- ✗Complete Home Filtration's proprietary 15" cartridge is the most significant lock-in risk in the Perth market. No aftermarket alternatives exist — you pay their price, every year, forever.
- ✗A CHF system costs $4,499+ upfront plus $277/year in subscriptions. AquaCo's comparable system costs significantly less with open-format cartridges at roughly half the annual running cost.
- ✓CHF does have real strengths: 2,400+ verified reviews, a 48 L/min flow rate (highest in Perth), a showroom, and WaterMark compliance. These matter — they just don't outweigh the lock-in risk at that price.
- →AquaCo scores 9.1 with NSF 42 & 53 certification, standard Big Blue cartridges, and a 4.9★ track record. The technology is comparable — the cost structure is not.
- !CHF uses in-home sales demonstrations — including the TDS meter and electrolysis tests. Read our guide to these tactics before any sales visit.
The scorecard
| Criteria | AquaCo | Complete Home Filtration | Edge |
|---|---|---|---|
| NSF certification | NSF 42 & 53 | Not published | AquaCo ↑ |
| WaterMark compliance | ✓ Verified #23448 | ✓ Confirmed | Equal |
| Cartridge format | Standard Big Blue | Proprietary 15" | AquaCo ↑ |
| Lock-in risk | Low — open market | Critical — no alternatives | AquaCo ↑ |
| System upfront cost | Mid-range | $4,499+ | AquaCo ↑ |
| Annual cartridge cost | ~$120–$180/yr | $277/yr subscription | AquaCo ↑ |
| Customer reviews | 4.9★ (349 reviews) | 4.2★ (2,400+ reviews) | AquaCo ↑ |
| Flow rate | Standard | 48 L/min — highest in Perth | CHF ↑ |
| Sales model | Transparent quoting | In-home demonstration | AquaCo ↑ |
| Transparency score | High | 5.0/10 | AquaCo ↑ |
| FilterOut Score | 9.1 / 10 | 6.8 / 10 | AquaCo ↑ |
The lock-in issue — the most important number in this comparison
The single biggest factor driving CHF's lower score is their proprietary 15" cartridge format. Unlike standard industry sizes (Big Blue 10" or 20"), the CHF cartridge fits only their housing and can only be purchased from Complete Home Filtration at $277 per year on subscription. There are no aftermarket alternatives. There have never been any aftermarket alternatives. The manufacturer intentionally designed the system this way.
This is not a hidden detail — it is a deliberate business model. The upfront system cost is covered by the ongoing cartridge revenue. For the life of the system — typically 10–15 years — you are a captive customer with no ability to shop around, switch suppliers, or use standard replacements if CHF's pricing changes or if the company's circumstances change.
The 10-year cartridge calculation: At $277/year over 10 years, CHF cartridges cost $2,770 — on top of a $4,499+ upfront price. Total 10-year commitment: approximately $7,269+. AquaCo's equivalent system with standard Big Blue cartridges at ~$150/year: approximately $3,000–$3,500 total. The lock-in adds roughly $3,700 to the 10-year cost relative to an open-format alternative.
5-year cost comparison
Where Complete Home Filtration genuinely leads
Fairness requires acknowledging where CHF is legitimately strong — and these are not insignificant factors.
Flow rate: CHF's system delivers 48 litres per minute, the highest of any Perth supplier in our directory. For large households with high simultaneous demand — multiple showers, appliances and garden taps running at once — this is a real advantage that most competitors cannot match. If your household genuinely needs that throughput, it matters.
Review volume and showroom: 2,400+ Google reviews represents a substantial real-world track record. A 4.2★ average from that volume is harder to dismiss than a 4.9★ from 349 reviews. CHF also operates a physical showroom, which some buyers genuinely value — being able to inspect equipment in person before purchasing is not nothing.
WaterMark compliance: CHF's full system is WaterMark certified, which means licensed plumbers can legally install it with confidence. This is the baseline expectation for any credible supplier, but it is confirmed.
These are the reasons CHF scores 6.8 rather than lower. They are a real business with a real product and a real customer base. The issue is whether those genuine strengths justify the price premium and the permanent cartridge lock-in. FilterOut's assessment is that they do not — for most buyers.
The sales model — what to expect before you buy
Complete Home Filtration sells primarily through in-home demonstrations — a representative visits your property, runs water quality tests, and presents the system. This model is not inherently dishonest, but it is associated with specific pressure dynamics that buyers should understand before agreeing to a demonstration.
The in-home sales process typically involves: tests that create alarm about water quality (including the electrolysis and TDS demonstrations we've covered in detail in our onsite testing guide), requiring both household members to be present, extended demonstrations of 90+ minutes, and same-day pricing incentives. None of these are illegal, but all of them are designed to create urgency and reduce the likelihood of independent comparison.
If you receive a CHF demonstration, you are entitled to take the quote away and compare it against other suppliers before signing. You have a 10-day cooling-off period under Australian Consumer Law for any in-home sales agreement. CHF's system, evaluated on its own merits without time pressure, is not a bad product — it is simply priced significantly above what comparable filtration technology costs through other channels.
One test worth doing: At any in-home demonstration, ask the representative to write down the cartridge model number and confirm whether third-party alternatives exist. Their answer — and their comfort level with the question — tells you a great deal about the transparency of the business model.
Is there a buyer for whom CHF makes sense?
Potentially, yes — if all of the following are true: you specifically need the highest flow rate available in Perth (48 L/min) for a large household with high simultaneous demand, you genuinely value a physical showroom presence and in-person buying experience, long-term cartridge costs are less important to you than installation simplicity, and you are not price-sensitive on the upfront investment.
This is a narrower buyer profile than CHF's marketing implies. For the majority of Perth households, a well-specified AquaCo system delivers equivalent or superior filtration at substantially lower 10-year cost, without the lock-in risk.
Complete Home Filtration makes a capable product. The 6.8 score is not a condemnation — it reflects a business model that creates significant ongoing financial exposure for buyers relative to what equivalent filtration technology costs through open-market alternatives.
AquaCo at 9.1 leads this comparison on certifications, pricing transparency, cartridge flexibility, and the overall value of what you get for your money. For most Perth homeowners, the choice is straightforward. If you are comparing quotes, use our 28-question checklist to run both suppliers through the same framework before deciding.