A warranty question is really three questions, because three separate protections stack on top of each other. Knowing which layer covers what saves you arguments later, so here is the map.
The three layers of warranty protection
| Layer | Who provides it | What it covers | Typical duration |
|---|---|---|---|
| Workmanship warranty | The plumber | The quality of the installation or repair work itself | Stated by the plumber, in writing on the invoice |
| Manufacturer warranty | The product maker | The part or appliance failing (tank, tapware, valve, liner) | Varies; hot water cylinders commonly 5 to 10 years, quality tapware often longer |
| Statutory rights | QBCC and Australian Consumer Law | Defective work and services not done with due care and skill | Applies by law, cannot be signed away |
What does a workmanship warranty actually cover?
It covers the work, not the part. If a fitting we installed weeps because it was not made up properly, that is workmanship and we fix it at our cost. If the part itself fails within its manufacturer warranty, the part is covered by the maker and the fair question becomes who pays for the labour to swap it, which is exactly the detail to get in writing before the job. Ask any plumber two things: how long is your workmanship warranty, and if a part fails inside its warranty period, do you charge labour to replace it? The answers vary across the industry, which is precisely why the question matters. Whatever the answer, it should be on the invoice, because a verbal warranty from a business you cannot reach later is worth nothing.
What protection do I have under QBCC and consumer law?
Two backstops apply in Queensland whether or not anything is written down. First, the QBCC regulates plumbing work and can take complaints about defective work, with the practical window for pursuing defects extending years beyond completion, longer for serious structural defects. That is a strong reason to only use licensed plumbers: QBCC protections attach to licensed work. Second, the Australian Consumer Law guarantees that services be provided with due care and skill and be fit for purpose, and these guarantees cannot be excluded by any clause in a quote. So a plumber saying "30 day warranty only" does not actually cap your rights at 30 days if the work was defective. What the statutory layers do not cover is fair wear and tear, misuse, or parts simply reaching end of life, which is where the manufacturer layer takes over.
What about long-life warranties like pipe relining?
Relining is the standout, and it is worth understanding because the warranty is a genuine part of what you are buying. Structural liners installed at $400 to $600 or more per metre commonly carry long manufacturer material warranties, and installers add a workmanship warranty on top. Ask three questions before signing a relining quote: how long is the liner material warranty, how long is the installation workmanship warranty, and is the warranty transferable if you sell the house? A transferable warranty on a relined sewer is a real asset at sale time, and it is one of the reasons relining at a higher upfront cost can beat a cheap repeat-clearing cycle. The same logic applies to hot water: a cylinder warranty only holds if the system was installed by a licensed person to the standards, which is another way unlicensed work quietly costs you money.
What voids a plumbing warranty?
The common ones: unlicensed or DIY interference with the work after installation, using the wrong consumables, ignoring required maintenance such as anode changes on a tank or servicing schedules on gas appliances, and physical damage from other trades. Keep your invoices, keep the compliance paperwork, and if another trade needs to work near warranted plumbing, tell them it is there. The pattern across warranty claims we handle is that documented, maintained installations get claims paid quickly, and undocumented ones turn into arguments.
How do I protect myself in practice?
Get the workmanship warranty in writing, keep the manufacturer paperwork, verify the licence so statutory protections attach, and maintain what you install. Then file it all somewhere you can find it in year six.
Sources: QBCC complaint and defective work processes; Australian Consumer Law (Competition and Consumer Act 2010, Sch 2) consumer guarantees; Plumbing and Drainage Act 2018 (Qld).
Want work that comes with a warranty worth having? Call Hills Plumbing & Gas on 0472 657 042 or book through our Pipe Relining service page and ask us the transferable warranty question. We like customers who ask it.