Overview
What is a TMV?
A thermostatic mixing valve — commonly called a TMV — blends hot and cold water to deliver water at a controlled, safe outlet temperature at fixtures used by vulnerable people or the general public. TMVs are installed where scalding risk must be managed and where service records matter for compliance and insurance purposes.
TMVs are mechanical devices. Over time they can drift out of calibration, the thermostatic cartridge can degrade, or the valve can fail to respond correctly to pressure and temperature changes. Regular testing is required to verify that the valve is actually doing what it is supposed to do.
Why TMV testing matters
The risk of untested or failing TMVs.
A TMV that is out of calibration or failing may be delivering water at temperatures that are too hot — creating scalding risk at fixtures used by people who may not be able to react quickly enough, including young children, elderly residents and people with limited mobility or cognitive awareness.
Beyond the immediate safety risk, property managers and facility operators who do not maintain TMV testing records are exposed to regulatory and liability risk. Where a scalding incident occurs and testing records cannot be produced, the consequences for the operator can be significant.
Suitable sites
Who commonly needs TMV testing in Brisbane?
Schools and childcare
Amenities, basins, change rooms and wet areas used by children where scalding risk must be controlled and maintenance records must be kept current.
Aged care and healthcare
Sites where residents, patients and occupants may have limited ability to react to hot water temperature. TMV compliance is a critical part of duty-of-care obligations.
Commercial and managed properties
Commercial buildings with public amenities, managed properties and strata sites where TMVs have been installed at common-area or public fixtures.
Property owners and managers
Maintenance and testing responsibilities.
Sites with TMVs should maintain accurate records of testing, service, maintenance and any repair or replacement action taken. The specific testing frequency and requirements vary by site type, applicable standards and regulatory setting.
GemArk provides practical testing and plain-English reporting so owners and facility managers can see what has been checked, what the outcome was, and what needs attention — without needing to interpret technical compliance language themselves.
Testing process
How GemArk handles TMV testing.
1. Confirm valve locations and site access
We confirm the site address, number of known valves, access arrangements and any existing service history or maintenance register.
2. Test and verify each valve
Outlet temperature is checked and recorded for each valve. Visible valve condition, accessibility and any obvious maintenance issues are also noted.
3. Report the results clearly
You receive a practical report clearly noting whether each TMV passed, failed or requires further action — suitable for your compliance records.
FAQ
Common TMV testing questions.
What is a TMV and why does it need testing?
A TMV blends hot and cold water to deliver a controlled outlet temperature at fixtures used by vulnerable people. TMVs are mechanical and can fail or drift over time. Regular testing verifies the valve is functioning correctly and providing the protection it is installed to deliver.
How often do TMVs need to be tested?
Frequency depends on site type and applicable standards — healthcare and aged care sites typically require more frequent testing. GemArk recommends checking the requirements for your specific site and keeping service records current.
Which Brisbane sites need TMV testing?
Schools, childcare centres, aged care facilities, hospitals, medical clinics, commercial properties with public amenities and managed properties where vulnerable people use hot water fixtures.
What happens if a TMV fails the test?
A failing TMV should be serviced, adjusted or replaced before returning to service. GemArk's reports clearly identify which valves passed, which failed and what action is recommended.
Request a quote
Book TMV testing in Brisbane.
Send the property address, number of known TMVs, site contact details and preferred timing. Include any existing maintenance register or service history if available.
Phone: 0431 502 032
Email: info@gemark.com.au
Contact GemArk