PolarisVac-Sweep 3900 Sport Pressure Inground Pool Cleaner, Triple Jet Powered, with a Dual Chamber SuperBag for Debris

This is fantastic unit. Like having your own pool guy who quietly maintains your pool while you do better things. Have had it almost a year now and cant remember the last time we had to scrub the side walls or bottom of the pool. It climbs the sides and steps easily. Read and follow set up instructions carefully measuring pool size and area to clean and it will work perfectly.

8For 30 years I used and maintained an Arneson Pool Sweep until March of this year. Parts being impossible to find and no one alive that knew how to repair them, I finally decided to cough up the big bucks and make a change.After speaking to a technical friend, with a pool, asking what he used, he said for the last 3 years he had used a 3900 Sport with no problems. Researching Amazons reviews, I was alarmed by many of the responses. So I called Polaris' Bonnie Shaw directly at 760.230.2424 and asked her about these reviews.She informed me that when this product came out there were some technical problems that were addressed and fixed and that new units were performing as advertised. She assured me that I should have no problems as long as the current model was used.On her recommendation, and that I my friend, I purchased and installed the new unit and within 3 hours my pool was spotless and the unit worked as represented.I have a large 35,000 gallon pool in the configuration of an offset figure eight, the shallow end being shallow enough for most 5 year olds to be above water, and the diving end being 9.5 feet deep. I followed the instructions on cutting lines and measuring rotations. NO Problems and easy to do. The only adjustment I need to make is in the tail which does not sweep. I have not been able to do the complete adjustment yet, due to the temperature and rain in our area over the past few weekends. No matter, It still cleans everything but some narrow steps. To date, I am thrilled and would buy this again and will recommend it to anyone.I am over 70 and have arthritis in my back and knees and if I can do this, anyone can do this. At this point I believe that most of the bad reviews are from people who didn't read and/or use the instructions properly, or are from misleading competing products. As time goes on, I will comment on my own review, if any problems occur or if the status quo is maintained.**UPDATE ** 3 years later,, Everything running at normal...P00l spotless and the only thing I have done is replace the bag when a stick was picked up and tore the bag. I also replaced the sponge end. I can't recommend a product enough.Old Tex

This pool cleaner is awful. It is the second Polaris cleaner that I've bought and I mistakenly believed that the cheaper one I had (the Polaris 280) would be outperformed by buying this cleaner. Even though I have adjusted the thrust jet in all different ways and checked the wheel RPM, this unit gets hopelessly and forever stuck in parts of my pool and will stay there for hours/days if I don't unstick it. It frequently ends up on its side, traveling on the wheels which means it picks up no debris as it moves around the pool. I am very worried that as it gets stuck in one place for such long periods of time that is wearing down the surface of my pool in the location it is stuck. Both Polaris cleaners I have did this. The cleaner also gets tangled on its cord which has the effect of getting it stuck in one place and the bag got stuck in the wheel drive and ripped. The bags are really expensive. I am deeply disappointed in the product and Polaris's support of it. They've advised me to take it to a dealer but I bought the unit new and it's been exhibiting this behavior since I bought it. I wanted a refund and for them to take the product back to which they refused. Do NOT spend the money for this product. It could ruin your pool and Polaris won't take any responsibility for it.

Update 10/4/2023: Manufacturer replied to my email and is sending a replacement disconnect in 7-10 business days. Still glad I purchased a replacement as I will have a backup for when this one fails (also can't go that many days without cleaning the pool this time of year).I purchased a new 3900 Sport on September 25th. Installed it on September 26th. Worked fine until September 30th when the quick disconnect fitting came apart causing pressure loss to the 3900. Tried to contact product support on two separate occasions by phone and also by email. Was told by phone to contact Amazon. Only option I could find on amazon was to return entire Polaris cleaner and request replacement. I ended up purchasing new quick disconnect fitting on amazon. Other than problem with quick disconnect fitting and customer service the cleaner works great.

I received this very quickly after I ordered it. I replaced my previous Polaris which had worn out. It was an easy install. I had to trim the feeder tube down a little bit since I have a small pool, but it was easy with scissors. The quality of the cleaning on the new unit is excellent. You may have to adjust the angle of the nozzle on the bottom of the unit so that it goes up the walls properly. Otherwise, it tends to gets stuck easily. The automatic reverse capability on the device is really nice because it keeps it from getting stuck as well. It is on a timer and every few minutes it will reverse the unit in case it is stuck against a wall or in an awkward location.

Tail won't wag, doesn't clinbe the walls.