Under-sink Filters
Under-sink Filters | Water Purification | Plumbing | Cowan
Experience crisp, confident drinking water straight from the tap with HEP’s compact under-sink filters. Discreetly installed behind your kitchen cabinetry, these advanced cartridges strip out chlorine, sediment, micro-plastics and lingering odours, leaving every glass tasting mountain-fresh. No countertop clutter, no bulky jugs—just a sleek, plumber-approved system that keeps pace with busy Cowan households and small cafés alike.
Our licensed technicians handle everything from precise cut-ins to final pressure tests, so you can enjoy effortless water purification without lifting a wrench. Filters are quick-swap, eco-friendly and backed by prompt local support; simply twist, click and keep the hydration flowing. Upgrade today and feel the difference in your cooking, coffee and daily routine—pure convenience delivered beneath your sink.
FAQs
What specific contaminants do your under-sink filters remove from Cowan’s municipal water supply?
Our multi-stage systems are engineered to target the most common substances detected in Cowan’s water reports, including chlorine and chloramine (taste & odour), sediment down to 0.5 µm, heavy metals such as lead and mercury, volatile organic compounds (VOCs), some pesticides/herbicides, and cysts like Giardia and Cryptosporidium. Optional add-on cartridges are available for fluoride or PFAS reduction if your household has particular concerns.
How often will I need to replace the filter cartridges?
Standard carbon/dual-media cartridges last 6–12 months, or roughly 2,000–3,800 litres, depending on usage and incoming water quality. The sediment pre-filter may need changing sooner in homes with high particulate levels; the specialty fluoride or PFAS cartridges typically last 9–12 months. We provide reminder stickers and an email alert service so you never miss a change-out.
Can I install the system myself, or do I need a licensed plumber?
Many DIY-minded homeowners can install our kits in about an hour with common tools. Each unit ships with colour-coded tubing, push-fit connectors, a dedicated drinking-water faucet, and step-by-step instructions. However, Cowan plumbing codes require any connection to the mains to comply with AS/NZS 3500; if you are unfamiliar with isolation valves or need to drill the sink, hiring a licensed plumber is recommended. Professional installation also preserves your 3-year warranty.
Will an under-sink filter slow down my water pressure?
Our high-capacity cartridges are designed for a service flow of 6–8 L/min, virtually the same as a standard kitchen mixer. You may notice a slight reduction only when cartridges are overdue for replacement. For homes with very low incoming pressure (<200 kPa) we can supply a low-restriction model or a booster pump.
How does the cost compare to buying bottled water?
After the initial equipment and installation cost (typically $189–$349), annual cartridge replacement averages about $80–$120. For a family using 10 L of drinking water per day, that equates to roughly 2–3 cents per litre, versus 50–250 cents per litre for retail bottled water. Over five years, most households in Cowan save $2,000–$3,500 while reducing plastic waste by more than 8,000 single-use bottles.
What kind of maintenance or warranties are included?
Routine maintenance is limited to cartridge changes and an occasional wipe-down of the faucet aerator. All housings, fittings, and the faucet carry a 3-year parts warranty, and the cartridges have a 30-day performance guarantee. If you register online, you’ll receive free lifetime phone support plus discounted replacement filters delivered anywhere in Cowan within 48 hours.