Leaking relief valve, failed expansion tank, or pressure issues? We fix the real cause — often without replacing the entire heater.
A water heater that drips, bangs, or releases water from its relief tube doesn't always need replacement. More often than not, the heater itself is fine, and a $200 component on the side of it — the expansion tank or the pressure relief valve — is the actual problem.
The expansion tank and the temperature-and-pressure relief valve are the two parts that fail most often, that get overlooked most often, and that cause the most expensive misdiagnosis in Austin water heater service.
Some "water heater leaking" reports are actually normal operation or simple fixes.
Dripping from the relief tube
This is often a thermal expansion issue, not a failed heater.
Banging or rumbling sounds
Usually sediment buildup — solved with a flush.
Water around the base
Could be fittings, drain valve, or a leak from above.
We size the tank correctly to your heater capacity and system pressure. Half-day job.
Never cap a leaking TPR valve. Proper replacement restores safety.
Full check of relief valve, expansion tank, pressure, venting, and more. Insurance-ready report.
30-minute visit to test if your tank is functioning or if one is even present.
"Another company told me I needed a whole new unit. Reliant diagnosed a failed expansion tank. Saved me $3,000."
— Greg Fuhrman, Austin
"They flushed the heater, replaced the TPR valve, and explained everything clearly. Very thorough."
— Sandra Halverson, Austin
A TPR valve that drips isn't broken. When water heats and expands in a closed system, pressure builds. Without a working expansion tank, the relief valve opens to protect the system.
The fix is usually installing or replacing the expansion tank — not replacing the valve or the entire heater.
If your home has a pressure regulator or backflow preventer, code usually requires one.
Five to ten years. Annual air pre-charge checks help extend life.
It's a warning sign. The valve is doing its job — the underlying pressure issue needs fixing.
No. Rumbling is usually sediment. We can address both during the same visit.
Get an accurate diagnosis of your expansion tank and TPR valve. Often a small fix saves a full replacement.
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