Why your water heater might be leaking (and how to fix it)
In short: A leaking water heater is often a symptom of pressure issues rather than just a broken tank. This guide walks through the diagnostic steps and the specific installation required to stop the drip.
Plumbing expert Richard Trethewey explains that many leaks originate from a malfunctioning temperature and pressure (T&P) relief valve. If the T&P valve is functioning correctly, the issue likely stems from a lack of an expansion tank in systems with pressure reducing or check valves.
The repair involves shutting off the main water supply, draining the heater below the pipe level, and installing a potable water-rated expansion tank using copper pipe and push fittings. This setup manages internal pressure to prevent leaks.
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Sources
- Summary by Intellect · source: How to Diagnose and Repair a Leaking Water Heater | Ask This Old House
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