5 Best Water Deionizer for Car Washing in 2022

Your car is filthy, and it needs to be cleaned. But there are all types of options for cleaning your car so you don’t have to spend hours scrubbing or washing the entire vehicle by hand.

You have read about water ionizers online but no one has explained what they actually do well enough because most articles focus on why they work instead of how exactly they work which makes them sound like a magic bullet that will solve all your problems without any effort.

This article will give you all the information you need on what an authentic water deionizer is, its benefits to your car washing routine, and the best models available.

Car cleaning may be a dreadful experience. When you use a car wash to clean your automobile, you are losing the natural oils that help keep it clean and free of dirt and grime. Although most coated or chemically treated car wash detergents may adsorb and remove oils from the car’s surface, you should still utilize a wonderful, natural, and safe car wash. You’ll need a water deionizer for a pristine vehicle wash.

If you’re wondering which water deionizer is ideal for your car, look no further than our list of the top 5 best water deionizers for car washing. All of the deionizers included in our guide perform quite well, and most of them come with a long and impressive list of functions and advantages.

The On the Go dual bed deionizer, which saves up to 50% of your car’s interior cleaning time, is the finest water deionizer on our list. This gadget is reasonably priced and simple to use. It also eliminates practically all impurities from water in an easy-to-use design, making it excellent for consumers who desire convenience without spending a lot of money.

It is critical to remove the minerals in the water; otherwise, your automobile may corrode and function poorly.

The most typical way that ordinary people utilize these devices is using a hose and bucket setup. Other water deionizers that can be connected to an electrical outlet in your house or garage may also be purchased, which will save you time when compared to utilizing a bucket and hose technique.

They most notably aid in the removal of all dirt and impurities from your vehicle, as well as the removal of minerals and chemicals from the water.

Best Water Deionizer for Car Washing

Is it OK to wash my car using deionized water?

Yes, you can wash your automobile with deionized water. It will not create any issues and will perform admirably. Deionized water is produced by removing minerals found in hard water. Because it removes smells left behind by conventional tap water, deionized water is ideal for washing your automobile. Deionization also aids in the prevention and management of rust and corrosion.

It is critical to use this system on automobiles after they have been cleaned since the car will not be thoroughly rinsed off with plain tap water or detergent if one of these systems is not used beforehand!

5 Best Portable Water Deionizer for Removing Stains from your Car

1. On the Go Spotless Portable Dual Bed Deionizer

The On the Go Spotless Portable Dual Bed Deionizer is a versatile portable gadget. It’s small and portable, making it ideal for individuals always on the go. This low-cost gadget can eliminate microorganisms from water with a single button click. Using this deionizer regularly can keep your automobile looking fresh.

This is one of the greatest car wash deionizers. It helps you clean your water without harming its quality. It also boasts a dual bed design that can provide over 200 gallons of high-quality deionized water at 630 ppm before needing to be recharged!

The On the Go Spotless Portable Dual Bed Deionizer purifies water by removing heavy metals, pollutants, and microorganisms. It’s created by Onkei America Inc., founded in 2002.

With a four-foot hose with a cam lever, cap, and travel plug, this device may be used on any car or domestic appliance such as a washing machine or dishwasher.

The portable deionizing system removes lead (Pb), mercury (Hg), and chlorine. A water treatment facility is not required, saving on construction expenses. Overall, this machine is well-built, simple to operate, and inexpensive.

Using a portable deionizer saves time and money on water purification. These gadgets are portable and lightweight. Some variants also have a handle for easy transport in your vehicle or bike!

The On the Go Spotless Portable Dual Bed Deionizer is a versatile tool. A digital TDS meter is included for precise readings. The reasonable pricing makes it worthwhile because you get so much for your money!

It also has two water flow speeds so you may regulate the deodorizing force based on the sort of garments you’re washing. Spotless Portable Dual Bed Deionizer is ideal for commercial, residential, and office applications.

Also, the On the Go Spotless Portable Dual Bed Deionizer is portable and may be used for vehicle cleaning. It can save operational costs by half. The filter lasts two weeks before needing to be changed.

The On the Go Spotless Portable Dual Bed Deionizer can clean your automobile. It includes a short and maneuverable hose and a strong 12V DC electric motor to eliminate scents from your car.

This machine cleans both interior and exterior surfaces of automobiles without leaving residue, making it easy to wash or use indoors for reasons like air purification.

The On the Go Spotless Portable Dual Bed Deionizer is an excellent alternative for anyone who wishes to conveniently clean their automobile but has limited room.

2. No Spots Pro Deionized Water Generator

The No Spots Pro is a portable water deionizer for home or travel. It’s spotless and dishwasher safe. The gadget is built of tough plastic that is easy to clean. Includes a funnel attachment for filling tanks quickly and easily, as well as a measuring cup and measuring spout.

No Spots Pro Deionized Water Generator is a deionizer developed for autos. It cleans and shines your car’s wash, removing any contaminants. It not only cleans automobiles but also hardens surfaces, preventing scratches and marring.

No Spots Pro is a vehicle deionizer with a TDS meter. This type eliminates dangerous pollutants like calcium and iron, so you don’t have to worry about drying or water stains on the paint.

No Spots Pro Deionized Water Generator is a deionizer for autos and other uses. It’s expensive, but it removes stains off glass and windows without needing to buy additional solutions.

Like soap scum, hard water stains from home equipment such as washing machines are also easily removed with this solution.

3. On the Go Spotless Portable Mixed Bed Deionizer

Spotless Portable Mixed Bed Deionizer is a strong, portable water deionizer. It’s 75″ in diameter and features a 360-degree head for connection. The filters are easy to clean with tap water or distilled water.

This machine may be just what you need to effectively clean your automobile without using harmful chemicals. There are several water deionizers on the market, but On The Go’s mixed bed model is one of the finest.

It’s simple to operate and saves time because it doesn’t need to be drained like other models. It also contains a resin pellet filter that may be purchased from On The Go if your device breaks.

It’s a wonderful investment for anyone who desires a clean automobile. The On the Go Spotless Portable Mixed Bed Deionizer is perfect for keeping your car clean without using chemicals.

In public pools or drinking fountains, this gadget can eliminate 99 percent of microorganisms from water. It also includes an 8-liter capacity and a leak-proof connector to prevent spills while traveling with the deionizer.

4. APEC Water System CWS-300

The APEC Water System CWS-300 is a simple to maintain and operate deionizer. It includes a built-in pressure release valve that protects the pump from harm while not in use. The system also has a timer with automatic shut-off, so you won’t have to worry about leaving the machine on overnight. It also has two replaceable filters: a carbon cartridge filter and an activated carbon cartridge filter.

The APEC Water System CWS-300 is available in black or white. The APEC Water System is a deionizer intended for ease of use. It is lightweight (51 pounds) and has a 15 GPM flow rate for simple water movement. To remove debris from tap water without spending too much power on an electric pump, the filter is clog-free and trouble-free.

The filters have a limited lifespan, but may be replaced if they fail. The APEC CWS-300 is the finest water deionizer for car washing since it is simple to use and does not utilize chemicals that might ruin your vehicle’s appearance.

5. CR Spotless DI-120 Simplest RV & Car Wash System

Car wash system CR Spotless DI-120 Simplest RV & Car Wash System. It can clean vehicles without using chemicals. It has a stainless steel input line, filter wrench, spray nozzle, purity indicator, and safety limitations on how much water may be pushed through it.

DI-120 is the first firm to provide personal deionizers. It features a bigger tank and filter than most other deionizers of its size, yet it’s still tiny enough to fit in your car or RV.

The DI-120 is under $100 and comes with a brush attachment and a cleaning glove to assist clean your automobile or RV.

For RVs, automobiles, boats, pool filters, and more, the CR Spotless DI-120 is a practical and affordable option. 20-inch cartridge produces 200 gallons of Deionized Water. It has a simple one-button control panel. The unit is white, making it easy to clean your car, RV, or boat.

The CR Spotless DI-120 is a great car wash water deionizer. It saves time and energy compared to hand scrubbing. The unit’s basic design works with any vehicle wash hose, including ones with flow restrictors.

In the long term, you’ll save money since you won’t need to buy soap or chemicals like calcium chloride or baking soda as often.

Why you need Deionized water for car washing

Regularly washing and cleaning your automobile keeps it looking and smelling great. This is also the sort of maintenance that might help a car last longer.

Chemists found that deionizing water removes minerals that could otherwise interfere with their test results. Only a decade ago, it was used to clean automobiles. Here are some of the benefits of utilizing deionized water for car washing.

1. It prevents water stains on automobiles.

Water stains may be a significant irritation for drivers. These unsightly stains are produced by inadequate drying, acidic contaminants, and the continuous use of hard water for cleaning. Using deionized water can help you overcome these challenges.

To begin with, it dries up faster than tap water. Second, no deposits are left since the minerals in the water have been removed. Third, a shortage of ions attracts impurities such as dust, dirt, acids from rain, bird droppings, and other contaminants.

2. Removes Swirls and Scratches

Pollutants are drawn to deionized water, as indicated in number one. As a consequence, you will use fewer stiff brushes and harsh chemicals, which can cause ugly swirls and scratches that may demand costly body repairs in the future.

3. It saves time.

Deionized water, according to several customers, has shortened their auto washing time in half. If you wash your prized possession for three hours, for example, you will be able to spare one hour and a half that you can use to work, read the news, play with your children, or chat with your friends.

4. It saves water

You can save a lot of water by rinsing your vehicle faster. So, if you’ve been washing your car at home with 20 gallons of water, you’ll be down to 10 gallons every wash. Of course, this is only a guess.

5. It conserves energy.

You’ll save a lot of energy because washing and drying will take less time. That’s the energy you could spend playing with your children or catching up with friends.

6. it saves money.

When you use deionized water, you save money since you don’t have to buy chemicals or other cleaning supplies. All you need are two buckets, microfiber towels, organic soap, and water. That would also make some room in your garage!

7. It safeguards the environment.

You also benefit the environment by avoiding the use of strong chemicals that can affect the soil, storm drains, surface water, and groundwater.

8. Reduces the difficulty of waxing

The most crucial period to use deionized water when working on your automobile is before/during the application of sealants and paints. It is due to the presence of pollutants that are not apparent to the human eye. Before waxing, detailers who do not use steam or deionized water must use a clay bar.

NOTE: Deionized water lacks mineral ions, which is why it is termed deionized. In automobiles, deionized water rinsing systems should be used exclusively for rinsing, not washing.

When utilizing a water deionizer to remove TDS (total dissolved solids) and leave your car shining, no more towel drying.


A deionizer is a piece of equipment that removes ions from water. These ions are the microscopic mineral, salt, and metal particles contained in every drop of tap or distilled water. The procedure can remove these unwanted materials before they enter your car’s engine.

Deionizers are classified into two types: reverse osmosis and membrane filters. Reverse osmosis removes tiny molecules using a semi-permeable membrane filter that allows big molecules to flow through but excludes smaller ones. Membrane filters are more commonly used due to their greater efficiency rate.

To choose the finest water deionizer for vehicle washing, you must first determine which sort of ion remover is most suited to your requirements.

About the author

Martin Cooper is a Mechanical Engineer, a Blogger, and a Music Lover. He has amassed years of experience working in the Water industry. Discover Bright Water is the place he shares helpful water tips and products for a healthy water lifestyle.