Welcome To Demand Filtration

You may not know this, but your Simonds home was originally fitted with a wellness system designed to improve both your water and air quality — yet many of these systems were never completed or have gone years without maintenance. We’ve spoken to dozens of families who thought their home was protected, only to find out their filters were never replaced — or never installed to begin with.

At Demand Filtration, we’ve partnered with Delos to track, service, and restore these systems. Over 6000 Simonds households have already reactivated or upgraded their filtration through us, many reporting improvements like better tasting water, reduced skin irritation, and a healthier home feel. While our water filters are in stock and available, our air filters are currently sold out due to high demand — but we’re expecting restock soon.

This private page was built exclusively for Simonds homeowners — giving you access to replacements, upgrades, and exclusive pricing you won’t find anywhere else. You're not starting from scratch — you’re simply giving your home the protection it was designed for.

Why Maintain Your Filter?

Your water filter works around the clock to protect your home from harmful contaminants like chlorine, sediment, heavy metals, and in some cases, fluoride and PFAS. Over time, these filters become clogged — reducing water flow, allowing impurities to pass through, and even putting strain on your plumbing.

Here’s why regular maintenance matters:

Protect Your Family’s Health

A clogged or expired filter won’t effectively remove harmful substances. Replacing it ensures your water remains safe to drink, cook with, and bathe in.

Preserve Water Pressure

Blocked filters can lead to reduced flow and pressure throughout the house. Servicing keeps your water pressure strong and consistent.

Extend the Life of Your System

A well-maintained filter system lasts longer and performs better. Regular servicing prevents breakdowns and expensive repairs down the track.

Maintain System Warranty

Servicing your system at the recommended intervals helps maintain warranty coverage and ensures compliance with the manufacturer’s standards.

Peace of Mind

Know that your water is clean, your family is protected, and your home is running smoothly — all with a simple, scheduled filter replacement.

Upgrade Your System — Feel the Difference

Did your Simonds home come with a single-stage water filter?

That’s a great start — but there’s a reason thousands of Australian homeowners are now upgrading to the advanced 3-stage Delos system. It’s not just about better water — it’s about transforming the way your home feels, functions, and protects your family.

Why Upgrade?

Your current single-stage system does a solid job at basic filtration — but the 3-stage Delos setup is a world apart:
  • Deeper Filtration: Targets more contaminants like VOCs, chlorine by-products, microplastics & finer sediment.
  • Improved Water Taste & Odour: Dual carbon stages drastically enhance water quality at every tap.
  • Better for Skin & Hair: Reduced exposure to chemicals like chlorine can soothe dry skin and scalp irritation.
  • Protects Plumbing & Appliances: Cleaner water = longer life for your taps, shower heads, and hot water systems.
  • Whole-Home Wellness: Every shower, tap and laundry load runs on upgraded, cleaner water.

Not Sure if It’s Worth It?

Let’s show you.

We're offering FREE home consultations by licensed plumbers (not salesmen) to assess your setup, explain what’s possible, and provide you with the best advice — no pressure, just the facts.

Limited-Time Upgrade Offer

We’ve unlocked exclusive Simonds upgrade pricing — but only for the first 50 homeowners per state. After that, pricing returns to RRP.

Fully compliant, premium-grade components, 5-year warranty.

 

Book Your Free Assessment Now

Spots are filling fast. Click below to reserve your free visit — and take advantage of exclusive Simonds pricing before it’s gone.

BOOK MY FREE HOME ASSESSMENT

Single Stage Replacement

What You Get with the Single Stage System Cleaner Water From Every Tap Removes sediment, chlorine, dirt, rust, and other impurities — improving the taste, smell, and clarity of your water across the whole home.
  • Protects Skin & Hair: Reduces exposure to harsh chemicals during showers and baths, which is especially beneficial for people with sensitive skin or conditions like eczema.
  • Appliance & Plumbing Protection: Helps extend the life of dishwashers, washing machines, hot water systems, and tapware by reducing scale and sediment buildup.
  • Improved Water Pressure: Our oversized 20" system ensures strong, consistent pressure — unlike cheaper undersized units that often clog and slow your flow.
  • Easy Maintenance: Designed for simple DIY servicing, with replacement filters shipped to your door or installed by one of our licensed plumbers.
  • Peace of Mind: You’re covered with our trusted plumber-installed service, backed by years of experience and ongoing support.
SECURE YOUR SINGLE STAGE REPLACEMENT NOW

Triple Stage Replacement

Benefits of the Advanced 3-Stage Delos Replacement Filter Set Congratulations on choosing the ultimate optional upgrade when building your home — the advanced 3-stage Delos whole-home filtration system. This is not your average setup — it’s a multi-thousand dollar investment in clean, healthy water for your family. Now, it’s time to protect that investment by maintaining it properly. Replacing your filters annually ensures your system continues to perform at its best — keeping your water pure, your pressure strong, and your appliances safe.
  • Stage 1: Sediment Pre-Filter Captures visible dirt, sand, rust, and debris — protecting your plumbing and increasing the life of the next filters.
  • Stage 2: GAC (Granular Activated Carbon) Targets chlorine, odours, and chemical contaminants — improving water taste and removing harmful VOCs (volatile organic compounds).
  • Stage 3: 0.5 Micron Carbon Block Filter Delivers high-precision filtration that helps reduce fine sediment, bacteria, and cysts — keeping your water
  • Healthier Skin & Hair: Filters out chlorine and other harsh chemicals that can trigger skin conditions like eczema or psoriasis and scalp irritation.
  • Whole-Home Protection: Every tap, shower, and outlet receives filtered water — peace of mind across the entire house.
  • Maintains Strong Water Pressure: Blocked or overdue filters restrict flow. Fresh filters keep your system running smoothly and your showers strong.
  • Engineered for Your System: This set is designed specifically for your Delos installation — ensuring perfect compatibility and optimal results.
SECURE YOUR TRIPLE STAGE REPLACEMENT NOW

Reviews

Satisfied Customers

Hear directly from our satisfied customers about their experiences and why they trust our water filtration systems.

“We’d been searching everywhere for replacement filters with no luck. When Mohammed’s email arrived I ordered right away — water tastes fresher and my kids skin is better. Thanks Demand Filtration!”

Samantha W., Preston

“I was waitng months for replacements until Shanaya called me with an offer. We upgraded to the 3-stage and my wife’s eczema is already better. Still waiting on the air filters but happy so far.”

James T., Box Hill

“Finally got my filters after seeing Michael’s email. The plumber who came was great, very professional and quick. The 3-stage system really makes a difference. Can’t wait for those air filters though!”

Maya S., Glen Waverley

“I didn’t think the water pressure could improve until I replaced the filters with Demand Filtration’s help. Ali was really helpful on the phone. Looking forward to having the air filters back in stock.”

Derek M., Essendon

“Had bad water smell for ages, no filters anywhere. Shanaya sent me the details, so I ordered the triple stage system and its been great. Skin feels way better now, really happy.”

Lina R., Sunshine

“Mohammed was honest and friendly when he came out. The old filters were disgusting! The upgrade to the 3-stage was worth every cent. I’m not sure when the air filters will come but I’ll wait.”

Chris P., Footscray

“Love that the replacement filters arrived fast. The DIY video helped heaps to change them myself. Went with the 3-stage upgrade after a chat with Shanaya — totally worth it!”

Emily J., Balwyn

“Been waiting ages for filters so when Demand Filtration’s email came I was stoked. Water tastes better, coffee tastes better. They said air filters are out of stock but coming soon.”

Omar K., Reservoir

“Psoriasis flare ups are less since we upgraded thanks to Michael and the team. The wait for replacements was frustrating but now it’s all good. Hopefully air filters come soon too.”

Jake L., St Kilda

“Never knew filter replacement was so important until I got a call from Ali. They helped me upgrade and water quality is fantastic now. Air filters are on backorder but I’m happy for now.”

Nina F., Brunswick

“Filters were clogged and smelly, no replacements in sight. Demand Filtration’s email pushed me to order and it’s made a huge difference. The water flows better and smells fresh.”

Hannah D., Camberwell

“Had no luck finding filters until Mohammed called. He was very helpful and honest. We upgraded the system and I can already tell a difference in water taste and flow. Air filters are next on the list.”

Adam W., Coburg

Frequently Asked Questions

Find answers to the most common questions about our water filtration systems, installation process, and maintenance to help you make informed decisions about your water quality needs.

Your system’s appearance is the easiest way to tell.

  • Single-stage system: This is typically a single, large 20-inch white cylindrical canister mounted on the side of your property. It contains one filter cartridge that handles basic filtration like sediment and chlorine.
  • 3-stage system: This looks more complex — it’s usually a grey plastic box housing three separate filter cartridges inside, and it often has pressure gauges mounted on the side for monitoring flow and filter health. This setup provides multi-layered filtration for more comprehensive water treatment.

If you’re unsure, feel free to send us a photo or book a free inspection, and we’ll help you identify your system.

Typically, your filters should be replaced every 12 months, but this can vary depending on your household water usage and water quality.

  • Higher water consumption or poorer water quality may require more frequent replacements.
  • Conversely, lower usage or softer water might extend filter life slightly, but yearly replacement is recommended to ensure optimum system performance and water safety.

Regular replacement keeps your system running efficiently and prevents contaminants from building up and passing through your water supply.

If your filter was recently replaced with genuine Delos filters designed for the Darwin system, you can continue to use them until the next recommended change interval. Genuine filters ensure the system operates as intended, maintaining water quality and system integrity.

If your filters were replaced with third-party or generic products, we strongly recommend switching back to official Delos filters. Using authentic components designed specifically for your system ensures:

  • Proper fit and sealing
  • Optimal filtration performance
  • Compliance with manufacturer standards
  • Continued warranty validity

The same advice applies to air filters — only use certified replacements designed for your system.

Delaying filter replacement can cause several issues:

  • Reduced filtration effectiveness: Overused filters become clogged, allowing contaminants like sediment, chlorine, and bacteria to pass through.
  • Decreased water flow and pressure: Blocked filters restrict water flow, causing weak taps and uneven pressure throughout your home.
  • Damage to plumbing and appliances: Sediment and scale buildup can shorten the lifespan of dishwashers, washing machines, and water heaters.
  • Potential health risks: Contaminants that should be removed may enter your water supply, affecting taste, odour, and safety.
  • Voided warranties: Many manufacturers require regular maintenance to keep warranties valid.

Timely filter replacement is essential to maintain clean, safe water and protect your home’s plumbing.

Yes! We provide clear, step-by-step DIY videos, like the one available on this webpage, to guide you through the process. Our systems are designed for easy filter replacement — most homeowners can complete the task in under 10 minutes.

However, if you’re not confident or prefer professional installation, we offer licensed plumber services to handle it quickly and safely.

Delivery typically takes around 9 business days from order placement. We strive to maintain stock levels to prevent delays, but during peak demand or supply chain disruptions, delivery times may vary. We keep customers informed throughout the process.

  • Single-stage filter: Usually a 20-inch single cartridge system primarily designed to remove larger particles like sediment, rust, and chlorine. It provides basic filtration suitable for general water clarity and odour improvement.
  • 3-stage filter: Incorporates three distinct filter cartridges, each targeting specific contaminants: sediment, granular activated carbon (GAC), and a finer 0.5 micron carbon block filter. This multi-layered approach removes a broader spectrum of impurities including chlorine, VOCs, heavy metals, microplastics, bacteria, and cysts — resulting in cleaner, safer, and better-tasting water throughout your home.

The 3-stage system offers significantly enhanced water quality, better protection for your plumbing, and is ideal for families with sensitive skin or health concerns.

  • Single-stage 20-inch filter with carbon block:
     Removes sediment, rust, chlorine, some chemicals affecting taste and odour, and larger particles down to approximately 1 micron.
  • 3-stage 0.5 micron filter set (Sediment + GAC + Carbon Block):
     Removes sediment, rust, chlorine, VOCs (volatile organic compounds), pesticides, herbicides, heavy metals (lead, mercury), microplastics, bacteria, cysts, and other fine particulates as small as 0.5 microns — providing much more comprehensive protection and better-tasting water.

Signs it’s time for a replacement include:

  • Decreased water pressure or flow at taps and showers.
  • Change in water taste, smell, or appearance (cloudiness or sediment).
  • Visible filter discoloration if you can see the cartridge.
  • Manufacturer’s recommended schedule — typically every 12 months or as advised by your installer.
  • System pressure gauges (if installed) showing high differential pressure.

Replacing on schedule prevents issues before they start and ensures ongoing water quality.

Upgrading to a 3-stage system is more than just better filtration — it’s an investment in your family’s health and home:

  • Advanced filtration removes more contaminants including microscopic particles, bacteria, and harmful chemicals that the single-stage system can’t catch.
  • Better skin and hair health by reducing exposure to chlorine and irritants, especially important for those with eczema or psoriasis.
  • Longer-lasting protection for your plumbing and appliances, reducing costly repairs and replacements.
  • Improved water taste and clarity — every sip, shower, and wash feels cleaner and fresher.
  • Peace of mind knowing your water filtration system matches the premium quality your Simonds home was built for.

For a limited time, take advantage of exclusive pricing on upgrades, and let our licensed plumbers help you make the switch smoothly and professionally.

How to Replace Your 3-Stage Darwin Water Filter

Free Resource