In my 61 years as a plumber in Wausau, Wisconsin, I've replaced more water heaters than I can count. The most common reason homeowners find themselves with no hot water? They waited too long. Here's what you need to know about water heater lifespan — and when it's time to act before your unit fails.
A standard tank water heater — gas or electric — typically lasts 8 to 12 years in Wisconsin homes. Marathon County's moderately hard water accelerates sediment buildup, which reduces efficiency and shortens lifespan if the tank isn't flushed annually. If your tank is 10 years old, start budgeting for replacement even if it's still working.
Tankless water heaters last significantly longer — typically 15 to 20 years with proper maintenance. The trade-off is higher upfront cost and more complex installation, but lower operating costs over time. For Wausau homeowners planning to stay in their home long-term, tankless often makes economic sense.
Don't wait for a flood to replace your water heater. Watch for: rust-colored or metallic hot water (internal corrosion), popping or rumbling sounds (sediment buildup), inconsistent hot water temperature, visible moisture or rust around the base, or any water heater over 10 years old showing performance issues.
Annual sediment flushing can add years to your tank's life — especially important with Wausau's hard water. I recommend flushing once per year and inspecting the anode rod every 3–5 years. An anode rod that's been consumed by corrosion is your tank's early warning system — replace it and your tank keeps protecting itself.
If your water heater is showing any of the warning signs above, call (715) 675-2000 for a free assessment. I'll tell you honestly whether it needs repair or replacement — no upselling, no pressure. That's been the Genrich way since 1964.
61 years serving Wausau and Marathon County. Free estimates. Master Plumber on every job.
Tank water heaters typically last 8–12 years in Wisconsin homes. Hard water conditions in Marathon County can shorten this to 8–10 years without annual maintenance. Tankless units last 15–20 years.
Look for the serial number on the label on the unit. Most manufacturers encode the manufacture date in the serial number — the first two digits often represent the year. Call (715) 675-2000 and Bob can help you decode it.
Generally not for major repairs like a failed heating element on a 10+ year old electric unit, or a cracked tank. Minor repairs (thermocouple, pressure relief valve) are worth doing if the tank itself is sound.
Bob answers personally. Expect a same-day callback Mon–Fri 7 AM–7 PM.
