Do you sell, or at least recommend, A pre filter to extend the life of the deionizer?

Hello, Thank you for your question. There really isn't a pre filter that will make a big enough difference. The only thing that will really extend the resin life is a RO filtration. Warm regards, Customer Service Water System

is this something you can use for your household drinking water? if not can someone suggest what to use or point me in the right direction?

Depends what your concerns about your water are.You can look at a dechlorinator which will remove most chlorine and other chemicals via charcoal but leaves the minerals.Or you can look at Reverse Osmosis which does what the dechlorinator does plus removes minerals.We have extremely hard water here (800 ppm, avg is about 150 ppm) so I use RO for drinking, tea, juice, coffee, etc. plus I use RO as the final rinse for my vehicles.

Do you have to empty and rinse after each use ?

Good afternoon Jan,No you don't, you don't even have to empty the waster unless you aren't using it for more that 3 wks. You do want to change your resin when your meter is reading 20PPM. So you meter should be reading 0's for about 90-95 % of your resin life. I hope this helps you out.Warm Regards,Josette ShieldsCustomer ServiceCrspotless Water858-530-9993

what is the life expectancy of this unit?

You'll be disappointed if you don't pre filter the water entering this unit. Chlorine alone will exhaust the resin prematurely. I was washing two and half cars before resin exhaustion.

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

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

Product ID: 420933920

Details

Brand
CR Spotless
Capacity
300 Gallons
Material
Stainless
Product dimensions
38.1L x 38.1W
Special features
Portable

⚡solar powered, eco-friendly operation

💧300 gallons spot-free water capacity

🛠️replaceable 20-inch de-ionizing cartridges

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Description

💦 Shine smarter, not harder—spotless water, spotless life!

PORTABLE POWERHOUSE - Rust-resistant rolling cart for easy mobility and storage wherever you need it.
ECO SMART SOLAR ENERGY - Solar-powered system reduces your carbon footprint while delivering pristine results.
VERSATILE VEHICLE CARE - Perfect for cars, RVs, boats, bikes, planes, and even solar panels—shine everywhere.
EFFORTLESS SPOTLESS SHINE - Wash, rinse, and walk away—no towel needed, no spots left behind.
PROFESSIONAL GRADE PURITY - Two 20-inch ion-exchange resin cartridges ensure mineral-free water for flawless finishes.

The CR Spotless Water Systems DIC-20 delivers up to 300 gallons of mineral-free, de-ionized water using dual 20-inch replaceable cartridges mounted on a durable, rust-resistant rolling cart. Solar-powered and portable, it eliminates hard water spots on vehicles, windows, and solar panels, allowing you to wash and air dry without towels or streaks. Designed for all vehicle types and outdoor surfaces, it’s the professional-grade solution that saves time, effort, and money while enhancing your vehicle’s finish and efficiency.

Specifications

ASIN	B072FJTX8X
Best Sellers Rank	#175,228 in Automotive ( See Top 100 in Automotive ) #48 in Automotive Waterless Wash Treatments
Brand Name	CR Spotless Water Systems
Capacity	300 Gallons
Container Type	Dispenser
Customer Reviews	4.3 4.3 out of 5 stars (603)
Global Trade Identification Number	00810102010049
Included Components	Cartridge, Rolling Cart
Installation Type	Freestanding
Item Dimensions L x W x H	38.1L x 38.1W x 63.5H centimeters
Item Type Name	Simplest RV & Car Wash Kit, Spotless Rinse Works for All Vehicles, Motorcycles, Bikes, Boats, Planes, Yachts, Deionized Water System, Towel Drying Eliminated
Item Weight	19.32 kg
Manufacturer	CR Spotless
Material Type	Stainless Steel
Maximum Flow Rate	2.5 Gallons Per Minute
Model Name	CR Spotless
Model Number	DIC-20
Other Special Features of the Product	Portable
Part Number	DIC-20
Power Source	Solar Powered
Purification Method	Ion Exchange
Smart Home Compatibility	Not Smart Home Compatible
Supported Water TDS Level Maximum (PPM)	350
UPC	810102010049
Upper Temperature Rating	90 Degrees Fahrenheit

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