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Water Heater Care for South Florida Homes: A Small Checklist, a Longer Life

South Florida's mineral-rich water works against water heaters over time. A few minutes of maintenance each year can add years of quiet performance.

By Nanci Gilbert, PA September 28, 2026
Header image for "Water Heater Care for South Florida Homes: A Small Checklist, a Longer Life"

The water heater sits in a corner of the garage or laundry room and rarely gets attention until it stops working. In South Florida, mineral-heavy water makes the yearly checklist more important than most homeowners realize. A few simple habits keep the tank performing and often extend its life by years.

Flush the tank once a year

Sediment settles at the bottom of the tank and slowly works against the heating element. Draining a few gallons through the valve once a year, following the manufacturer's directions, clears much of it. If you are not comfortable with the valve or the gas connection, a licensed plumber can do it in a short visit.

Keep the temperature at 120 degrees

A setting around 120 degrees Fahrenheit is hot enough for most households and gentle on the unit. Higher settings heat the water faster but also work the tank harder and raise the risk of scalding. If your dial has been left higher, a small adjustment once can save energy and wear for years.

Test the pressure relief valve

The temperature and pressure relief valve is the safety valve of the whole system. Once a year, lift the lever briefly: water should flow and then stop cleanly. If it leaks, drips, or sticks, the valve is inexpensive to replace. Catching that small failure early prevents a much larger one later.

Know your water heater's age

Most tank units last roughly 8 to 12 years depending on water quality and care. If yours is approaching that range, plan the replacement before it fails, not after a cold morning forces the decision. The date on the unit's label tells you the year it was built, a useful fact for buyers and sellers alike.

Keep the area clear and the air moving

The space around the unit should stay clear of stored boxes, paint cans, and chemicals. A little airflow around the tank helps it shed heat and moisture, which matters in a humid garage. It also makes the yearly maintenance, and any future service call, dramatically easier.

Nanci Gilbert, PA is a South Florida realtor who guides buyers and sellers across Miami-Dade and Broward. Questions about this topic? She answers every message within one business day.