What Is a Refrigerator Water Filter and Do You Need One?
Many modern refrigerators with built-in water dispensers and ice makers include a built-in water filter. But do these filters actually improve your water quality, and are they worth maintaining? This guide explains what refrigerator water filters do and helps you decide if they're worthwhile.
How Refrigerator Water Filters Work
Refrigerator water filters are typically carbon-based block filters installed in-line in the water supply to the dispenser and ice maker. The water passes through activated carbon before it reaches your glass or ice cube tray. Activated carbon works by adsorption — contaminants bond to the surface of the carbon material and are removed from the water.
What Do Refrigerator Water Filters Remove?
Standard refrigerator water filters are certified to reduce:
- Chlorine and chloramines — improves taste and odour significantly
- Some heavy metals — including lead and mercury (quality filters)
- Sediment — fine particles and cloudiness
- Some organic compounds — pesticides and herbicides (high-quality filters)
What most refrigerator water filters do NOT remove:
- Bacteria and viruses (they are not sterilisation filters)
- Dissolved salts and minerals (calcium, magnesium, fluoride)
- Nitrates
For these contaminants, a reverse osmosis system would be needed.
Is Sydney Tap Water Safe Without a Filter?
Yes — Sydney tap water supplied by Sydney Water meets Australian Drinking Water Guidelines and is safe to drink without filtering. The main reason most Sydney residents filter their water is to improve taste and odour by removing chlorine, which is added as a disinfectant. This is entirely a preference, not a health necessity.
How Often Should Refrigerator Water Filters Be Replaced?
Most manufacturers recommend replacing the filter every 6 months or after a certain volume of water (typically 300 gallons/1,135 litres). Many refrigerators have a filter indicator light that reminds you when replacement is due. Using an expired filter can cause:
- Reduced flow rate from the dispenser
- Reduced or no filtration effectiveness
- Potential for bacterial growth in the old filter media
Cost of Replacement Filters
Genuine OEM replacement filters for major brands typically cost $50–$120 per filter. Third-party compatible filters are available from $20–40 but vary significantly in quality. We recommend using manufacturer-specified filters to maintain your warranty and ensure certified filtration.
Fridges with Water Dispensers at Oceania Appliances
We stock Samsung, LG and other fridges with built-in water dispensers and ice makers. Visit our Wetherill Park showroom or contact us at support@oceaniaappliances.com.au. Open 7 days 10am–8pm.