapshot. How warranty works by buy path →
What we have seen it sell for
- — $849 recorded
- — $819.99 recorded
- — $748.99 recorded
- — $799 recorded
Each date is when we recorded that price, not necessarily the day it changed — we publish what we can prove. Prices we later corrected are left out rather than shown as moves.
✓ 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. CPSC recall API re-checked 2026-10-19 (saferproducts.gov/RestWebServices/Recall): ProductName=Beatbot 0 and RecallTitle=Beatbot 0; ProductName=Aiper and RecallTitle=Aiper return only #23784 (Elite Pro, 2023) and #25187 (Seagull Pro, 2025); RecallTitle=Maytronics 0, and ProductName=Dolphin returns two unrelated records (#03081 novelty lighters, 2003; #95123 Dolphin Baby Float, 1995); the class query RecallTitle="Robotic Pool" now returns three — #26372 (Wybotics, 2026-04-09), #25187 and #23784. Positive control ProductName=heater returned 183 records with no error object.
Size your pool first → ·All pool gear →
Data last verified: 2026-10-19. Ratings are real, dated reads — never scraped or invented. Full methodology and monetization disclosure: how we test.