Boiler frequently loses pressure and needs to be topped up with water

Safety first: Turn off power if pressure drops very low to prevent damage.

• Inspect visible piping: Look for damp spots, corrosion, or staining around boiler connections, valves, and radiators.
• Check relief valve and discharge: Ensure the relief discharge pipe is not slowly dripping into a drain where it may go unnoticed.
• Examine automatic air vents: Check for signs of weeping around vent caps. Replace leaking vents.
• Pressure test: If no obvious leaks are found, a professional should perform a pressure test to locate hidden leaks in walls or under floors.