In recent years, water purifiers have become essential for every household. As people renovate their homes or customize their living spaces, many choose to install a water purification system. However, while the importance of having a water purifier is widely recognized, not everyone fully understands the maintenance and replacement schedule of its core component—the filter element. In reality, many people are unaware of the correct way to maintain these filters, which can lead to wasted resources and even health risks.
Let’s take a closer look at what happens when filters aren’t properly maintained.
**Reduced Filtration and Health Risks**
One of the first signs that a filter is worn out is reduced water flow. When the filter becomes clogged, it not only slows down the water supply but also weakens the overall filtration process, lowering the quality of the purified water. Additionally, the filter can trap organic matter, creating an environment where bacteria can grow. If the filter isn't replaced in time, this can lead to contaminated drinking water, exposing you to harmful substances that may affect your health.
**Overworking the System and Wasting Money**
Water purifiers typically work through multiple stages. For example, if the first-stage PP cotton filter becomes clogged, larger particles like sediment and rust will pass through and overload the second-stage filter. This extra burden can significantly shorten the lifespan of the second filter, leading to unnecessary costs. Instead of just replacing the PP cotton filter, you might end up replacing two or more filters at once. Over time, this can reduce the efficiency of the entire system and increase long-term expenses.
**How to Know When to Replace the Filter**
The question is: how do you know when it's time to replace the filter? Replacing it too early feels wasteful, while waiting too long can compromise water quality. No one wants to invest in an expensive water purifier only to find out the water isn’t safe. Buying a water purifier should be about protecting your family’s health, not creating new worries.
Generally, the lifespan of each filter varies:
- PP Cotton Filter: 3–12 months
- Pre-Activated Carbon Filter: 3–12 months
- Ultrafiltration Membrane: 3–12 months
- RO Membrane: 12–36 months
- Post-Activated Carbon Filter: 12–24 months
However, these are just general guidelines. Water quality and usage frequency can vary greatly depending on your location and household habits. For instance, if the filter wasn’t used for a period of time, does that count toward its lifespan? It can be tricky to determine.
**Simple Ways to Tell When to Replace the Filter**
Here are some signs that your filter needs to be replaced:
1. The water flow decreases significantly—this could mean the filter is clogged. Clean it if possible, but if the flow remains low, it’s time to replace.
2. The taste of the water changes—especially if it starts to smell like tap water. This suggests the activated carbon filter is saturated and no longer effective.
3. One year has passed since the last replacement—this is a good rule of thumb, even if no other symptoms are present.
If any of these happen, it’s time to consider replacing the filter. While it may seem inconvenient, it’s a small price to pay for clean, safe water.
To make things easier, many modern water purifiers, including those from Langmu, come with a built-in filter life reminder. This helps users track when it’s time to replace the filter without guesswork. Combined with personal experience, this makes it easier to stay on top of maintenance, saving both money and peace of mind.
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