Free diagnostic tool
Type your problem — get a diagnosis
Free · Built by a Gas Safe Engineer
Diagnose your plumbing
problem in seconds.
🔧A clear fix you can do yourself — step by step
💬A plain-English explanation to take to a plumber, with a rough cost estimate
⏱Takes 2 minutes
✓Completely free
🔒No sign-up
or describe your problem
More tools
⭐Pro Guides
Fix it yourself — save £100s
Step-by-step repairs from a Gas Safe engineer. Unlock all for less than a coffee a month.
→Zone valve not opening — no heating in one areasaves ~£180
→Thermostatic Cartridge Replacement (TMV Bar Valve)saves ~£90
→Shower Pump Not Working — No Pressure or Flowsaves ~£350
→Replacing a mixer tap cartridgesaves ~£40
→How to install an outdoor tapsaves ~£120
Online Courses
Learn how your heating & plumbing works — from £14.99
Plumbing Ebooks
5 practical PDFs — instant download — from £2.99
🚨Plumbing emergency?