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Dolphin Sigma Review: Technical Specs & Performance Data (2026)
Quick Verdict
The Dolphin Sigma ($1799) is a in-ground pool cleaner rated for pools up to 15m with 2.5-hour cleaning cycles. Wall climbing and waterline scrubbing deliver complete pool coverage.
Performance Metrics
Complete Technical Specifications
| Name | Dolphin Sigma |
|---|---|
| Brand | Dolphin (Maytronics) |
| Category | pool_cleaner |
| Price | 1799 |
| Year | 2026 |
| Pool Type | In-ground |
| Pool Size M | 15 |
| Cleaning Cycle Hours | 2.5 |
| Cable Length M | 18 |
| Filter Type | NanoFilters Gen-2 |
| Climb Walls | Yes |
| Waterline Scrub | Yes |
| Navigation | SmartNav 3.0 |
| Wifi | Yes |
| Remote Control | Yes |
| Weekly Timer | Yes |
| Warranty Years | 3 |
Pros & Cons
Strengths
- Waterline scrubbing removes buildup where debris accumulates most
- WiFi app control enables scheduling and spot-cleaning remotely
- 3-year warranty provides above-average coverage
Limitations
Best For
Compare With Similar Models
The Dolphin Sigma competes directly with these models in the robot pool cleaners category:
- Aiper Scuba V3 Ultra - $1699
- Polaris 9650iQ Sport - $1599
- Ecovacs Ultramarine - $1299
Head-to-Head Comparisons
See detailed side-by-side spec comparisons:
Frequently Asked Questions
What size pool can the Dolphin Sigma clean?
The Dolphin Sigma is designed for in-ground pools up to 15 meters (approximately 49 feet). The 18m cable length determines maximum reach. For optimal performance, use it on pools within the rated size.
How long does a cleaning cycle take?
A complete cleaning cycle takes 2.5 hours. This includes floor, walls, and waterline. This thorough cycle ensures complete coverage of your entire pool surface. You can schedule automatic cycles or start on-demand via the app.
Does the Dolphin Sigma clean the waterline?
Yes, the Dolphin Sigma climbs walls and scrubs the waterline where scum, oils, and debris accumulate most visibly. This feature eliminates the need for manual scrubbing in most cases.
Is the Dolphin Sigma cordless?
No, the Dolphin Sigma uses a 18m power cable. While this provides unlimited runtime without battery concerns, you will need to occasionally untangle the cable if it becomes twisted during cleaning.
How do I clean the filter?
The Dolphin Sigma uses NanoFilters Gen-2. After each cleaning cycle, simply remove the filter, rinse it with a garden hose, and reinstall. NanoFilters capture finer particles than standard filters but require thorough rinsing to maintain suction. Filter cleaning takes 2-3 minutes.
Can I control the Dolphin Sigma remotely?
Yes, the Dolphin Sigma includes WiFi connectivity and a mobile app for remote control. You can start/stop cycles, schedule cleanings, switch cleaning modes, and monitor status from anywhere. This is especially useful for starting a cleaning before arriving home.
Price & Availability
The Dolphin Sigma is priced at $1799 (2026 MSRP). This positions it in the premium segment of the robot pool cleaners market.
Data Accuracy: All specifications verified from manufacturer datasheets and official Dolphin (Maytronics) product documentation as of 2026. Firmware updates may change capabilities over time.