Having a swimming pool in the property is every house owner’s dream. But, every luxury requires maintenance and so does a swimming pool. If you are looking for a pool cleaner online then you are sure to come across Polaris P39 Vs 3900 – two amazing cleaning models from Polaris.

But, the question is – which is better of the two? Would you prefer to invest in the Polaris 3900, or go for the comparatively cheaper Polaris P39? We know that it’s perplexing for an average customer to choose between the two, hence our review team is here for the rescue.

We have spent several hours studying the two different models extensively to take note of the smallest to the biggest differences between the two.

Difference Between P39 and 3900

After a close review and careful analysis, we found that there’s a thin line of difference between the two models. The P39 was exclusively built with a white body, while the P3900 is more like the actual cleaner.

While some people believe that P3900 has better ballast, others feel that it is almost the same. Another point of difference comes in the form of warranty – P39 offers an extra year of warranty, which is anyways cheaper than the P3900.

The Polaris 3900 is a new, improved, and marked upgrade from the P39. It features a completely re-engineered design with some sophisticated features. It is capable of producing more vacuum power and drives a higher torque for faster cleaning.

For a clearer understanding of the difference between the two, let’s take a look at the detailed review of both the products given below:

#1. Polaris P39 Pressure-Side In-Ground Pool Cleaner

The Polaris P39 (see Amazon) encompasses the utmost power of any Polaris pressure cleaner, supplemented by the pool’s efficient filtration system. It is capable of circulating about 40 gallons of dirty water to filter it through the bag every minute to remove the debris and leave the swimming pool looking fresh and clean.

about 40 gallons of dirty water to filter it through the bag every minute to remove the debris and leave the swimming pool looking fresh and clean.

This also helps in maintaining a uniform temperature throughout the pool, besides a much clearer and cleaner water body. It also features a complete wheel PosiDrive system coupled with a sturdy stainless steel chain to deliver a comparatively better performance and speed.

The pool cleaner also comes with a zippered SuperBag with two chambers to easily pick up more dirt and accumulates the debris for less frequent cleaning. It also includes an advanced TailSweep PRO hose enhancement capable of blowing the debris out of corners and even get to the hard to reach places.

What we like:

  • Suitable for all in-ground pools
  • Uses Separate Booster Pump
  • Covers the pools floor, walls, and steps
  • Comes with an unobstructed vacuum inlet

What we don’t like:

  • Dual-chamber bag is difficult to clean
  • Tail sweep does not swing from side to side

Customer/ user reviews

Most users are impressed with the performance of the pool cleaner that renders the swimming pool clean, plus the bag is easy to remove and wash. Customers are happy that this new Polaris cleaner comes with a vacuum suction power that helps in removing dirt and debris. However, some people have warned that the unit loses its suction power after some time.


This is a solid pool cleaning unit that does what it says and delivers exceptional performance.  It is easy to put together and once connected, it does its job incredibly well. At this price, it also offers a solid warranty and customer service.

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#2. Polaris Vac-Sweep 3900 Sport

This is an advanced Polaris 3900 Sport (learn more) that comes with an unsurpassed vacuum power, convenience, and power to perform. It retains all the time-proven and classic features of Polaris, and blends them with the contemporary abilities that include innovative new enhancements.

Outfitted with a dual-chamber SuperBag, the Polaris 3900 is capable of picking and storing more debris, to make it easy and less frequent to clean. It also comes with a unique auto-reverse technology that enables it to get free if stuck. It comes with a TailSweep PRO, which is an advanced sweep hose enhancement to eliminate debris from corners.

Powered by a booster pump (sold separately, such as the PB4-60), the 3900 Sport has the most vacuum power of any cleaner.  It can filter out the largest debris and dirt particles while circulating water to give you a cleaner pool in less time. Users can use the 3900 Sport with the PB4-60 booster pump to enjoy the best results.

What we like:

  • It works in all in-ground pools
  • Debris bag capacity is 5 liter
  • Most vacuum power of 3-jet Polaris cleaner
  • Comes with a 31-feet feed hose, black in color
  • 50% more torque with PosiDrive system

What we don’t like:

  • Hose connections come out loose

Customer/ user reviews

Users are impressed with the unique and advanced design of the pool cleaner that makes it one of a kind. People have also mentioned how easy it is to assemble the unit and use it, plus the results are also equally appealing. A few users are not happy with the black color of the hose, but it does not impact the performance in any way.


The Polaris 3900 Sport boasts a re-engineered body design geared to woo the customers and it has well planned and sophisticated features to get the job done perfectly. Everything about the pool cleaner is designed to help you get the job done perfectly.

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Final Verdict

While both the Polaris P39 and 3900 look almost the same despite some change in exterior color, there are subtle changes in features that make the later more advanced and sophisticated of the lot. Overall, we feel that if you are more concerned about the warranty then go with the Polaris P39, but for innovation and expertise, we would recommend the Polaris 3900.

See Also:
8 Best Vacuums For Above Ground Pool
5 Best Pool Brush For Pebble Tec
4 Best Pool Skimmer For Dog Hair

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