All hot water systems in new homes are required by Australian plumbing regulations to be fitted with a tempering valve, which functions as a temperature control device.
Hot water is stored at 60°C to hinder the growth of harmful bacteria such as Legionella, but water at this temperature will cause third-degree burns after a mere second of exposure. The tempering valve is therefore a critical safety feature that reduces the hot water temperature to a non-scalding range.
Given its importance, it’s essential to watch out for the following signs of a faulty tempering valve.
How Do You Know If Your Mix Valve Is Broken?
Common symptoms of a faulty mix or tempering valve include the following:
- The Water’s Too Cold
Even though the primary concern is with scalding-hot water, the other extreme—stone-cold water—can also be an indication that the tempering valve is faulty. You might think cold water isn’t a big problem, but the next stream of water could leave you with severe burns. - Low Hot Water Pressure
A hot water system that hasn’t been serviced for a while or is over five years old might have a clogged-up tempering valve due to the build-up of mineral deposits and muck. It’s common for these valves to suffer from corrosion and general wear and tear, which causes reduced hot water pressure. - Leaking Hot Water System
If you notice hot water leaking from or around the system, the tempering valve could be the problem. The valve seal could be faulty or corroded. - Fluctuating Temperature
Does your hot water randomly go from normal to burning hot to cold and then back to normal again? This would be a classic sign that the tempering valve is getting worn out and not performing as it should.
Noticed any of the issues above with your hot water supply? If you have, it’s time to get your hot water system inspected by plumbing professionals.
Call Active Plumbing for a free quote today!
Do Tempering Valves Need to Be Serviced?
Yes, absolutely. Tempering valves are relatively inexpensive parts subject to daily use, which results in wear and tear over time. Regular inspection and servicing are recommended to keep your hot water system in good working order.
How Often Should a Tempering Valve be Replaced?
The general recommendation by most manufacturers is to get the tempering valve inspected annually and replaced every four to five years.
What’s the Difference Between a Tempering Valve and a Thermostatic Mixing Valve?
Both a tempering valve and a thermostatic mixing valve achieve the same function of reducing the hot water temperature to a safe level, but the latter is more accurate and responds more quickly to changes in the incoming water temperature.
While a tempering valve is typically used for standard residential hot water systems, a thermostatic mixing valve is specifically fitted in systems that require more precise control of the water temperature and also larger systems.
Thermostatic mixing valves are specifically designed for facilities used by high-risk individuals, i.e. senior citizens and young kids, such as:
- Hospitals
- Nursing homes
- Aged care centres
- Childcare centres
- Schools
- Public restrooms
Whether you’re in need of an inspection of your hot water system or suspect a malfunctioning tempering valve, call us for a free consultation!
Why Choose Active Plumbing for Your Tempering Valve Inspection or Service
- Hot Water Specialists
We specialise in hot water systems, with in-depth experience in tempering valve issues. - Service Within 1 Hour where possible
and be at your door within 1 hour of your call - Fully Licensed Plumbers
Our licensed and highly experienced plumbers are trusted for their high-quality workmanship and friendly service. - Round-the-Clock Support
Our emergency plumbing services are available 24/7, all year round.
To find out more about our hot water services, call Active Plumbing for a free quote today!
