Main trade-off
Dolphin Nautilus CC Plus with Wi-Fi
It cleans walls but not the waterline.
Head-to-head
Dolphin CC Plus Wi-Fi vs Polaris ERA 842: Dolphin prioritizes fine media, Polaris adds canister room and Easy Lift
The short answer
The Dolphin is the finer-filtration pick for a pool within 40 feet. The Polaris brings a 60-foot cable, four-liter canister and Easy Lift for a larger, leafier pool.
Before you choose
The reasoning and the trade-offs
The needs that actually separate these two
Dolphin Nautilus CC Plus with Wi-Fi has the stronger fit for “Fine dust, sand or dead algae settles in my pool”. Polaris ERA 842 Smart has the stronger fit for “My pool is large or close to 50 feet” and “Leaves and larger debris are the main problem”.
What this is based on
This compares the current strong and useful fit assignments for the exact products. It does not turn them into one overall score.
Main trade-off
Polaris ERA 842 Smart
It is a corded cleaner with deck-side storage needs.
Dolphin Nautilus CC Plus with Wi-Fi
- Choose it for
- Fine debris is common.
- Your pool is no longer than 40 feet.
- Main trade-off
- It cleans walls but not the waterline.
Polaris ERA 842 Smart
- Choose it for
- Cable reach is critical.
- Leaf capacity matters.
- Main trade-off
- It is a corded cleaner with deck-side storage needs.
About this comparison
Compare two connected corded wall cleaners on filtration, retrieval and cable reach.
The practical choice turns on cable reach and filter, then on the constraints in your own setup.
Winner by situation
Start with what you need it to do
Fine dust, sand or dead algae settles in my pool
For filter, Dolphin Nautilus CC Plus with Wi-Fi records “Ultra-fine top basket” and Polaris ERA 842 Smart records “4-liter canister”. This identifies what the treatment path is built to capture or reduce and what recurring care it requires.
- Dolphin Nautilus CC Plus with Wi-Fi
- Better fit
- Polaris ERA 842 Smart
- Depends
My pool is large or close to 50 feet
For cable reach, Dolphin Nautilus CC Plus with Wi-Fi records “For pools up to 40 ft” and Polaris ERA 842 Smart records “60 ft cable”. This affects working reach and where the main unit or power source must stay during use.
- Dolphin Nautilus CC Plus with Wi-Fi
- Good
- Polaris ERA 842 Smart
- Better fit
Getting the robot out of the water should be easy
Its parking or retrieval feature can bring it within reach. Check any time window and the remaining wet lift.
- Dolphin Nautilus CC Plus with Wi-Fi
- Good
- Polaris ERA 842 Smart
- Better fit
I want fewer stops to empty the filter
A larger nominal basket provides more collection space. Debris size, filter loading and cleaning mode determine when it needs attention.
- Dolphin Nautilus CC Plus with Wi-Fi
- Depends
- Polaris ERA 842 Smart
- Better fit
I want to guide it toward a missed spot
Check the supported mode and connection state before relying on remote direction. Some models only respond at the surface.
- Dolphin Nautilus CC Plus with Wi-Fi
- Depends
- Polaris ERA 842 Smart
- Better fit
Leaves and larger debris are the main problem
Its intake and debris canister have useful capacity for leaves and twigs.
- Dolphin Nautilus CC Plus with Wi-Fi
- Depends
- Polaris ERA 842 Smart
- Better fit
What matters in practice
The differences that matter
The needs that actually separate these two
Dolphin Nautilus CC Plus with Wi-Fi has the stronger fit for “Fine dust, sand or dead algae settles in my pool”. Polaris ERA 842 Smart has the stronger fit for “My pool is large or close to 50 feet” and “Leaves and larger debris are the main problem”.
How we reached this conclusion
This compares the current strong and useful fit assignments for the exact products. It does not turn them into one overall score.
The selected needs do not separate this pair
Both products cover the same 3 of 3 buyer requirements attached to this comparison. The choice moves to “cable reach” and “filter”.
How we reached this conclusion
This checks the two products against the same selected needs, then names the first verified differences that remain.
Finding models for “I want controls and status in an app” and “I prefer corded power without a battery deadline”
6 of 27 checked robot pool cleaners cover both “I want controls and status in an app” and “I prefer corded power without a battery deadline”. Both products are in that group.
How we reached this conclusion
The count is reproduced by filtering the current category dataset for products with a strong or useful fit for both needs.
Choice A
Dolphin, 99996409-PCI
Nautilus CC Plus with Wi-Fi
A connected two-hour cleaner for buyers who want proven wall cleaning and app scheduling.
- Best matched use
- Medium in-ground pools where app control matters but waterline scrubbing does not
Checked facts
- The current US page rates it for pools up to 40 feet.
- It uses a two-hour floor and wall cycle.
- MyDolphin Plus control, a swivel cable and an ultra-fine top-load basket are included.
Choice B
Polaris, FERA842
ERA 842 Smart
A connected ERA model with selectable zones, scheduling and Easy Lift retrieval.
- Best matched use
- A 60-foot-cable Polaris setup with app scheduling and easier water removal
Checked facts
- It uses a 60-foot swivel cable and four-liter canister.
- iAquaLink adds scheduling and remote cycle control.
- Easy Lift, a caddy, a cover and front-and-rear brushes are included.
Meaningful differences
What changes the fit
| What changes | Dolphin Nautilus CC Plus with Wi-Fi | Polaris ERA 842 Smart | Why it matters |
|---|---|---|---|
| Cable reach | For pools up to 40 ft | 60 ft cable | This affects working reach and where the main unit or power source must stay during use. |
| Filter | Ultra-fine top basket | 4-liter canister | This identifies what the treatment path is built to capture or reduce and what recurring care it requires. |
| App | MyDolphin Plus | iAquaLink | This changes setup and daily operation more than the product's core physical job. |
| Waterline | No | No dedicated mode listed | This changes the hands-on cleaning, filling or disposal work required during ownership. |
What you give up
Every choice has a cost
If you choose Dolphin Nautilus CC Plus with Wi-Fi
- At about 20.8 pounds dry, it takes more effort to lift than the Nautilus CC.
If you choose Polaris ERA 842 Smart
- Polaris describes floor and floor-plus-wall zones rather than a dedicated waterline mode.
What the facts say
What the comparison shows
Useful conclusions from the current robot pool cleaners comparison, followed by the checked facts used to reach them.
Compared set
Only 6 of 27 models checked match every need here: “I need the walls scrubbed too”, “I want controls and status in an app”, and “I prefer corded power without a battery deadline”.
6 matching models from 27 checkedSee the checked facts and calculation notes
Match countThe count uses the current product-to-need assignments for “I need the walls scrubbed too”, “I want controls and status in an app”, and “I prefer corded power without a battery deadline”. A need with no documented match does not count.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Dolphin Nautilus CC Plus with Wi-Fi |
|
| |
| Polaris ERA 842 Smart |
|
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Ready to choose?
Check the price. Read the owner reviews.
Open either model on Amazon to check the current price, customer reviews and delivery options.
Dolphin Nautilus CC Plus with Wi-Fi
Fine debris is common.
See price & reviews on AmazonPolaris ERA 842 Smart
Cable reach is critical.
See price & reviews on AmazonLinks open in a new tab.