Spotless Water Systems - DIW-20, Simple Window, Solar Panel, RV & Car Wash System, Works for All Vehicles, Motorcycles, Bikes, Boats, Planes, Yachts, Towel Drying Eliminated

This exceeded my expectations. I have a black car that I was always chasing water runs on and that is no longer an issue. My PPM went from about 160 to 0. I no longer have to spend so much time drying. I truly get a spot free rinse now. Would absolutely recommend.

Echoing what all others have been saying for years, but this is a game changer. Doing the rinse with DI shaves off so much time in regular washes and not having to worry about chasing drips with a towel for hours is almost life-changing. I have low ~100PPM TDS muni water with hopes the resin will last and will likely be quick to get the rv-mods conversion to remove the need for the spotless cartridges, but we'll see how long this lasts as I lock down my optimal rinse time.

Expensive, yes. Expensive to maintain, yes. However, this is a very well made product and works as it should. I use it purely as a spot free rinse with the included hose end sprayer. This takes all the stress of trying to hurry up and clean then dry a vehicle away. Likewise, trying to deal with annoying hard water spots is now a thing of the past. I have very hard water (350-400 tds) and so far I’m at 4 rinses on an average sized SUV with the meter still reading 0 tds. Mounted this to a 2x4 with sufficient width to then screw it into studs which are 16” on center.

The system works really well — leaves cars and windows spotless without having to towel dry. Build quality feels solid and water flow is strong. My only complaint is that swapping out the resin is a bit tedious and messy. Still, it’s a great investment for anyone who washes cars or glass surfaces regularly and wants professional results at home.

If you want the Fiji water for your car, then this is it.

Not sure how many washes I'm gonna a get out of this before I need to replace the filters, but seeing as I only use it for the final quick rinse, it should last a few months from what I've heard. Foamed, cleaned and rinsed my car. Then ran the water thru spotless for the final quick rinse. Left the car out in the Florida sun without drying it. It dried to perfection. Not a single water spot Not even on my windows which I always have to come behind and clean to wipe away the hard water spots. Great product. Man I hope these filters last a while because I would hate to have to spend $100+ a month exchanging them. Great product!!

Although I only have six washes with this, it does a superior job of doing a spot-free rinse. I'm on a well and have very hard water. Even with a water softener, my TDS count is 198 ppm. This system brought the count to 0. As long as I get the water into all of the nooks and crevices of my truck, this gives a perfectly spot-free finish without having to towel dry.

The company has great customer service, (Linda, Jose is awesome) They do sell a bypass set up so you don't have to run the filter constantly. It is way less than running ball valves. Go to there web site, it will tell you haw many washes you can get out of the filters before the resin needs to be replaced. You give them your zip code and tell them regular hose or pressure washer and it calculates how many uses.

I was missing 2 parts that screw into the input and output of the unit, but bought them as home depot, so no problem there, but when I installed it and washed my car I noticed the TDS was at 224. Was supposed to be bascially ZERO, the unit comes with a TDS monitor, and I was told by a plumber that this much resin probably cleaned the first 3 gallons that wen though the unit, but after that I needed new resin already LOL, DONT BUY IT !!!

Two parts #7 missing in sealed bag and cannot install Unit without them Called Manufacturer and was promised the parts Been waiting for 10 days - nothing

Missing the two #7 parts in the sealed bag cannot install.