Dolphin (Maytronics) Premier vs Dolphin (Maytronics) Sigma
Researched by Riley Hart · prices checked Oct 26, 2026
As of Oct 26, 2026, the Dolphin (Maytronics) Premier costs $2,499 and the Dolphin (Maytronics) Sigma costs $2,999, so the Dolphin (Maytronics) Premier is $500 cheaper. The Dolphin (Maytronics) Premier has a published review score and ranks #5 in our robotic pool cleaners ranking; the Dolphin (Maytronics) Sigma is not scored yet. Pick the Dolphin (Maytronics) Premier for leafy in-ground pools. Pick the Dolphin (Maytronics) Sigma for set and forget in-ground pools.
- Cleans
- Floor
- Power
- Corded
- Runtime
- 3 h cycle
- Max pool
- 50 ft long
A proven corded cleaner for in-ground pools that get leaves, with a weekly timer and filter options from a big leaf bag to fine cartridges. It has no app and weighs about 20 lb dry. Maytronics showed it as unavailable on its own store when checked, so expect to buy from a dealer.
Full Dolphin (Maytronics) Premier review →- Cleans
- Floor
- Power
- Corded
- Runtime
- 2.5 h cycle
- Max pool
- 50 ft long
The pick for in-ground owners who want the most automated corded Dolphin: app control, a weekly timer and strong waterline scrubbing with no battery to wear out. It is the most expensive robot on this list and does not skim the surface. Skip it if you do not need the app; the Premier cleans similarly for less.
Full Dolphin (Maytronics) Sigma review →Side by side
| Dolphin (Maytronics) Premier | Dolphin (Maytronics) Sigma | |
|---|---|---|
| Price | $2,499 | $2,999 |
| 3 year cost | $2,624 | $3,099 |
| Our score | 6.5/10 | Not scored yet |
| Rank in Pool | #5 | #17 |
| Status | on sale | on sale |
| Warranty | 3 years | 3 years |
| Pool types | In-ground; rectangular, round, free form, kidney | In-ground; rectangular, round, free shape, kidney |
| Cleans | Floor, walls, waterline | Floor, walls, waterline |
| Power | Corded | Corded |
| Runtime | Default 3 h cycle; no battery | Default 2.5 h cycle; no battery |
| Charge time | None (corded) | None (corded) |
| Filter | Multi layer: bottom load filter bag or cartridges, fine filter kit included; full filter indicator | Extra large multi layer top load basket; fine filter plus ultra fine kit in box |
| Max pool size | Pools up to 50 ft long | Pools up to 50 ft long |
| App | None; no Wi-Fi | MyDolphin Plus app over Wi-Fi with scheduling and automation |
| Timer | Weekly timer | Weekly timer |
| Weight | 20.286 lb | 24.63 lb |
| Warranty | 3 years | 3 years |
| Suction | n/a | 4,500 gph (maker) |
| Best for | leafy in-ground pools | set and forget in-ground pools |
| Skip if | you want app control | you do not care about app control |
Specs are maker claims unless a reviewer is named. Prices from the stores we link, checked daily.
What reviewers found
Dolphin (Maytronics) Premier
- Bob Vila (9/10): Cleaned light leaf litter, tile line algae and storm dirt in a Miami pool, ran quietly at about 5 cents per hour, but was heavy to lift and the caddy and remote cost extra. Source
- The Pool Nerd: Names it the author's personal favorite after testing about 30 robots, citing suction, filter choices and the 3 year warranty. Affiliate site with links to Dolphin dealers. Source
Dolphin (Maytronics) Sigma
- The Pool Nerd: Ranked it the best robot the site has tested; the center brush rolled over the main drain every time in weeks of daily testing and its waterline cleaning was the strongest of any Dolphin tried. Affiliate site with links to Dolphin dealers. Source
Pros and cons
Dolphin (Maytronics) Premier
Pros
- Weekly timer, no charging
- Swappable leaf bag and fine filters
- Bob Vila found it cleaned leaves, tile line algae and storm dirt
- 3 year warranty
Cons
- No app or Wi-Fi
- Heavy when full of water
- Cord to manage
- Shown unavailable on the Maytronics store when checked
Dolphin (Maytronics) Sigma
Pros
- Weekly timer means no daily handling
- App control and scheduling over Wi-Fi
- Strong waterline cleaning per The Pool Nerd
- 3 year warranty
- No battery to degrade
Cons
- Highest price here
- Cord to manage
- In-ground only
- Center drain brush is an extra add on
Questions buyers ask
Which is better, the Dolphin (Maytronics) Premier or the Dolphin (Maytronics) Sigma?
The Dolphin (Maytronics) Premier has a published review score and ranks #5 in our robotic pool cleaners ranking; the Dolphin (Maytronics) Sigma is not scored yet. Pick the Dolphin (Maytronics) Premier for leafy in-ground pools. Pick the Dolphin (Maytronics) Sigma for set and forget in-ground pools.
Which is cheaper?
The Dolphin (Maytronics) Premier at $2,499, versus $2,999 for the Dolphin (Maytronics) Sigma, checked Oct 26, 2026. Over 3 years with running costs: $2,624 vs $3,099.
What is the difference between the Premier and the Sigma?
Pool types: In-ground; rectangular, round, free form, kidney on the Premier, In-ground; rectangular, round, free shape, kidney on the Sigma. Runtime: Default 3 h cycle; no battery on the Premier, Default 2.5 h cycle; no battery on the Sigma. Filter: Multi layer: bottom load filter bag or cartridges, fine filter kit included; full filter… on the Premier, Extra large multi layer top load basket; fine filter plus ultra fine kit in box on the Sigma.
Also consider
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All robotic pool cleaners, ranked
See the ranking →Affiliate links. We may earn a commission. It never changes our score. Disclosure