Why Tempering Valves is Hot Stuff in Plumbing

plumber checking temperature of kitchen sinks: fixing tempering valves

Here’s a hot topic, we often talk about a lot here at X-Factor Plumbing & Earthmoving – Tempering Valves!

You may be wondering:

“What is a Tempering Valve and What Does it Do?”

Don’t worry, we’ll try to explain it and show you when it’s time to call your trusty plumber.

tempering valve with blue top

Tempering valves blend hot and cold water, in your hot water system, to maintain a safe and consistent temperature at your faucet. They’re responsible for making sure the water that comes out of your taps is not too hot, not too cold, but just right – like Goldilocks’ porridge!

When working correctly these valves are crucial for making sure no one in your household gets a nasty surprise when they take their morning shower!

Issues with Tempering Valves

Often issues can crop up, here are a few things to look out for: 

    • Temperature Fluctuations: Sometimes, you might notice your shower going from hot to cold or vice versa. This inconsistency can be a real mood-killer, especially when you’re trying to relax.
    • Leaks and Drips: Nobody likes a dripping faucet, right? Leaky tempering valves can waste water and lead to higher bills.
    • Scaling and Buildup: Over time, mineral deposits can accumulate within the valve, affecting its performance. This can lead to less efficient temperature control.
    • Maintenance Neglect: Like any superhero, tempering valves need a little love too. Neglecting regular maintenance can lead to problems down the line.

How to Fix Temperamental Tempering Valves

We’d love to tell you how to fix your valves however, in these circumstances it’s best if we show you.

Most of the fixes will require turning off your hot water system, removing the valve and giving it a good clean; adding a descaling solution to prevent mineral build up; maintenance; fixing the leaks caused by worn-out washer or loose connections; or replacements. These really are things we recommend you call a professional for (that’s us!).


So, if you think the temperature in your hot water system is playing up or you are noticing any leaks, it’s time to give us a call – we’re happy to help get your hot water back to “Just Right”.