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

💧300 gallons mineral-free water

🔋Battery-powered purity indicator

🛠️Replaceable 20-inch resin cartridges

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537.33 OMR

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Description

💦 Wash smarter, not harder—spotless perfection on the go!

SAVE TIME MONEY - No towel drying needed—cut your cleaning time and protect your vehicle’s finish.
PORTABLE POWERHOUSE - Rust-resistant rolling cart for easy mobility and storage—clean anywhere, anytime.
PRO GRADE PURITY CHECK - Battery-operated water purity indicator ensures flawless results every time.
VERSATILE VEHICLE CARE - Perfect for cars, motorcycles, boats, planes, and even solar panels—one system, endless uses.
EFFORTLESS SPOTLESS SHINE - De-ionized water eliminates hard water spots—just wash, rinse, and walk away.

The Spotless Water Systems DIC-20 delivers up to 300 gallons of mineral-free, de-ionized water using two replaceable 20-inch resin cartridges. Mounted on a durable, rust-resistant rolling cart, it’s designed for easy portability and storage. Equipped with a battery-powered water purity indicator and all necessary accessories, this system eliminates hard water spots on vehicles, windows, and solar panels—allowing you to air dry without streaks or residue.

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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