Thermal expansion of water and the role of an expansion tank

Why Does My Expansion Tank Make Noise And What Does It Mean?

What Does An Expansion Tank Do? Why is it Important? | Joe the Plumber

🔧 Boiler Pressure Help – Vaillant Boilers 🔧 Noticing your heating not working properly? One common cause is incorrect boiler pressure. Here’s a quick guide for Vaillant boilers: ✅ Correct Pressure Range: Your boiler pressure should normally sit between 1.0 – 1.5 bar when the system is cold. ⚠️ If Pressure is Too Low ( 2 bar): • Bleed a radiator to release excess pressure. • Make sure the filling loop is fully closed. 💡 Tip: Always check the gauge after your heating has been on – slight rises