10/11/2026
A small drop in boiler pressure over time can be normal, especially if your heating system hasn't been used for a while. However, if you're regularly having to top up the pressure, it's often a sign that something isn't quite right.
Common causes can include:
✅ Small leaks within the system
✅ Faulty valves or components
✅ Issues with the expansion vessel
✅ Recent radiator bleeding
✅ Wear and tear over time
If your boiler pressure keeps dropping, it's worth getting it checked before a minor issue develops into a larger repair
Need help with your boiler or heating? Speak to our team of friendly experts.
📞 020 8722 3439
🌐 www.smithandbyford.com
📍 36 The Broadway, Cheam Village, Sutton, SM3 8BD