The unit is past 8 to 10 years old
Why it matters: Most tank water heaters are built for roughly this lifespan. Past that point, internal corrosion and wear on components like the heating elements or gas valve become more likely, even if the unit is still technically running.
Our take: Age alone isn't always a reason to replace, but paired with any other sign on this list, it usually tips the decision toward a planned replacement instead of waiting for a failure.
You're facing a second major repair
Why it matters: One repair on an otherwise sound unit is often worth it. A second significant repair within a short span usually means the unit is entering a pattern of failure that will keep costing money.
Our take: We'll show you the cost of the repair next to the cost of replacement so you can see which one actually makes financial sense before deciding.
The tank itself is leaking, not a fitting or valve
Why it matters: A leak from a loose drain valve or fitting is repairable. A leak from the tank's steel shell means the metal has corroded through, and that's not something that can be patched or sealed.
Our take: If the leak is coming from the tank itself, we treat it as an emergency replacement rather than attempting a temporary fix that won't hold. See our emergency service if it's leaking right now.
Rusty water is coming from every hot water tap
Why it matters: Rust at a single fixture can point to that fixture's plumbing. Rust from every hot tap in the house, especially paired with an older unit, usually means the tank itself is corroding from the inside.
Our take: We confirm the source before recommending replacement, but a corroding tank isn't something an anode rod swap can reverse once it's this far along.
The household keeps running out of hot water
Why it matters: Sometimes this is a failing component, but often it simply means the original tank size no longer matches how the home is used, more people, more showers, more demand than when it was installed.
Our take: A properly sized replacement, tank or tankless, is usually a more lasting fix than repeatedly repairing a unit that was undersized from the start.