Have you ever wondered if your whole house water filter is actually doing its job?
Most people install a water filtration system and forget about it. But if you’re not changing your filter regularly, you might be doing more harm than good. A clogged or old filter won’t just let contaminants through—it can actually make your water quality worse.
How often should you change your whole house water filter?
There’s no one-size-fits-all answer. The right schedule depends on:
The type of filter you use
Your household’s water consumption
The quality of water coming into your home
As a general guide, sediment pre-filters should be changed every 3 to 6 months, while carbon filters usually last 6 to 12 months. Some high-capacity filters can last up to 5 years, but these are less common.
What happens if you don’t replace your water filter?
A dirty filter is just as bad as no filter at all. Over time, contaminants build up and clog the system. This can lead to:
Reduced water pressure – Your taps might start to trickle instead of flow.
Contaminants bypassing the filter – Meaning you’re drinking and bathing in unfiltered water.
Damage to appliances – Scale and debris buildup can shorten the lifespan of your plumbing and appliances.
Some homeowners in Perth have reported noticeable limescale buildup in their plumbing due to hard water. Many who installed whole-house filtration systems saw a significant improvement, but others questioned whether the cost was worth it, especially when considering ongoing filter replacements.
Signs your water filter needs changing
Not sure if it’s time to replace your filter? Here are some warning signs:
Water pressure has dropped
Unusual taste or odour in your water
Visible sediment or discoloration in the water
Some Australian homeowners have noticed their water becoming slightly cloudy or tasting metallic when filters are overdue for replacement. If you’re unsure, contact us and we can check it for you.
Which water filter is best for Australian homes?
Australia’s water supply varies by region, so the best filter depends on your local water quality. Whole-house filters can help remove chlorine, sediment, and some heavy metals. Some Reddit users in Perth noted that their biggest concern was hard water damage, which led to blocked pipes and appliance issues. A filtration system with a built-in water softener was a game-changer for those dealing with limescale problems.
How much does it cost to replace a whole house water filter?
Replacement costs vary depending on the type of system you have. Expect to pay between $50 and $200 for a standard filter replacement. For more advanced systems, like reverse osmosis filters, replacements can be upwards of $500. Some homeowners on Reddit suggested buying replacement filters in bulk to save money, especially for families that need frequent changes. If you’re unsure, get in touch with us and we can help.
Final thoughts
Regularly changing your whole house water filter isn’t just about clean drinking water—it protects your plumbing, appliances, and overall health. Don’t wait until you notice problems. Stick to a schedule, and your water quality will thank you.
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