Review summaries: Polaris ERA 842 Smart Robotic Pool Cleaner, Corded

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Great Pool Cleaner, Major Upgrade

This pool cleaner is a great option and represents a significant upgrade over a five-year-old model that had stopped working. It delivers strong cleaning performance and is a worthwhile replacement for an older unit that has failed.

Pros

• + great cleaning performance
• + significant upgrade over older model

AI-assisted summary of a verified Amazon customer review. · June 27, 2026 · United States Read original on Amazon ↗

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Reliable wall-climbing performance, but servicing is hard to find

This corded robotic pool cleaner is the fourth unit of this brand owned over 19 years, chosen because other brands do not climb and clean walls as effectively. It is lighter than cordless models and does not lose power or WiFi connection. Setup and cleaning are easy. A drawback is the difficulty of finding a place that services these units. When they work, performance is described as impressive.

Pros

• + climbs and cleans walls effectively
• + lighter than cordless models
• + does not lose power or WiFi connection
• + easy to use and clean

Cons

• − difficult to find servicing

AI-assisted summary of a verified Amazon customer review. · May 31, 2026 · United States Read original on Amazon ↗

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Strong Pool Cleaner With Useful App Control

The Polaris 842 cleans more effectively than previous Dolphin models, needing only one roughly 2.5-hour cycle to finish the job, whereas the Dolphin required two or three runs. The app with remote control is very useful, and the Easy Lift Removal System is a great feature. The filter is easier to clean, and the unit is lighter than earlier pool cleaners. It is considered worth the extra cost for the value it provides.

Pros

• + cleans in one cycle
• + app with remote control
• + Easy Lift Removal System
• + easier filter cleaning
• + lighter than previous cleaners
• + good value for the price

AI-assisted summary of a verified Amazon customer review. · July 5, 2026 · United States Read original on Amazon ↗

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Lift feature works well; fine debris filtration is limited

The LIFT function expels water so the robot floats to the surface for easy removal. Bottom cleaning is adequate but not exceptional because the fine mesh screen lets fine debris pass. The one-and-a-half-hour timer must be reactivated to keep the robot moving. It may be worth considering an additional filter screen to capture fines without disrupting water flow.

Pros

• + LIFT function expels water and floats robot to the top for easy removal
• + Bottom cleaning is adequate

Cons

• − Fine mesh screen does not capture fine debris well
• − One-and-a-half-hour timer must be reactivated to keep the robot moving

AI-assisted summary of a verified Amazon customer review. · September 8, 2026 · United States Read original on Amazon ↗