Most of us know when it’s time to replace certain household items, such as an old kitchen sponge or heating filters.
However, there are devices and tools you may not realize expire faster than expected. They may still appear to work, while in reality they have become less safe or less efficient, according to a report published by SlashGear.
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Here are five key devices you should monitor and replace regularly:
1. Surge protectors
They may look like ordinary power strips as long as the indicator light is on, but surge protectors have a relatively short lifespan—usually between three and five years.
This is because they rely on special metal components (MOVs) that absorb temporary power surges. Over time, these components degrade, turning the device into a simple power strip with potential fire risks.
If your surge protector is more than five years old, it’s best to replace it immediately. The cost of a new one is far less than replacing devices that could be damaged by an old protector.
2. Routers
Your router may be old yet still seem to work fine, but over time manufacturers stop providing security patches and software updates, making it vulnerable to cyberattacks.
If your home router hasn’t received updates for a long time or has become noticeably slow, it’s time to replace it.
Some older devices can be given a second life using open-source firmware such as OpenWrt, but this requires technical knowledge.
3. Electric toothbrush heads
Electric toothbrushes can last for years, but their heads need to be replaced about every three months.
Old heads clean teeth less effectively and can become breeding grounds for bacteria, increasing the risk of gum problems.
Even if the heads appear clean, using them for six months or more means it’s time for a replacement to maintain good oral health.
4. Smoke detectors and carbon monoxide detectors
These devices are easy to forget because they’re mounted on the ceiling, but they are among the most important safety tools in the home. Smoke detectors typically last between seven and ten years, while carbon monoxide detectors should be tested and replaced according to the manufacturer’s recommendations.
Old devices may fail to alert you during an emergency—especially with carbon monoxide, which is odorless and potentially deadly.
5. Water filters
Even potable water can contain minerals, bacteria, or chemicals. Filters such as those used in Brita pitchers or faucet-mounted systems usually need to be replaced every two months, or after about 40 gallons of use. Otherwise, they can become reservoirs for contaminants instead of purifying the water.
Larger household filtration systems may last up to six months depending on the type and water quality, so be sure to check the manufacturer’s guidelines.
