How to change water filter core number 1,2,3 at home simply, 100% successful
1. Detailed instructions on how to replace cores 1, 2, and 3
Below are detailed instructions from preparing tools to the replacement steps. Ensure you can replace the coarse filter cores at home quickly and accurately.
Tools to prepare before changing the core:
- Water filter core: With basic filter cores 1, 2, 3 of each brand are used together and suitable for all types of machines. Choose genuine filter cores by purchasing directly at the store or exclusive distributors.
- Basin, bucket: Used to hold the dripping water, avoid wetting the floor
- Dry hand towel: Used to dry wet items that may hinder the process.
- Supporting tools such as: screwdriver, water source valve,...
There are a total of 4 steps to replace the rough filter, in detail:
Step 1: Turn off water and electricity
Turn off the water and electricity to completely stop the operation of the filter, convenient during the process of replacing the filter. In addition, during the process, if the power is not turned off and water leaks, it will be dangerous for the person replacing the filter.
Disconnect water and electricity to facilitate filter replacement.
Note: If you do not know the location of the water valve, you can follow the water line to cup 1 to find it. The water valve is usually designed to be red or blue.
Step 2: Remove old filter cups 1, 2, 3
Use your bare hands or a special tool and turn counterclockwise to easily remove the filter cup. Remove the filter cups in order 1, 2, 3. Next, separate the old filter core from the filter cup and perform the basic filter cup cleaning process.

Remove filter cups 1,2,3 by hand.
Note: To limit excess water from flowing onto the floor, place the prepared bucket or basin underneath before removing the filter cup.
Step 3: Insert the new filter core into the filter cup
Before installing a new filter core into the filter cup, you need to determine exactly which filter cup is suitable for which filter core. After having a new filter core, do not install it into the machine immediately, but first drain the remaining water in the machine for a few seconds. When finished, continue to turn off the power and close the water valve before installing the new filter core into the filter cup.

Proceed to install the new filter core into the corresponding filter cup.
Note: Before installing a new filter core into the corresponding filter cup, the protective film of the filter core must be removed.
Step 4: Install the finished filter cup
After installing the filter cores in the correct positions 1, 2, 3, you can restart the machine. Proceed to plug in Power, open the water valve to check the preliminary operation of the filter.

Use a special screw tool to insert the filter cup into the finishing machine.
Note: When reinstalling the filter cup into the machine, make sure to screw it firmly to avoid water leakage during use.
Video of core replacement process number 1, 2, 3: https://www.youtube.com/watch?v=ZwH356Af49k
2. Price of water filter cores number 1, 2, 3 of brands
Currently on the market there are many types of water filter cores from different brands and different characteristics. From these reasons, there are differences in price ranges depending on the needs of the user.
To be able to replace water filter cores number 1,2,3, you need to choose the right product at an affordable price.
Below is the price range for your reference:
- The price of the number 1 filter core on the market today ranges from: 60,000 VND - 420,000 VND
- The price of filter core number 2 on the market today ranges from: 80,000 VND - 425,000 VND
- The price of filter core number 3 on the market today ranges from: 80,000 VND - 800,000 VND
Price list of cores number 1, 2, 3 of some brands:
| Trademark | Core price number 1 | Price of filter core number 2 | Price of filter core number 3 |
| Mutosi | 100,000 VND - 200,000 VND | 150,000 VND - 250,000 VND | 100,000 VND - 200,000 VND |
| Sunhouse | 100,000 VND | 120,000 VND | 110,000 VND |
| CNC | 250,000 VND | 250,000 VND | 520,000 VND |
| Geyser | 180,000 VND | 180,000 VND | 800,000 VND |
| Aquastar | 420,000 VND | 425,000 VND | 425,000 VND |
| Jenpec | 70,000 VND - 350,000 VND | 100,000 VND - 150,000 VND | 90,000 VND |
3. When to replace water filter cores 1, 2, 3
For the water purifier to operate with quality and proper capacity, the user needs to replace the filter periodically. Specifically as follows:
- Core No. 1: 3 - 6 months (equivalent to 18,000 liters of water)
- Core number 2: 6 - 9 months (equivalent to 27,000 liters of water)
- Core number 3: 9-12 months (equivalent to 36,000 liters of water)
Note: However, in many cases, even though the filter core has not yet reached the time to be replaced, but there are signs of a lot of dirt accumulation, the water filtration function is no longer working well, you should replace the core immediately.
Specific signs:
- Slow flowing water
- Water has a strange smell and changes color
- The filter makes strange noises.
- Water leaks a lot and waste flows a lot too.
Thus, with just basic knowledge and operations, you can completely replace water filter cores number 1, 2, 3 at home. In addition, choosing a quality water filter core product at an affordable price is essential.
Mutosi is a leading supplier of water filter cartridges suitable for many types of water purifiers at prices suitable for every home.
Regarding quality, filter core products at Mutosi are inspected by the Ministry of Health according to Japanese standards.
Mutosi filter cores supplement many essential minerals for the body such as Mg+, Ca+, Na+... Mutosi filter cores currently have over 5000 points of sale nationwide with extremely attractive warranty policies.