Thermostatic Mixing Valve (TMV) Testing Melbourne: Scald-Prevention Essentials

Protect your facility with thermostatic mixing valve testing by L&C Harding Plumbing—Melbourne experts in safe, compliant hot water systems.

Hot tap water can cause severe burns in just one second at 60 °C, making scald prevention a top priority. This risk is particularly high in Melbourne’s hospitals, schools, and aged-care facilities. That’s why Victorian plumbing regulations and regular thermostatic mixing valve testing are essential to maintain safe water temperatures and legal compliance.

At L&C Harding Plumbing, we help Melbourne property owners, facility managers, and maintenance teams stay compliant and protect the people who rely on their hot-water systems every day.

What Is a Thermostatic Mixing Valve (TMV)?

A thermostatic mixing valve is a precision device that blends hot and cold water to deliver a constant, safe outlet temperature — typically 45 °C or 50 °C depending on the application. Unlike a standard tempering valve, a Thermostatic Mixing Valve reacts instantly to temperature or pressure changes, reducing the risk of scalding while maintaining comfort.

These valves are required in:

•  Hospitals and healthcare centres
•  Aged care and disability facilities
•  Childcare centres and schools
•  Accessible bathrooms in commercial or public buildings

Thermostatic Mixing Valve Testing: The Key to Scald-Prevention Compliance

Even the best valves drift out of calibration over time. That’s why thermostatic mixing valve testing is essential to meet AS 4032.3 – the Australian Standard governing field testing and maintenance.

Regular TMV testing ensures:

•  The outlet temperature remains within the safe range
•  The valve shuts off quickly if the cold supply fails
•  Internal strainers and filters stay clean and effective

Only licensed plumbers with TMV accreditation can legally carry out this work in Victoria. At L&C Harding Plumbing, our team is certified for TMV servicing, ensuring every test meets Australian Standards and Victorian Building Authority (VBA) requirements.

Melbourne Regulations and Testing Frequency

Victorian building codes mandate maximum outlet temperatures of:

•  45 °C for healthcare, aged-care, childcare, and school facilities
•  50 °C for most other residential and commercial buildings

To remain compliant, TMVs must be tested at least every 12 months, or more often in high-risk settings. This routine maintenance not only prevents scalding but also supports Legionella control, since hot water is stored at ≥ 60 °C and safely tempered at the outlet.

What to Expect During TMV Testing and Servicing

When you book a TMV service with L&C Harding Plumbing, our licensed specialists follow a precise, step-by-step process to ensure full compliance. We test outlet temperatures, check failsafe performance, clean internal components, and record every result in a TMV compliance register. Our service is efficient, fully documented, and designed to minimise downtime in busy facilities.

Keep Your Water Safe – Stay Fully Compliant

Scald prevention starts with reliable plumbing and regular thermostatic mixing valve testing. Whether you manage a healthcare facility, school, or commercial property, you can count on L&C Harding Plumbing to keep your systems compliant, efficient, and safe all year round.

Check out our plumbing services or contact us to schedule an inspection and keep your hot-water system performing at its best.

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