Nu Cobalt 731-i: Honest Review

Key Features That Stand Out

The Nu Cobalt 731-i Automatic Pool Robot Wall Climber for Medium to Large In Ground Pools boasts several impressive features that set it apart:

• No need to vacuum: This revolutionary robot cleans and brushes both the floor and walls of your pool, eliminating the need for manual vacuuming.
• Recommended for medium to large in-ground pools: It’s specifically designed for pools up to 20’ x 40’ x 8’ deep, making it suitable for most backyard swimming areas.
• Two hours timer with auto shut off: Enjoy a hands-off cleaning experience with a programmed cycle that automatically shuts off after two hours.
• Direct-drive motor: This provides greater traction for effective climbing and enhanced serviceability.
• All surface cleaning: It’s compatible with various pool surfaces including vinyl liner, fiberglass, and concrete pools.
• Quick-drain system: This feature makes removing the robot from the pool effortless, as it becomes lightweight once drained.
• Extra-large pleated filter bag: Captures a significant amount of debris, including fine particles.
• 50′ power cord with diagnostic NO-TWIST swivel: Offers ample reach and prevents cord tangling, a common annoyance with pool cleaners.
• Brush-to-port suction: This powerful suction system thoroughly vacuums acorns, leaves, and fine debris.
• One year limited warranty: Provides peace of mind with a manufacturer’s guarantee.
• ETL, CSA and CE approved: Meets strict safety and quality standards.

Nu Cobalt 731-i Automatic Pool Robot Wall Climber for Medium to Large In Ground Pools

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What We Like

Based on its advertised features, the Nu Cobalt 731-i Automatic Pool Robot Wall Climber for Medium to Large In Ground Pools offers several compelling advantages for pool owners:

• Comprehensive Cleaning Power: The ability to clean both the floor and walls without manual intervention is a significant time-saver and labor reducer.
• Universal Surface Compatibility: Knowing it works across vinyl liner, fiberglass, and concrete pools means broader applicability for different pool types.
• User-Friendly Design: The automatic shut-off timer and quick-drain system contribute to a hassle-free operation and easy removal from the water.
• Effective Debris Removal: The combination of brush-to-port suction and an extra-large pleated filter bag suggests it can handle a wide range of debris, from large leaves to fine dust.
• Tangle-Free Operation: The NO-TWIST swivel on the power cord is a crucial detail that addresses a common frustration with robotic pool cleaners, ensuring a smoother cleaning cycle.

Performance Analysis

The Nu Cobalt 731-i Automatic Pool Robot Wall Climber for Medium to Large In Ground Pools appears engineered for efficient and thorough pool cleaning. Its direct-drive motor is a key component, providing the necessary power for the robot to effectively climb walls and maintain consistent traction across various pool surfaces. The 50′ power cord with its NO-TWIST swivel is a thoughtful addition, allowing for coverage of larger pools without the constant hassle of untangling the cable. The brush-to-port suction mechanism is designed to powerfully draw in debris, from larger items like acorns and leaves to smaller, finer particles, which are then captured by the extra-large pleated filter bag. The two-hour timer with auto shut-off offers a convenient, set-it-and-forget-it operation, simplifying the cleaning process for the user. The quick-drain system is a practical element, ensuring that once the cleaning cycle is complete, the robot is easy to lift out of the water and handle. Its approval by ETL, CSA, and CE standards indicates a commitment to safety and reliability.

Best For

This pool robot is an ideal solution for several types of pool owners:

• Busy Homeowners: Those who want to minimize the time spent on pool maintenance and maximize their enjoyment of their pool.
• Owners of Medium to Large In-Ground Pools: Specifically designed for pools up to 20’ x 40’ x 8’ deep, it’s well-suited for standard residential backyard pools.
• Pools with Mixed Debris: The powerful suction and large filter bag are capable of handling everything from large leaves and acorns to fine dust and sand.
• Owners of Various Pool Surfaces: Its compatibility with vinyl liner, fiberglass, and concrete pools makes it a versatile choice.
• Individuals Seeking Convenience: The automatic timer, self-propulsion, and easy removal features cater to users who prioritize a hassle-free experience.

Buying Guide

When considering a robotic pool cleaner like the Nu Cobalt 731-i Automatic Pool Robot Wall Climber for Medium to Large In Ground Pools, several factors are important to ensure you make the right choice for your needs.

Key Features to Look For

• Cleaning Scope: Does it clean the floor only, or does it also climb walls and reach the waterline? The Nu Cobalt 731-i excels here by cleaning both floor and walls.
• Filtration System: Look for efficient filter bags or cartridges that can capture fine debris as well as larger particles. An extra-large pleated filter bag, like the one featured, is a significant plus.
• Cord Management: A swivel or anti-tangle cord is essential to prevent frustration and ensure continuous operation. The NO-TWIST swivel on the 50′ cord is a great feature.
• Ease of Use and Removal: Features like automatic timers, quick-drain systems, and lightweight designs make operation and maintenance much simpler.
• Surface Compatibility: Ensure the cleaner is designed for your specific pool type (e.g., vinyl, fiberglass, concrete). This model is versatile, working on all surfaces.
• Timer Functions: Programmable timers allow for scheduled cleaning, saving you manual effort. The two-hour auto shut-off is a standard, useful feature.
• Warranty and Certifications: A good warranty and safety certifications (like ETL, CSA, CE) offer peace of mind.

Important Materials

While specific material compositions are not detailed in the provided features, robotic pool cleaners typically use durable, UV-resistant plastics for their external casings to withstand pool chemicals and sunlight. Internal components are designed for water resistance and longevity.

Essential Factors to Consider

• Pool Size and Shape: Ensure the robot’s cord length and cleaning capacity are suitable for your pool’s dimensions. The Nu Cobalt 731-i is recommended for pools up to 20’ x 40’ x 8’ deep, making it suitable for many medium to large pools.
• Type of Debris: If your pool frequently accumulates large debris like leaves and acorns, a robot with powerful suction and a large capacity filter is crucial.
• Wall Climbing Capability: For a truly hands-off experience, a wall-climbing function is highly desirable, which this model offers.
• Maintenance Requirements: Consider how easy it is to clean the filter bag and perform routine maintenance. The quick-drain system simplifies this aspect.

Budget Planning

Robotic pool cleaners represent an investment in convenience and pool cleanliness. Prices can range from a few hundred dollars for basic models to over a thousand for high-end units with advanced features. The Nu Cobalt 731-i falls into a competitive segment, offering a good balance of features for its price point, especially considering its wall-climbing capability and comprehensive cleaning. Plan to budget in this range for a reliable and effective unit.

When to Buy

The best time to purchase a robotic pool cleaner is often before the peak swimming season begins, typically in late spring or early summer. This allows you to have your pool in pristine condition from the start. However, if you’re experiencing persistent issues with pool cleanliness or find yourself spending too much time cleaning, purchasing at any time can significantly improve your pool enjoyment. Keep an eye out for seasonal sales or promotions.

Frequently Asked Questions

What types of pool surfaces can the Nu Cobalt 731-i clean?

This pool robot is designed to clean all surfaces, including vinyl liner, fiberglass, and concrete pools.

How long does a cleaning cycle typically last?

The robot features a two-hour timer with an auto shut-off, meaning a standard cleaning cycle will run for up to two hours.

Is the power cord likely to get tangled in the pool?

No, the 50′ power cord comes with a diagnostic NO-TWIST swivel, specifically designed to prevent tangling during operation.

How easy is it to get the robot out of the pool after cleaning?

It features a quick-drain system, which allows the robot to become lightweight for easy removal from the water.

What kind of debris can this robot effectively vacuum?

It’s designed for thorough vacuuming of acorns, leaves, and fine debris, thanks to its brush-to-port suction and large filter bag.

Does the Nu Cobalt 731-i require a separate pump or booster pump?

Based on the provided information, it operates independently and does not require an external pump system.

What is the warranty period for this pool robot?

The product comes with a one-year limited warranty for your peace of mind.

Final Thoughts

The Nu Cobalt 731-i Automatic Pool Robot Wall Climber for Medium to Large In Ground Pools presents itself as a robust and efficient solution for pool maintenance. Its ability to clean both the floor and walls, coupled with its compatibility across various pool surfaces, makes it a versatile choice for many homeowners. The inclusion of a NO-TWIST swivel cord and a quick-drain system addresses common user frustrations, highlighting a thoughtful design focused on convenience. For those looking to reclaim their weekends and enjoy a consistently clean pool without the manual labor, this model appears to be a solid investment. Its features suggest it can handle a good range of debris, from large leaves to fine dust, contributing to a healthier and more inviting swimming environment.