The rebuild kit makes the cleaner work better. An improvement over the component(s) that came with the original unit. However, it begs the question why the original unit wasn't as outstanding in the first place. We needed to replace the large part after one full year's use (the calendar year made the replacement outside the warranty period). Further, we had to open the original unit several times because the drive chain had fallen off the cogs.
Verified purchase: Yes | Condition: New
Pump is fine, t hid s b B is 2nd rebuild kit for us... 1st worked ok for two seasons... this rebuild kit feels like needs rebuilding...be careful to save all packaging in case you need to return... you may just need new hose or time to junk the Polaris and go with something better. We’re done with trying to save this dead horse... looking at a dolphin or anything but Polaris
Verified purchase: Yes | Condition: New
I can't tell you how many times we've taken the Polaris 3900 Sport into the "shop". It's always one thing or another, never the same thing twice, of course. This Rebuild Kit has made my Polaris run like new again and at 1/2 the price it would have cost at out local Pool Supply store. Well worth the price. Very easy to install too.
Verified purchase: Yes | Condition: New
This is like a fine-tuned racecar. If you think you are going to just drop this in your pool and it will work right out of the box; think again. That having been said, the 3900 is an infinitely variable masterpiece. It will climb steps, walls and effortlessly keep a random pattern that cleaned my pool in about 1-1/2 hours. Once you get the thing adjusted properly it maintains it's settings and then you can just drop it in and let it work. My pool is a 40,000-gallon pool that has many obstacles. The depth ranges from 3 feet to 11.5 feet deep. The 3900 keeps the walls scrubbed and the bottom spotless with no effort on my part. I only use it for about four hours a week and the pool stays clean. I have tried other pool cleaners in this pool without success but this one gets into every nook and cranny. The folks at Polaris really know what they are doing. Read the instructions carefully. Spend the time to adjust the 3900 properly and you will have many happy years with a clean pool.Read full review
Replaces key components of Polaris drive. Unfortunately this rebuild is necessary periodically, a fact of life for Polaris which is designed to wear out after a few years.
Verified purchase: Yes | Condition: New
I purchased this pump to replace the original Polaris boost pump. The pump was a direct replacement with just minor PVC pipe changes to line up as the Polaris water intake was directly in the middle of the pump head rather than offset like this pump. The pump came with a 110/220 volt switch so wiring was easy. The pump is quiet and so far is working as designed. Seems like a good value for the money. I am very satisfied.
Verified purchase: Yes | Condition: New
It is fine as a cleaner but the gears ware out after 3 - 4 years and it will sit in the same spot of your pool until you notice how dirty the pool is. It will happen to your unit also. Polaris could have made robust gearbox but decided against that to sell more parts one may assume. It is very annoying that a piece of plastic this expensive is engineered for obsolescence. So as you think about the brand Polaris just remember to associate it with a brand that wants your money more than your loyalty.
Verified purchase: No
Most all these pool cleaners are somewhat on the expensive side, but you'll get more bang for your buck with this Polaris 3900. Follow the installation instructions, handle it gently (all these cleaners are just a little delicate), place it in the water, turn on the pumps, and watch it go to work. The hose is much superior construction to our old Polaris 360 (really horrible leaky weak hose, do not buy a Polaris 360!), a pleasure to work with, and fun to watch! After a few hours, your pool will be well on it's way to being clean. The filter bag is easy to work with, and the unit as a whole required little adjustment, just turned up the tail sweep a little. With the filter and pumps running properly, our pool is not just clean, it is Crystal Clear! I can now run the pumps for 3-4 hours every day or two, saving us a lot on energy costs. The Polaris 3900 was definitely one of our best pool purchases, it does a superior cleaning job, is not too difficult to set up, and it's easy to work with.... and it's fun to watch! Keep in mind you will need a separate booster pump, and any associated plumbing and electrical if you are installing from scratch. Our pool maintenance is so much easier now, and our chemical costs are also much less . We love our Polaris 3900, and believe you will too.Read full review
This is the only pool cleaner I've found that will pick up sand and roof aggregate ... Don't waste your money on any of the cheaper brands ... IMHO
Verified purchase: Yes | Condition: New
Drastic improvement over our old cleaner. The old one just had a leaf catcher while this one catches leaves and alsomuch finer material preventing this debris from reaching the filter cartridges. My only complaint is with removing the debris. The sock wraps around the hose with Velcro strips to keep it in place... there are two zippered pouches on either side. This may be effective but emptying and cleaning is a hassle. They need to come up with a better design.
Verified purchase: Yes | Condition: New
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