The cost per wash is still high as with all DI systems because they all use up resin and there’s no getting around it at ~$50-75/10lbs. Spend a little more and get a 4 stage RO/DI system. You can build a complete system with filters, hoses, booster pump, water vessel and supporting gauges and flush system for less or about the same as a CR Spotless system but the main advantage is about $.25-$.50 per wash vs. $2.00-$4.00+ per wash depending on your TDS. It’s worth the research and effort. People argue it takes up more space to have a 10 gallonish size holding tank but I find the footprint is about the same as a CR Spotless just taller so no real loss of floor space. I plumbed mine from the basement so no loss of space.
If ur not a detailer there’s no reason for one just get a good drying aid before your last rinse, wash in the shade and a good microfiber towel to dry you’ll be fine.
You can also add a carbon filter as a pre-stage filter before the expensive resin which will almost double its life expectancy if you can chlorine in your water. That’s what I did and was able to get a huge bump in how long it lasts.
$30 bottle of Superior 4 spray wax dilute it with water so it will last you for months. Spray on top of regular car soap then rinse and you'll never have to worry about water spots.
There's a couple of big compromises with that system. Min flow and inability to filter PPM down to a respectable # (less than 10 or so). That's a no go for most places downstream with hard water.
That price is obscene. They are way overcharging for their resin. You should be able to get resin for $50 for 10 pounds and bring the cost way down to around $2.00-3.00 per wash.
Need to measure the TDS of your tap water. That system will chew through your wallet unless you have low TDS. Here it’s like 400 milligrams per liter which is pretty high. Just means your resin will wear out quickly (like after 40-50 gallons).
It’s measured in parts per million or liters per grain. You probably mean 400ppm which is on the higher side and you’re 100% correct. However there’s also things like dissolved CO2 that burns through resin too so a TDS meter won’t tell you that. YYMV on any of the DI stuff. That’s why I do Reverse Osmosis instead.
Terrible flow even only to rinse off the vehicle! The output of the final screw on hose tip which acts a regulator is 0.75 Gallon Per Minute. The flow is not enough for even the cheapest of electric pressure washers. Lease a true di filter tank from Culligan for $250 deposit, and $130/month or 1000 gallons @
The pressure washer would be for your wash cycle before the spot free rinse. More then likely a pressure washer would need a bit more then .75 gallons per minute of water flow
