# Dolphin (Maytronics) Nautilus EON 120d vs Polaris VRX iQ+

As of Oct 26, 2026, the Dolphin (Maytronics) Nautilus EON 120d costs $1,199 and the Polaris VRX iQ+ costs $1,499, so the Dolphin (Maytronics) Nautilus EON 120d is $300 cheaper. Pick the Dolphin (Maytronics) Nautilus EON 120d for fine dirt and sun ledges. Pick the Polaris VRX iQ+ for in-ground pools wanting top cleaning.

Prices checked Oct 26, 2026. HTML version: https://robotsforthat.com/vs/dolphin-nautilus-eon-120d-vs-polaris-vrx-iq-plus/

## Side by side

| | Dolphin (Maytronics) Nautilus EON 120d | Polaris VRX iQ+ |
|---|---|---|
| Price | $1,199 | $1,499 |
| 3 year cost | $1,199 | $1,649 |
| Our score | Not scored yet | Not scored yet |
| Rank in Pool | #11 | #14 |
| Status | on sale | on sale |
| Warranty | 1 year (Nautilus EON 120d listing) | 2 year limited |
| Pool types | In-ground and above-ground; rectangular, round, free form, kidney | In-ground, up to 60 ft (Leslie's listing) |
| Cleans | Floor, walls, waterline, steps, sun ledges as shallow as 8 in, corners | Floor, walls, waterline; no surface skimming |
| Power | Cordless, lithium-ion (capacity not published) | Corded, 70 ft floating cable with swivel; plugs into a GFCI outlet |
| Runtime | Cycles of 1.5, 2 or 2.5 h; Maytronics blog claims up to 4 h per charge; UltraRun short cycles claimed to last up to 2.5 weeks per charge | SMART Cycle sets time; PCWorld measured 2 h 45 min deep clean, 1 h 15 min floor only, 45 min waterline only |
| Charge time | n/a | None (corded) |
| Filter | DebrisLock ultra fine backwash filter, top access | 5 L illuminated canister with dirty canister indicator; sand and silt canister sold separately |
| Max pool size | Pools up to 50 ft long | In-ground pools up to 60 ft (Leslie's) |
| App | Maytronics One app for scheduling, monitoring and alerts | iAquaLink app with scheduling, remote control, spot cleaning and OTA updates |
| Weight | 24.255 lb | n/a |
| Warranty | 1 year on the Nautilus listing (3 years on the store exclusive EON 120d listing) | 2 year limited (Leslie's) |
| Drive | n/a | 4WD with front brushes |
| Best for | fine dirt and sun ledges | in-ground pools wanting top cleaning |
| Skip if | you hate fiddly filter cleaning | you hate managing a cord |

## What reviewers found

### Dolphin (Maytronics) Nautilus EON 120d

- PCWorld: Tested the EON 120d: DebrisLock filter trapped all types of debris and coverage reached about 95% on the longest cycle, but emptying the filter was a huge pain, it missed corners, failed to start twice at first, and often flipped onto its back. [Source](https://pcworld.com/article/3084901/maytronics-dolphin-eon-120d-review.html)
- The Pool Nerd: Notes the EON line cleans water as shallow as about 8 in with better than basic mesh filtering, but still requires hooking, lifting, drying and charging; Clicker retrieval is mentioned for the 120d. [Source](https://www.thepoolnerd.com/best-cordless-robotic-pool-cleaners)

### Polaris VRX iQ+

- PCWorld: Best corded pick; found 99% of synthetic leaves, missing one on a step, and was one of the fastest robots tested. Managing the power cord took extra effort. [Source](https://www.pcworld.com/article/2290595/polaris-vrx-iq-pool-cleaning-robot-review.html)

## Questions buyers ask

### Which is better, the Dolphin (Maytronics) Nautilus EON 120d or the Polaris VRX iQ+?

Pick the Dolphin (Maytronics) Nautilus EON 120d for fine dirt and sun ledges. Pick the Polaris VRX iQ+ for in-ground pools wanting top cleaning.

### Which is cheaper?

The Dolphin (Maytronics) Nautilus EON 120d at $1,199, versus $1,499 for the Polaris VRX iQ+, checked Oct 26, 2026. Over 3 years with running costs: $1,199 vs $1,649.

### What is the difference between the Nautilus EON 120d and the VRX iQ+?

Pool types: In-ground and above-ground; rectangular, round, free form, kidney on the Nautilus EON 120d, In-ground, up to 60 ft (Leslie's listing) on the VRX iQ+. Cleans: Floor, walls, waterline, steps, sun ledges as shallow as 8 in, corners on the Nautilus EON 120d, Floor, walls, waterline; no surface skimming on the VRX iQ+. Power: Cordless, lithium-ion (capacity not published) on the Nautilus EON 120d, Corded, 70 ft floating cable with swivel; plugs into a GFCI outlet on the VRX iQ+.

Full reviews: [Dolphin (Maytronics) Nautilus EON 120d](https://robotsforthat.com/robot/dolphin-nautilus-eon-120d/index.md), [Polaris VRX iQ+](https://robotsforthat.com/robot/polaris-vrx-iq-plus/index.md)