Water Heater Maintenance: A Homeowner's Guide for the Inland Empire
A water heater that gets occasional attention tends to give warning before it fails rather than failing without notice. This guide covers what homeowners in Riverside County and San Bernardino County can check themselves, what should be left to a licensed plumber, and how hard water, which is a real factor in this region, affects both tank and tankless units differently.
Why hard water makes maintenance matter more here
Water throughout Riverside County and San Bernardino County carries a heavy mineral load, calcium and magnesium dissolved in the supply. In a tank water heater, those minerals drop out of suspension as the water heats and settle as sediment on the bottom of the tank, where they insulate the burner from the water it’s meant to heat. The popping and rumbling sounds a tank heater sometimes makes are caused by water bubbling up through that layer of sediment.
In a tankless unit, the same minerals deposit as scale directly on the heat exchanger, the component that does the actual heating. Scale reduces efficiency, can trigger error codes, and shortens the working life of the unit if it goes unaddressed. Hard water is a common reason tankless water heaters in the Inland Empire underperform or fail early.
Neither problem develops overnight, and neither is inevitable, but both are more relevant here than in regions with softer water supply. Regular attention and periodic professional service are what keep both types of unit performing as intended.
What you can check yourself
These are visual and sensory checks, no tools, no opening panels, no touching components. Their purpose is to catch early warning signs, not to perform maintenance.
Around the base
Look for moisture, standing water, or rust staining on the floor around the unit. A dry base is normal. Pooling water or rust streaks at the bottom of the tank are a sign the tank may be corroding from the inside. That warrants a call to a plumber.
Sounds from the unit
Popping or rumbling from a tank water heater usually indicates sediment on the burner surface. Some noise is common on units with hard-water buildup, but sounds that are new, persistent, or getting louder are worth having a plumber look at.
Hot water output
Notice whether you are running out of hot water sooner than before, whether the water takes longer to reheat between uses, or whether the temperature at the tap is inconsistent. Any change in hot water behavior can point to a component that needs attention.
Visible corrosion on fittings
Look at the pipes, fittings, and connections above and around the tank without touching them. Rust-colored staining, mineral crust, or visible corrosion on the pressure relief valve or inlet and outlet connections are signs a plumber should assess.
Before any hands-on work
Hot water under pressure is the main hazard around a water heater. Before any hands-on work, not just opening panels, but anything beyond the visual checks above, know where the gas shutoff for the unit is and where the electrical breaker is, and make sure they are off. Even apparently minor work can result in contact with scalding-hot water if those supplies are still active.
If you smell gas near the unit: leave the house immediately. Do not touch light switches, outlets, or appliances on the way out. Call your gas utility or 911 from outside. Do not re-enter until the utility or emergency responders tell you it is safe.
What to leave to a licensed plumber
These tasks involve components, pressures, or temperatures where an error can cause injury or damage. They are plumber work, not DIY tasks.
Gas and electrical components
Gas-fired water heaters involve the gas supply line, gas valve, burner assembly, thermocouple, and pilot light. Electric units involve the heating elements, thermostats, and wiring connections. Any diagnosis, adjustment, or repair of these components should be done by a licensed plumber. This is not a matter of tool availability. It is a matter of safety and code compliance. Gas and electrical work done incorrectly can cause fires, carbon monoxide exposure, or electrocution.
T&P valve, flushing, and anode rod
The temperature and pressure relief valve is a safety device that releases pressure if the tank overheats. Testing it involves manually triggering a discharge of hot water, which is safe on a valve in good condition but can cause a corroded or worn valve to fail to reseat, leaving it dripping. Unless you know the valve’s condition, leave testing to a plumber.
Tank flushing involves connecting a hose and draining hot water from the tank under pressure, a scalding risk if handled without care. The anode rod requires draining the tank and using the correct tools. Both are routine service tasks when a plumber does them; both carry real hazards if attempted without experience.
Tank vs. tankless: how maintenance differs
The two types of water heater have different maintenance needs because they are affected by hard water in different ways.
Tank water heaters
Hard water mineral settles to the bottom of the tank as sediment. Over time, that layer grows and reduces the effective capacity of the tank while making the burner work harder. Flushing the tank, a service task that removes the accumulated sediment, is the primary maintenance intervention for a tank unit in a hard-water area. Visual signs like popping or rumbling sounds and slower recovery are early indicators that the tank has buildup worth addressing.
Tankless water heaters
With no tank, there is nowhere for sediment to collect. Instead, scale builds directly on the heat exchanger, the component that heats water on demand. Scale buildup reduces efficiency and can cause error codes or reduced flow. Descaling flushes the heat exchanger with a solution that dissolves mineral deposits. Hard water in the Inland Empire makes descaling an important part of tankless maintenance.
Signs a water heater may need service or replacement
Some of these signs point to a repair; others point to replacement. A plumber can tell you which after looking at the unit.
- Water pooling at or around the base of the tank. A leaking tank usually means replacement.
- Rusty or discolored water at the hot tap, which can indicate internal corrosion
- Popping or rumbling sounds, especially if they are new or worsening
- Hot water running out noticeably faster or the unit taking longer to recover
- Visible rust or corrosion on the T&P valve, fittings, or connections
- Error codes or pilot light issues that keep returning after being addressed
A leaking tank usually means replacement. For everything else, a plumber can diagnose whether the issue is a component that can be fixed or a unit that has reached the end of its service.
Beehive Home Care Club
Biz-E-Bee’s Beehive Home Care Club includes an Annual Water Heater Flush, standard and tankless, when condition allows. It improves efficiency and extends life.
Water heater service across Riverside and San Bernardino County
Biz-E-Bee Plumbing & Rooter (CSLB #1158584, B and C-36) repairs, replaces, and services tank and tankless water heaters across Riverside County and San Bernardino County. Call or book online for an in-person assessment.
Frequently asked questions
Need your water heater checked?
A licensed plumber can inspect it and tell you what it needs. Call or book online.