18 February 2026
Tempering Valve Replacement Tarragindi, Brisbane: 125L System
Is Your Hot Water Running Too Hot or Too Cold?
Is there anything worse than stepping into a shower expecting a warm start to the day, only to be hit with freezing cold water? Or perhaps even more dangerous, water that comes out at a scalding temperature? Inconsistent water temperature is often the first sign that your hot water system requires attention.
For many homeowners, the issue isn’t the tank itself, but the smaller, critical components that control the flow and temperature. Recently, the team at Fallon Solutions attended a property to perform a hot water system repair Tarragindi residents needed urgently. The job involved a standard 125L electric system that was struggling to regulate temperature, posing a safety risk to the household.
If you have noticed fluctuations in your water temperature, read on to understand what went wrong and how we fixed it.
The Problem: Signs of a Malfunctioning Valve
Upon arriving at the Tarragindi residence, our technicians inspected the 125L electric hot water unit. The homeowner had reported that the water was no longer staying at a consistent temperature. In some instances, the water was dangerously hot, while at other times, the hot tap would only produce lukewarm water.
These are classic symptoms of a malfunctioning valve. Specifically, the issue was identified with the tempering valve.
What is a Tempering Valve?
In Australia, hot water must be stored at a minimum of 60°C to prevent the growth of harmful bacteria like Legionella. However, water at this temperature can cause severe scalding in seconds. A tempering valve is a mandatory safety device that mixes hot water from the tank with cold water to ensure it is delivered to your taps at a safer, maximum temperature (usually 50°C).
When this valve fails, you might experience:
- Reduced hot water pressure: The flow of hot water becomes a trickle.
- Water that is too hot: The valve fails to mix in cold water, risking burns.
- Water that is lukewarm: The valve allows too much cold water into the mix.
If you find yourself searching for “hot water repair near me,” there is a high chance a faulty valve is the culprit.

The Solution: Tempering Valve Replacement Tarragindi
Once the diagnosis was confirmed, our plumbing team went to work. The goal was to restore safety and functionality to the 125L system efficiently.
Here is a breakdown of the steps taken during this tempering valve replacement Tarragindi job:
- System Isolation: First, we isolated the water supply and electricity to the unit to ensure a safe working environment.
- Removal of Faulty Components: We carefully removed the old, seized tempering valve. Over time, mineral deposits and general wear and tear can cause these valves to stick, rendering them useless.
- Installation of High-Quality Parts: We installed a brand new, Australian Standard-approved high-performance tempering valve. We also inspected and replaced associated duo valves where necessary to ensure the entire inlet system was watertight and functioning correctly.
- Testing and Calibration: Once the new parts were fitted, we re-pressurised the system. Crucially, we tested the water temperature at the nearest tap outlet to ensure it was delivering water at a safe and compliant 50°C.
By addressing the specific component failure rather than suggesting a full system replacement, we provided a cost-effective solution that extended the life of the customer’s existing 125L unit.
The Benefits for the Homeowner
Getting on top of hot water temperature issues early offers significant benefits beyond just a comfortable shower. By replacing the valves on this system, the homeowner gained:
- Restored Safety: The risk of accidental scalding has been eliminated, which is particularly vital for households with young children or the elderly.
- Peace of Mind: Knowing the hot water system is compliant with Australian Standards and functioning correctly reduces the stress of potential plumbing emergencies.
- System Longevity: Replacing faulty valves reduces strain on the rest of the hot water unit, potentially adding years to the life of the 125L tank.
- Consistent Comfort: No more nasty surprises in the shower—just consistent, reliable hot water.

Why Choose Fallon Solutions?
When it comes to plumbing and electrical needs, Fallon Solutions has been a trusted name in South East Queensland for over 60 years. We understand that hot water issues can be disruptive, which is why we prioritise prompt, professional service.
Our team is fully licensed, trained in the latest industry standards, and equipped with fully stocked vans. This means we can often complete repairs, such as valve replacements, on the spot without needing to source parts. whether you are in Tarragindi or the wider Brisbane area, we are committed to getting the job done right the first time. To learn more about our hot water services, view our hot water trade area.
Prevent Your Water from Running Cold
Ignoring a small leak or a temperature fluctuation can lead to total system failure or safety hazards. If your hot water system is acting up, a simple valve replacement might be all you need to get back to normal.
If you’re experiencing issues with your hot water in Tarragindi or surrounding suburbs, don’t wait for the water to run cold. Contact the experts at Fallon Solutions today to schedule an inspection. Call now on 1300 054 488 – We Can Be There Today! If you prefer to send an enquiry contact us here.