Water Heater Maintenance: 4 Tasks That Add Years of Life

A water heater quietly does its job until the day it doesn't — and most early failures come down to skipped maintenance. Four simple tasks keep yours running longer and safer: flush it once a year, test the pressure-relief valve, set the temperature to 120°F, and insulate the first few feet of pipe.

Why should I flush my water heater?

Sediment from your water settles to the bottom of the tank, where it insulates the burner, wastes energy, and corrodes the tank from the inside. Flushing once a year drains that grit out. Turn off the power or gas, connect a hose to the drain valve, and let the tank empty until the water runs clear. It's the single biggest thing you can do for tank life.

What does the pressure-relief valve do?

The temperature-and-pressure (T&P) relief valve is a safety device that releases pressure if the tank overheats — without it, a failing water heater can become dangerous. Test it once a year by lifting the lever briefly and letting water discharge, then snap it closed. If it doesn't release or won't reseal, replace it (or call a plumber).

What temperature should a water heater be set to?

120°F is the sweet spot — hot enough to kill bacteria and run your home, cool enough to prevent scalding and save energy. Many heaters ship set higher. Turning it down to 120 reduces the risk of burns (especially with kids or older adults) and trims standby heat loss.

Does insulating water heater pipes help?

Yes. Insulating the first few feet of hot- and cold-water pipe at the tank reduces heat loss, so water arrives hotter and the heater cycles less. Foam pipe sleeves cost a few dollars and slip right on. Pair it with sealing drafts elsewhere for a noticeably lower energy bill.

Track the yearly flush

The hard part of water-heater care is remembering the once-a-year tasks. Log the date you last flushed it and tested the valve so you stay on schedule and can show the history at sale time. Okoniq Property Hub keeps it with the rest of your home maintenance records, in one private place in your browser.

Frequently asked questions

How long does a water heater last?

A conventional tank lasts about 8–12 years; tankless units often 20+. Regular flushing and a working anode rod meaningfully extend that.

Is it safe to do this myself?

Flushing and setting the temperature are homeowner-friendly. If you smell gas, see corrosion around fittings, or the T&P valve fails, call a licensed plumber.

Okoniq Property Hub helps homeowners and small landlords keep maintenance, bills, and contractor info in one calm place. Get started free.