The Cleansui EU101 and EU301 are both built-in water purifiers designed to be installed under the sink or kitchen counter, so they’re two models many people compare when they want a purifier with the unit hidden away below. From the outside, the two may seem to share a similar concept: both are home filtration systems with a cartridge capacity of 8,000 liters. But in fact, the EU101 and EU301 have important differences, especially when it comes to alkaline water production and electricity use.
The EU101 is a built-in water purifier focused on filtering water for drinking and cooking, while the EU301 adds an alkaline ionizer, so it can produce alkaline ionized water after filtration.
So the question “Cleansui EU101 vs EU301: which is better?” shouldn’t be answered by price or number of features alone. Start instead with whether you want plain filtered water or filtration plus alkaline water. This article compares the two models in detail, from the filtration system, cartridges, installation, power use and faucet to cartridge life and costs, to make your choice easier.
Cleansui EU101 vs EU301: What’s the Difference?
The biggest difference between the EU101 and EU301 is that the EU301 has an alkaline ionizer and the EU101 doesn’t. The EU101 is a built-in filtration system that sends water through the cartridge and out of the filtered-water faucet, while the EU301 adds a step after the water passes through the cartridge: electrolysis, which uses electricity to split the water and produce alkaline ionized water. Here’s a summary of the main differences:
| Feature | Cleansui EU101 | Cleansui EU301 |
|---|---|---|
| Type | Built-In Water Purifier | Built-In Water Purifier + Alkaline Ionizer |
| Cartridges | EUC2000 | EUC3000 |
| Cartridge capacity | 8,000 liters | 8,000 liters |
| Cartridge Life | Approx. 12 months* | Approx. 12 months* |
| Alkaline ionizer | No | Yes |
| Alkaline water | No | Yes |
| Uses electricity | Not needed for filtration | Needed for the ionizer |
| Installation type | Under-sink / built-in | Under-sink / built-in |
| Highlight | Simple system | Filtration + alkaline water |
*Cartridge life depends on water usage and the manufacturer’s conditions of use.
The EU101 uses the EUC2000 cartridge, while the EU301 uses the EUC3000. Both have a cartridge capacity of 8,000 liters and last about 12 months under the specified conditions (cleansui.com)
What Is the Cleansui EU101?
The Cleansui EU101 is a built-in water purifier designed for under-sink installation: the filter unit sits below, with a faucet on the counter that dispenses filtered water.
The EU101’s strength is that it’s a fairly simple system, focused on filtration without adding alkaline water production.
The EU101 uses the EUC2000 cartridge, which consists of a polyethylene hollow fiber membrane, activated carbon, ion exchange fiber and nonwoven fabric, according to the manufacturer (cleansui.com)
This filtration system can reduce many kinds of substances, such as chlorine, turbidity, soluble lead and certain compounds, according to the product’s specifications and test results. For homes that want filtered water for drinking, cooking or making drinks without needing an added alkaline system, the EU101 is the straightforward choice. Another point of interest is that the EU101 doesn’t need electricity to filter water, which makes it a good fit for people who want an uncomplicated system that’s easy to install.
What Is the Cleansui EU301?
The Cleansui EU301 is a built-in water purifier at heart, just like the EU101, but it adds an Alkaline Ionizer system.
So the process doesn’t end once the water passes through the cartridge: the system can send the filtered water through electrolysis to produce alkaline ionized water.
Cleansui states that the EU301 lets you choose the type of water using controls on the faucet, providing both filtered water and ionized water depending on the mode (cleansui.com)
The EU301 uses the EUC3000 cartridge, which has a capacity of 8,000 liters and lasts about 12 months when used under the conditions specified by the manufacturer.
So the difference between the EU101 and EU301 isn’t just a matter of different levels of filtration. The EU301 is a system that adds a water-conditioning function after filtration.
Do the EU101 and EU301 Use the Same Cartridge?
No, they’re not the same.
The EU101 uses the EUC2000
The EU301 uses the EUC3000
Although both models have the same cartridge capacity of 8,000 liters, you should use the cartridge that matches your unit, because the EUC2000 and EUC3000 shouldn’t be assumed to be interchangeable.
The EUC2000 is for under-sink filtration systems and the EUC3000 is for the model with an alkaline ionizer, so always check your unit’s model code before ordering a cartridge.
How Do the EUC2000 and EUC3000 Differ?
The EUC2000 and EUC3000 both have a capacity of 8,000 liters, but they’re designed for different systems.
The EUC2000 is a cartridge for a standard water purifier, using hollow fiber membrane and activated carbon technology along with other filter media. The EUC3000 is used in the system with an alkaline ionizer and has to work together with the EU301’s alkaline water production system. So don’t simply assume that
EUC3000 = higher model number = better filtration than EUC2000
The cartridges do different jobs and work with different systems, so your choice should depend on the unit you use and the functions you need.
Do the EU101 and EU301 Filter Water Differently?
Both models can reduce many types of contaminants, but you shouldn’t assume the EU301 filters better than the EU101 just because it has an alkaline system. The key difference with the EU301 is its ionizer after filtration, while the EU101 focuses directly on filtering water.
For the EU101, the EUC2000 system consists of activated carbon and a hollow fiber membrane, plus ion exchange fiber and nonwoven fabric (cleansui.com). The EU301, meanwhile, uses the EUC3000 and adds an alkaline ionizer.
So if what you need is filtered water, either model will do the job. But if you want filtered water that also goes through alkaline water production, you’ll need to consider the EU301.
How Do the EU101 and EU301 Differ on Alkaline Water?
This is the most important difference between the two models.
The EU101 filters water but has no alkaline water production system.
The EU301 has an alkaline ionizer that can turn filtered water into alkaline ionized water, depending on the mode.
This process uses electricity to split the water through electrolysis, and it gives the EU301 more functions than a standard water purifier. However, having an alkaline water system doesn’t mean every home needs one. If your main need is filtered water for drinking and cooking, a purifier that matches that need is enough. So it’s worth separating filtration performance from alkaline water production, because they’re two different functions.
Which Uses Electricity, the EU101 or the EU301?
The EU101 doesn’t need electricity for the filtration process.
The EU301 has an alkaline ionizer, so it needs electricity for the ionization process.
This is one of the differences to consider when installing, because the EU301 needs a suitable power supply under the sink. If you’re renovating your kitchen, plan the outlet location and the plumbing together so the EU301 can be installed without having to modify things later.
How Do the EU101 and EU301 Faucets Differ?
The faucet design is another difference, since the EU301 needs controls to select the water function. The EU301 has control buttons on the faucet to choose the type of water, while the EU101 has a faucet that simply dispenses filtered water.
So if you want a kitchen with a simple faucet setup, the EU101 has the more straightforward design, while the EU301 suits people who want to control the type of water and make use of the alkaline ionizer.
Do Cartridge Costs Differ Between the EU101 and EU301?
The two models use different cartridge codes, but the prices are at the same level (prices may change with promotions).
EUC2000 for the EU101, priced at 6,320 baht
EUC3000 for the EU301, priced at 6,320 baht
Based on a life of about 12 months:
6,320 ÷ 12 = about 527 baht per month
So in terms of cartridge cost alone, the EU101 and EU301 cost about the same at current prices. The difference in overall cost should therefore be judged by the unit price, the electrical setup and other expenses rather than the cartridge cost alone.
How Do the EU101 and EU301 Differ in Price?
Unit prices can change over time, with promotions and with the bundled equipment sold, so a price from any one point in time shouldn’t be treated as a fixed figure in an article. What’s more useful to compare is:
EU101
Unit price + EUC2000 cost + installation cost
EU301
Unit price + EUC3000 cost + installation cost + electrical work/related installation
If you don’t need alkaline water, buying the EU301 may mean paying for features you won’t use. On the other hand, if you already want an alkaline water system, choosing the EU301 from the start may save you from installing an additional system later.
Who Is the Cleansui EU101 For?
The EU101 suits people who want an under-sink water purifier for everyday use, focused on filtered water for drinking, cooking and making drinks.
The EU101 is a good fit if you:
- Want filtered water to drink every day
- Want water for cooking
- Don’t need an alkaline water system
- Want a system that’s easy to use
- Don’t want to add electrical work for the purifier
- Want to install the filter unit under the sink
If your goal is clean filtered water and easy use, with no special requirements, the EU101 is the better match in terms of system design.
Who Is the Cleansui EU301 For?
The EU301 suits people who want an under-sink filtration system and are also interested in alkaline water.
The EU301 is a good fit if you:
- Want a water purifier with an alkaline ionizer
- Want to choose the type of water at the faucet
- Want an alkaline water system for the uses it’s suited to
- Are designing a new kitchen
- Have the space and a power outlet for installation
- Want a system with more functions than a standard water purifier
If alkaline water is one of the main reasons you’re looking for a water purifier, the EU301 is a better fit than the EU101, because it’s designed specifically to support this function.
Are the EU101 and EU301 Suitable for Condos?
Both models can be installed in a condo if there’s space under the sink and the system can be installed according to the model’s requirements. However, with the EU301 you also need to think about electricity, because it has an alkaline ionizer.
Before installing, check:
- Space under the sink
- Pipe locations
- Faucet mounting hole size
- Countertop thickness
- Power outlet location for the EU301
- Space for replacing the cartridge
The EU301 supports a mounting hole of about 36–40 mm and a countertop thickness of about 4–30 mm. The EU101 has different installation requirements, so check the model’s specs before actually drilling the countertop.
If You Don’t Need Alkaline Water, Should You Buy the EU301?
If you don’t specifically need alkaline water, consider whether the EU301’s extra functions would actually be useful to you. If your main goal is filtered water for drinking and cooking, the EU101 meets that need without adding an alkaline ionizer. But if you want the option of using several types of water and you’re already interested in alkaline water, the EU301 is the better fit.
A simple rule of thumb: don’t pay for features you won’t use. A water purifier is something you’ll use continuously for years, so choosing a system that matches your real needs makes your investment more worthwhile.
If You Want Alkaline Water, Should You Choose the EU301?
If you want an alkaline ionizer in an under-sink water purifier, the EU301 is the model designed specifically for this purpose.
The EU301 combines filtration and an alkaline ionizer in one set, so you don’t need a separate purifier and alkaline water ionizer.
That said, read the manufacturer’s instructions and recommendations on alkaline water before using it, and don’t assume alkaline water is healthier than regular drinking water in every case, because the main job of a water purifier is to improve water quality according to the stated capabilities of its filtration system.
Cleansui EU101 vs EU301: Which Should You Choose?
- The EU101 and EU301 share the same foundation as under-sink water purifier systems, but they’re designed for different purposes.
- EU101 focuses on filtering water for drinking and cooking, uses the EUC2000 cartridge with a capacity of 8,000 liters, and doesn’t need electricity for filtration.
- EU301 adds an alkaline ionizer, uses the EUC3000 cartridge with a capacity of 8,000 liters, and needs electricity for alkaline water production.
If you just want filtered water for drinking and cooking, the EU101 is the model that matches simple, everyday use.
If you want filtered water plus alkaline water production, the EU301 is the model designed specifically for that need.
Another point worth noting is that cartridge costs for the two models are about the same at the prices currently shown on Waterclick: the EUC2000 and EUC3000 are both listed at 6,320 baht per cartridge. So the cost difference should mainly be judged by the unit price and the extra functions.
Before you decide, consider your usage, installation space, need for alkaline water, cartridge costs and electrical setup, so you can choose the model that best suits your home.
To see details of other built-in models, visit Cleansui built-in water purifiers or read the article Which Cleansui Under-Sink Water Purifier Is Best? Every Type and Model Compared
FAQ Cleansui EU101 vs EU301
What’s the Difference Between the Cleansui EU101 and EU301?
The main difference is that the EU301 has an alkaline ionizer that produces alkaline water after filtration, while the EU101 is a built-in water purifier for regular filtered water. The EU101 uses the EUC2000, and the EU301 uses the EUC3000 (cleansui.com)
Do the EU101 and EU301 Share the Same Cartridge?
No. The EU101 uses the EUC2000, while the EU301 uses the EUC3000. Although both cartridges have a capacity of 8,000 liters, you should use the one that matches your unit.
Which Uses Electricity, the EU101 or the EU301?
The EU101 doesn’t need electricity for filtration, while the EU301 needs electricity for its alkaline ionizer.
How Do the EUC2000 and EUC3000 Differ?
The EUC2000 is for standard filtration systems such as the EU101, while the EUC3000 is for systems with an alkaline ionizer such as the EU301, so don’t use one in place of the other without checking model compatibility.
Are EU101 and EU301 Cartridge Costs the Same?
Waterclick currently lists the EUC2000 and EUC3000 at the same price of 6,320 baht per cartridge, but prices may change with promotions and over time (waterclick.co.th)
Does the EU301 Filter Water Better Than the EU101?
You shouldn’t conclude that from the model name alone. The main difference is that the EU301 adds an alkaline ionizer after filtration, while the EU101 focuses directly on filtering water with the EUC2000 system.
What Kind of Home Is the EU101 Right For?
It suits homes that want filtered water for drinking and cooking and an easy-to-use under-sink system without an alkaline ionizer.
What Kind of Home Is the EU301 Right For?
It suits homes that want an under-sink water purifier with alkaline water production and have suitable space and electrical setup for installation.
Can the EU101 and EU301 Be Installed Under the Sink?
Yes. Both models are designed for under-sink installation, but the details of installation space, mounting holes and countertop thickness differ, so check the model’s specs before installing.
References: cleansui.com
