The manufacturer says 10 to 12 years. In Palm Beach County, plan on eight. Here is why, and how to tell where your tank sits on the curve.
The Honest Numbers
Across the thousands of tanks we have pulled in Boca Raton, electric units average eight to ten years and gas units seven to nine. Tankless units, descaled annually, routinely reach eighteen. The national averages you read online assume softer water than anything coming out of a Palm Beach County tap.
Why Florida Is Harder on Tanks
Hard water leaves calcium and magnesium sediment at the bottom of the tank. That layer insulates the burner or lower element, forcing longer run cycles, overheating the steel and burning through the glass lining. Coastal salt air adds external corrosion on top of it.
Reading Your Own Tank
Find the serial number on the data plate — the first four digits usually encode the month and year of manufacture. Past year eight, budget for replacement. Past year ten, stop repairing it and get ahead of the flood.
What Actually Extends Life
An annual flush, an anode rod replaced around year four, a working expansion tank, and a thermostat set to 120°F rather than 140°F. Those four things add years for a couple hundred dollars.
Want a Straight Answer for Your Own Tank?
Call (561) 261-2250 and describe your unit. We will tell you honestly whether to repair, replace, or leave it alone another year.