Full Analysis of the Function Comparison between Pre filter and Water Purifier1
Time:2026.05.14 Source: Multifunction pre-filter,Automatic sewage pre-filter,Taizhou Qiyue Environmental Protection Technology Co., Ltd. Clicks:
◆ Differences in functional positioning and division of labor
Filter levels and scope of application
1 Pre filter
Installed at the main valve of the household water pipe ✅ 40-100 micron filtration accuracy ⭐ Can block large particles of impurities such as sediment and rust
Protecting all household appliances such as water heaters and washing machines can extend their lifespan by over 30%
Belonging to physical filtering ⭐ Will not change the water quality itself
2 water purifiers
Usually installed under the kitchen faucet ⭐ Using RO reverse osmosis technology ✅ Accuracy can reach 0.0001 micrometers
Can filter out invisible pollutants such as bacteria and viruses
The water that comes out can be consumed directly ✅ Addressing water safety concerns
Collaborative working relationship
The pre filter lays the foundation for the water purifier
First, block the large particles of impurities ⭐ The filter element of the water purifier can last longer
When the water stops and comes back to water ✅ Avoid direct entry of yellow water into the water purifier
2. Fine treatment of water purifiers
The pre filter blocked large particles ⭐ The water purifier focuses on treating pollutants dissolved in water
Two working together ✅ Safe from using water throughout the house to drinking water
Necessity analysis and applicable scenarios
It is recommended to install both of them
Secondary water supply for old residential areas or high-rise buildings
Pipeline aging is prone to rust ✅ The pre filter is very effective
When the water quality is unstable ⭐ Double protection brings peace of mind
Two families with children or people with sensitive skin
Pre protection shower water ✅ Water purifier ensures safe drinking water
Reduce the irritation of residual chlorine in water to the skin
3 households have multiple water facilities
Pre filters can extend the lifespan of water heaters, smart toilets, and more
If we install a whole house water purification system ✅ Lower maintenance costs in the later stage
The situation where only one can be installed
1. Limited rental budget
Install the kitchen water purifier first to ensure drinking water
The pre filter can be added later ✅ It depends on the position of the water pipe
2. New residential areas with good water quality
If the municipal water supply is stable ⭐ Pre installation can be done later
Regularly check water quality ✅ Add it when necessary
Economic and long-term benefit evaluation
Initial installation cost
Install one separately
Pre filter 200-1500 yuan ✅ No need to replace the filter element
Water purifier 2000-5000 yuan ⭐ Regularly replace the filter element
Install two together
Pre installed RO water purifier combination costs approximately 3000-6000 yuan
If we install a whole house system ✅ Get 10000 to 30000 yuan
Return List
Filter levels and scope of application
1 Pre filter
Installed at the main valve of the household water pipe ✅ 40-100 micron filtration accuracy ⭐ Can block large particles of impurities such as sediment and rust
Protecting all household appliances such as water heaters and washing machines can extend their lifespan by over 30%
Belonging to physical filtering ⭐ Will not change the water quality itself
2 water purifiers
Usually installed under the kitchen faucet ⭐ Using RO reverse osmosis technology ✅ Accuracy can reach 0.0001 micrometers
Can filter out invisible pollutants such as bacteria and viruses
The water that comes out can be consumed directly ✅ Addressing water safety concerns
Collaborative working relationship
The pre filter lays the foundation for the water purifier
First, block the large particles of impurities ⭐ The filter element of the water purifier can last longer
When the water stops and comes back to water ✅ Avoid direct entry of yellow water into the water purifier
2. Fine treatment of water purifiers
The pre filter blocked large particles ⭐ The water purifier focuses on treating pollutants dissolved in water
Two working together ✅ Safe from using water throughout the house to drinking water
Necessity analysis and applicable scenarios
It is recommended to install both of them
Secondary water supply for old residential areas or high-rise buildings
Pipeline aging is prone to rust ✅ The pre filter is very effective
When the water quality is unstable ⭐ Double protection brings peace of mind
Two families with children or people with sensitive skin
Pre protection shower water ✅ Water purifier ensures safe drinking water
Reduce the irritation of residual chlorine in water to the skin
3 households have multiple water facilities
Pre filters can extend the lifespan of water heaters, smart toilets, and more
If we install a whole house water purification system ✅ Lower maintenance costs in the later stage
The situation where only one can be installed
1. Limited rental budget
Install the kitchen water purifier first to ensure drinking water
The pre filter can be added later ✅ It depends on the position of the water pipe
2. New residential areas with good water quality
If the municipal water supply is stable ⭐ Pre installation can be done later
Regularly check water quality ✅ Add it when necessary
Economic and long-term benefit evaluation
Initial installation cost
Install one separately
Pre filter 200-1500 yuan ✅ No need to replace the filter element
Water purifier 2000-5000 yuan ⭐ Regularly replace the filter element
Install two together
Pre installed RO water purifier combination costs approximately 3000-6000 yuan
If we install a whole house system ✅ Get 10000 to 30000 yuan