HVAC Mechanics: How to Use the Security of Payment Act in Australia

If you’re an HVAC mechanic or small subcontracting outfit in Australia and a head contractor or builder owes you money, you probably already know how frustrating it is to chase payment. Late invoices drain cash flow. Excuses pile up. And sometimes, nothing happens until you’ve spent weeks on the phone.

The good news: Australia’s Security of Payment legislation gives you a legal pathway to force the issue—fast. It’s called a payment claim, and it works differently from small claims court or debt collection. It’s designed specifically for the construction industry, and it’s available to tradies like you.

Here’s what you need to know about using it.

What is the Security of Payment Act?

Every Australian state and territory has its own Security of Payment legislation. The exact names vary:

• NSW: Building and Construction Industry Security of Payment Act 1999
• Queensland: Building Industry Fairness (Security of Payment) Act 2017
• Victoria: Building and Construction Industry Security of Payment Act 2002
• South Australia: Security of Payment Act 2009
• Western Australia: Construction Contracts Act 2004
• Tasmania: Construction Contracts (Security of Payments) Act 2004
• ACT: Construction Contracts (Security of Payments) Act 2009
• NT: Construction Contracts (Security of Payments) Act 2004

They all do essentially the same thing: they give you the right to issue a formal payment claim and, if you don’t get paid, to apply for fast-track adjudication. The process is quicker and simpler than traditional litigation. It’s designed to keep money flowing through the construction supply chain—and that includes HVAC work.

The key principle is this: you’ve done the work, you deserve to be paid, and you don’t have to wait months for a court hearing to force the conversation.

How the Process Works

The Security of Payment Act process has a clear timeline. Here’s the typical sequence:

1. Issue a payment claim. You send a formal written claim to the head contractor or whoever owes you money. This is not an invoice—it’s a statutory claim under the relevant Act. It must comply with the legislation (include your details, describe the work, state the amount, the date, and reference the contract).
2. Wait for a payment schedule. The respondent (the person who owes you) has a set number of business days to respond. In most states, that’s 10 business days. If they don’t respond, you can move straight to adjudication.
3. Issue a notice of intention to seek adjudication. If the payment schedule is inadequate, unsatisfactory, or doesn’t exist, you send formal notice that you’re going to adjudication.
4. Apply for adjudication. This is where an independent adjudicator reviews the claim, usually on the papers. They make a decision within 10–15 business days (depending on your state). That decision is binding and enforceable immediately—you don’t wait for an appeal.

The whole process can take 4–6 weeks from payment claim to adjudication outcome. That’s dramatically faster than court.

Why It Matters for HVAC Tradies

HVAC work is essential to every build. You’ve installed systems, done service calls, supplied equipment, or fixed breakdowns—and you’ve done it on credit, waiting for payment. That’s normal in construction. But when payment doesn’t come, your business suffers.

The Security of Payment Act exists because legislators recognised that small and medium contractors shouldn’t have to choose between chasing payment through the courts (expensive and slow) or eating the cost (unfair and unsustainable).

A few practical points:

• You don’t need a formal written contract with the head contractor to use the Act—the legislation applies to all construction work relationships.
• Your payment claim doesn’t need a lawyer to prepare it, though the document must meet statutory requirements.
• Many debtors choose to pay or settle rather than face fast-track adjudication, because the cost and visibility of the process creates real pressure.
• If the adjudicator rules in your favour, you can enforce the decision through the courts if necessary—but that’s rare.

How to Get Started

If you’re owed money and the due date has passed, the first step is to gather your paperwork: invoices, contract details, emails confirming the work, payment terms, and the amount outstanding.

Then, draft your payment claim. It needs to be specific and compliant with your state’s legislation. This is where many tradies get stuck—the language and format matter, and mistakes can invalidate the claim.

You can file a payment claim through PayClaim, which automates the process and generates a compliant document for your state. The flat fee is AUD $79. You answer a few questions about the job and the debt, and the system produces a ready-to-send claim that meets statutory requirements.

Once the claim is issued, you follow the timeline outlined above. Keep records of everything—dates sent, emails, responses, schedules of payment.

A Note on Timing

One important thing: most Security of Payment Acts include time limits on when you can issue a claim. In NSW, for example, you generally have 12 months from the date of the last work or supply. In Queensland, it’s similar. Check your state’s legislation or confirm with PayClaim when you start, but don’t sit on it for years. Issue the claim while the debt is fresh and your records are clear.

The Bottom Line

You’re not powerless when someone owes you money for HVAC work. The Security of Payment Act is a practical, designed-for-construction pathway to get paid or force a fair conversation about what’s owed. It’s faster than court, cheaper than hiring a lawyer, and it works because it’s backed by law.

If you’re owed money, don’t wait. Gather your records, prepare your claim, and take action.