
Hot Water System Safety Tips For You and Your Family
It’s important to have a safety-first attitude about your households Hot Water System. Our O’Brien Plumbing experts share their top safety tips.

O’Brien Electrical & Plumbing Coopers Plains are licensed and experienced in all aspects of thermostatic mixing valve (TMV) installation, testing, maintenance, and repair. With over 35 years of plumbing experience across South East Queensland, we deliver reliable, compliant TMV services for residential, commercial, and healthcare environments.
We provide professional service and accurate reporting to keep your property safe and compliant.
A thermostatic mixing valve (TMV) is a device that blends hot and cold water to deliver water at a safe, controlled, and consistent temperature. It plays an important role in reducing the risk of scalding, particularly in environments where children, elderly individuals, or vulnerable people are present.
TMVs are typically set to deliver water between 38–50°C, ensuring safe use without compromising comfort.

In Queensland, a TMV must be tested and serviced every year by an endorsed plumber.
Licensed and endorsed are two different things, and only a plumber who holds both can sign the test off against the Australian Standard.
We provide a complete range of thermostatic mixing valve (TMV) services to ensure your system remains safe, compliant, and operating correctly.
Our experienced team ensures your TMVs are functioning accurately and meet all required standards, helping you maintain a safe environment and avoid compliance issues.
We proudly service Coopers Plains and the surrounding Brisbane southside suburbs.


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For any electrical or plumbing emergency, please call (07) 3277 7345 and follow the prompts to go through to the on-call technician.