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TMV Commissioning Certificate

The Australian TMV (Thermostatic Mixing Valve) Commissioning Certificate documents the installation and commissioning of TMVs, which blend hot and cold water to prevent scalding at outlets such as showers, baths, and basins. The 45°C limit in Australian healthcare and aged care facilities can only be met with a thermostatic mixing valve to AS 4032.1 or a thermostatically controlled tap, and the National Construction Code sets temperature limits in residential applications too. The certificate captures the valve make, model, set temperature, and test results confirming the valve operates within the required tolerance under AS 4032.1.

AS 4032.1 (Thermostatic Mixing Valves; the 2024 edition superseded the 2005 edition), AS/NZS 3500.4 (Heated Water Services; the 2021 or 2025 edition, whichever the NCC in force in the state calls up), National Construction Code Volume Three B2D5 and B2D6, state plumbing regulationsValid: Annual service and testing recommended

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Sample TMV Certificate certificate

Sample TMV Commissioning Certificate certificate created with CertBox, showing the professional PDF layout with property address, client details, and tmv location, each tmv: make, model, serial number, and type, set temperature and temperature range tolerance

Sample TMV Certificate with fictional data. All personal details shown are fake.

What it covers

  • Property address, client details, and TMV location
  • Each TMV: make, model, serial number, and type
  • Set temperature and temperature range tolerance
  • Cold and hot supply pressures and flow rate
  • Mixed outlet temperature test result
  • Isolation valve and check valve installation confirmation
  • Plumber licence number and commissioning signature

Who needs a TMV Certificate?

Licensed plumbers installing TMVs
Hospitals, aged care facilities, and childcare centres
Residential builders installing temperature control devices required by the NCC
Facility managers responsible for TMV maintenance

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Frequently asked questions about TMV Certificate

Where are TMVs required in Australia?
In healthcare, aged care, early childhood centres and schools the delivery temperature at personal hygiene outlets must not exceed 45°C, and at that limit it has to be held by a thermostatic mixing valve to AS 4032.1 or a thermostatically controlled tap; a plain tempering valve to AS 4032.2 is only good enough where the limit is 50°C. Everywhere else the National Construction Code (NCC Volume Three, B2D5 and B2D6) sets a 50°C limit at personal hygiene fixtures, which can be met with a thermostatic mixing valve, a thermostatically controlled tap, a tempering valve or a temperature limited water heater marked to AS 3498, so a TMV is not the only option in a house.
What temperature should a TMV be set to in Australia?
AS/NZS 3500.4 and the NCC set a maximum of 50°C at the outlet of sanitary fixtures used primarily for personal hygiene (showers, basins and baths) in most buildings, and a lower maximum of 45°C in healthcare and aged-care buildings, early childhood centres, primary and secondary schools, and facilities for the aged, sick or people with disabilities. The commissioning certificate records the set temperature and confirms the tempered outlet is within the required limit.
How often do TMVs need to be serviced and re-tested?
TMV manufacturers and AS 4032.1 recommend annual maintenance and testing to ensure the valve is operating correctly. Healthcare and aged care facilities are typically required to carry out TMV maintenance every 6-12 months as part of their infection control and safety obligations.

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