Most homeowners never think about their water heater until there’s a puddle forming underneath it. Unfortunately, by the time a leak appears, the damage is already done.
Water heater failures are one of the most common sources of residential flooding — often releasing dozens of gallons of water in just minutes. The good news? A little maintenance goes a long way toward preventing a costly water damage disaster.
The Hidden Risk Inside Your Tank
Every time your water heater runs, minerals and sediment from the water supply settle at the bottom of the tank. Over time, that buildup hardens into a thick layer that traps heat, causes the tank to overheat, and leads to cracking or corrosion.
As pressure builds, fittings can fail or the tank itself can rupture — often when no one’s home to notice. That’s why regular maintenance is critical not just for energy efficiency but for preventing a flood that could ruin floors, drywall, and insulation.
How (and When) to Drain Your Water Heater
Experts recommend draining and flushing your water heater once per year. Here’s how to do it safely:
- Turn off power to the heater (electric or gas).
- Connect a garden hose to the drain valve near the bottom of the tank.
- Run the other end of the hose to a floor drain or outdoors.
- Open a hot water tap somewhere in the house to relieve pressure.
- Open the drain valve and let the tank empty completely.
- Once drained, briefly turn on the cold water supply to flush remaining sediment.
- Close the valve, disconnect the hose, and restore power.
If you notice excessive rust, milky water, or sediment that doesn’t clear, it may be a sign the heater is nearing the end of its life.
Signs Your Water Heater Might Be Failing
A water heater rarely fails without warning. Be alert for:
- Rusty or discolored hot water
- A metallic taste in tap water
- Rumbling or popping noises from the tank
- Water pooling underneath the unit
- Hot water that fluctuates in temperature
Ignoring these signs could lead to a full rupture, especially if your tank is more than 8–10 years old.
When a Leak Happens
Even a small leak can quickly spread beneath floors, into drywall, and across adjacent rooms. Once that happens, moisture becomes trapped, creating the perfect conditions for mold growth and hidden structural damage.
MSI provides 24/7 emergency water damage restoration, complete with moisture mapping, structural drying, and insurance documentation. We help homeowners return their property to pre-loss condition as quickly and safely as possible.
The Bottom Line
Routine maintenance may not be exciting, but it’s one of the easiest ways to prevent major water damage. Take 30 minutes once a year to drain and inspect your water heater — it could save you thousands in repairs. And if the unexpected does happen, MSI is ready to respond with certified technicians, detailed reporting, and honest communication every step of the way.