Dolphin Explorer E20 versus Dolphin Sigma®
Compare Features, Filters, and Warranty
Dolphin Explorer E20LOWEST PRICE
Dolphin Sigma® Robotic CleanerLOWEST PRICE
Explorer E20 includes
|Cleans floor (no wall or tile / waterline coverage)||Ultimate Coverage - Full floor, wall, and waterline coverage|
|Includes Filter Options - Ultra-Fine and Standard Filter||Includes Filter Options - Ultra-Fine and Standard Filter Sets|
|Filters 4000 GPH||Filters 4500 GPH - Powered by dual commercial grade motors|
|2 Year Warranty||Backed by best-in-class 3 year warranty|
|Programmable Weekly Timer - Schedule cleanings every 24, 48, 72 hrs||Programmable Weekly Timer - Schedule cleanings every 24, 48, 72 hrs|
|Anti-Tangle Swivel - Patented 360 Degree Rotation|
|myDolphin Plus Smartphone App|
|Advanced Scheduling Options - Program Sigma to run on specific days and times every week.|
|Gyroscopic Sensors - Groundbreaking technology allows Sigma to clean better than ever before|
Explorer E20 does not include
Sigma® does not include
|myDolphin Plus App|
|No Waterline Cleaning - Does not clean tileline, waterline, or scumline|
|No 3 Year Warranty - 50% shorter warranty|
|No Remote Control Capability|
Dolphin Explorer E20
|myDolphin Plus App|
|3 Year Warranty|
|myDolphin Plus App|
|3 Year Warranty|
Head To Head Review Analysis
Both are designed to clean and scrub your pool's floor. However, only the Dolphin Sigma cleans your pool walls and waterline. The Dolphin Explorer E20 won’t be able to climb the walls and will only clean the pool floor. This part of the swimming pool is vulnerable to dirt, grime, and algae buildup and accumulate. While other cleaners fall from the wall, waterline cleaning allows the robot to stay firmly planted against the wall all the way to the top. If your robot doesn't reach and clean the scum line, you'll still need to manually brush the pool afterwards each clean.
For the first time ever, the Dolphin Sigma's Dual Control Stabilizers and advanced microprocessor enable precise control and positioning of the robot. Thanks to these triple commercial grade motors, gyroscope, and dual stabilizer, the Dolphin Sigma cleans with more precision and power than previous generations of pool cleaners. The dual stabilizer acts as a counterbalance so the Sigma can effectively cling to the pool walls and waterline and even doubles as a handle. This allows Sigma to clean your pool floor, walls, and waterline (also called the scum line).
The Dolphin Explorer E20 only covers the pool floor, missing the walls and waterline entirely. While it will clean your pool floor, it will be unable to clean you pool walls and waterline.
Filters are one of the most important parts of a pool cleaner. A true robotic pool cleaner doesn't just vacuum, but scrubs away and filters out microscopic particles in your water. Dolphin's ultra-fine filter captures what the standard fine filter can't, such as sand and microscopic algae, while still picking up leaves, twigs, and even small bugs.
Breaking down each of their filter options, the Dolphin Sigma® includes 2 filter sets: ultra-fine Filter Cartridges and the standard filters. The Dolphin Explorer E20 includes only one filter option, the standard filter, but won't include the ultra-fine Filter. The ultra-fine Filter helps filter your pool water and removes small, microscopic algae, debris, and bacteria from your pool. The Explorer E20 comes with one filter option included. While, the Dolphin Sigma® includes 2 Filter Cartridge Sets: ultra-fine and Standard. This gives you the ability to swap filters based on your pool's needs. If you need to clean up regular debris and leaves, you can use the fine filter cartridge. If your pool has lots of sand, algae, or even cloudy pool water, use the ultra-fine cartridges to filter and clean your pool.
The Dolphin Sigma includes:
- Standard Cartridge Filter Set
- ultra-fine Cartridge Filter Set
The Dolphin Explorer E20 includes:
- Standard Cartridge Filter
Ease of Use
Both robots are super simple to set up and use. To get started, simply plug the power supply into an outdoor outlet, plug the unit into the power supply, drop the unit into the water, and press start. Both robots have a weekly timer with options for daily, every other day, and every three-day cycles. The Dolphin Sigma is controlled via the myDolphin Plus App, while the Explorer E20 can be programmed via the power supply. Only the Sigma has the ability for Advanced Scheduling, which allows the robot to be set to run on specific days and times every week. So, if you want to clean Monday at 5pm and Saturday at 10am, it is as easy as the touch of a button – giving you the true automatic pool cleaner experience.
myDolphin Plus App
Only the Dolphin Sigma includes the myDolphin Plus App – which allows you to control the robot over Wi-Fi from anywhere. The myDolphin Plus app is available for both Apple and Android products. If you don’t have the ability to use Wi-Fi, the Sigma can still be used via a Bluetooth connection. Dolphin Sigma has Advanced Scheduling – which allows you to set the Sigma to run on specific days and times, giving you complete control. Giving you the ability to clean at 5pm Monday night while cleaning 10am on Saturday. Sigma knows and records distance travelled, time spent cleaning, gallons filtered, and kilowatts saved. The Sigma even has the Manual Drive, where you can remote control the robot right from the app. The Dolphin Explorer E20 doesn’t have the myDolphin Plus app and lacks these features.
Only the Dolphin Sigma includes Maytronics’ patented anti-tangle swivel, which helps minimize cord tangling. The Tangle Free Swivel from Maytronics allows the robot to rotate 360 degrees without your cord getting tangled. Without it, the Explorer E20's cord can get tangled and caught up in your pool – leaving a tangled mess.
A Warranty is one of the most important aspects of a pool robot. With Maytronics manufacturer warranty, the Dolphin Sigma and Dolphin Explorer E20 are both fully covered. Maytronics' limited warranty isn't pro-rated or limited to hours/cycles. The Dolphin Sigma has a 50% longer warranty compared to the Explorer E20. The Dolphin Sigma includes a 3-year best-in-class warranty, while the Dolphin Explorer E20 only has a 2 year warranty.The Sigma® offers a longer warranty: 36 months (3 years) compared to the Explorer E20' 24 month warranty (2 years). The Dolphin Sigma provides 12 more months of coverage when compared to the Dolphin Explorer E20
Which is the better pool robot?
When comparing the Sigma to the Dolphin Explorer E20, the Dolphin Sigma has triple commercial-grade motors, a gyroscope, better pool coverage with waterline cleaning, a Dual Stabilizer, ultra-fine filter set, and a 50% longer warranty when compared to the Dolphin Explorer E20. If you want an automatic pool robot that does it all, the Dolphin Sigma may be for you.
|# of Filters Included:||1||2|
|Filter Cleaning||Top Access||Ultra-fine and Standard Filter Cartridge sets|
|Cleaning Coverage||Floor and Walls||Floor, Walls, Waterline|
|Cleaning Cycle||2 hours||2.5 hours|
|Number of Brushes||1||4|
|Cable Length||50 ft||60 ft|
|Pool Types||In Ground||In Ground|
|Maximum Pool Size||33 ft||50 ft|
|Pool Shape||Rectangle, Oval, or Freeform||Rectangle, Oval, or Freeform|
|Obstacles||Steps, Ladder, Drain Cover, Ledges, Pop-Ups||Steps, Ladder, Drain Cover, Ledges, Pop-Ups|
|Surface||Gunite, Fiberglass, Vinyl, Liner||Concrete, Plaster, Gunite, Pebble, Tile, Vinyl Liner, Fiberglass|
|Automated Weekly Timer||Yes||Yes|
|Remote operation||No||Yes - Through App|
|Warranty||2 Years||3 Years|