Water Heater Leaking from Top — Connection or Fitting Issue
Back to all problems
Common Water Issue in BC

Water Heater Leaking from Top — Connection or Fitting Issue

Water leaking from the top of a water heater usually indicates a loose connection or failed fitting rather than a tank failure. Quick repair prevents water damage.

Possible Causes

  • Loose water line connection at top of heater
  • Failed dielectric union between pipe and tank
  • Leaking temperature/pressure relief valve
  • Leaking drain valve at bottom but appears to come from top
  • Condensation on cold water line dripping down

Recommended Steps

  • 1Wipe all connections dry and observe to identify exact leak source
  • 2Tighten water line connections gently — do not overtighten
  • 3Check T&P valve for discharge — may need replacement
  • 4Inspect dielectric unions for corrosion or failure
  • 5If connections are all dry, condensation is likely — insulate cold water line

Need Professional Help?

Don't let a small leak become a big problem. Contact LeakInspections.ca — a division of Anyleak.ca and Leak.ca — for expert diagnosis.