A failing water heater never picks a convenient moment. This guide covers how to spot the warning signs, when a repair still makes sense versus when it’s time to replace, which type of water heater fits your home, and exactly what replacement costs—and what’s still covered—in 2026.
Key Takeaways
- A standard tank replacement typically runs 900-3,100 installed. Tankless costs more upfront (1,400-5,600) but lasts nearly twice as long.
- The federal water heater tax credit expired December 31, 2025. Tacoma Power’s Electric Hybrid Water Heater rebate—up to $2,500 for income-qualified households—is one of the few incentives still active in 2026.
- Most tank water heaters last 8–12 years. If yours is past year 10 and needs a repair, replacement is almost always the better financial call.
- Sizing matters as much as type: an undersized unit runs out of hot water mid-shower, no matter how new it is.
Tankless systems run 15 to 20. Heat pump models fall in between at 10 to 15. So the real question isn’t if a replacement is coming—it’s whether you plan it, or the unit decides for you, usually at 6 a.m. on a Tuesday.
The Signs Your Water Heater Is Telling You It’s Done
Water heaters give warning signs before they fail. Each one points to a specific problem.
Rusty or Metallic-Smelling Water
This usually means the anode rod has worn out—the sacrificial metal rod inside the tank designed to corrode instead of the tank itself. Once it’s gone, the tank starts rusting from the inside. It’s repairable if the rod just started to corrode, but if caught late, the whole tank may already be rusted through.
Popping or Rumbling Noises
These come from sediment that’s hardened on the bottom of the tank. Trapped water boils underneath it and pops when the burner or element fires. Left alone, it can crack the tank lining.
Inconsistent Hot Water
A thermostat or heating element may be failing. Or sediment has eaten into the tank’s real capacity, so your “50-gallon” tank no longer holds 50 gallons.
Visible Leaks
A damp spot, a puddle, moisture on the tank’s exterior—any of these mean the tank itself is compromised. Once a tank leaks, repair isn’t an option. It’s replacement.
Rising Energy Bills
This is the quiet version of all of the above. The unit is working harder to deliver the same amount of hot water.
Repair or Replace? Here’s the Math
Not every symptom above means a new water heater. A single component failure—a thermostat, a heating element, an anode rod that just started to corrode—is often a straightforward water heater repair, especially on a unit under 8 years old.
The math shifts once two things line up: the unit is past 10 years old, and the repair costs more than a small fraction of a new unit.
A $300 repair on a 4-year-old tank makes sense. A $500 repair on a 12-year-old tank that already needed a service call last year usually doesn’t—you’re extending the life of a unit that’s already near the end of its lifespan, with no guarantee the next failure isn’t six months away.
Replacing on your own schedule also costs less than replacing in an emergency. Same-day swaps typically run 15–25% above a planned installation.
Tank, Tankless, or Heat Pump: Choosing Your Replacement
If you’ve landed on replacement, the next decision is which type.
Standard Tank
Stores 40–80 gallons of heated water and reheats it as it’s used. Most affordable upfront, and the simplest like-for-like swap. The tradeoff: a fixed supply. Run through it, and you’re waiting for a refill.
Tankless
Heats water on demand as it flows through the unit, so there’s no storage limit and a much smaller footprint. Costs more upfront—especially if switching from tank to tankless means new venting or a larger gas line—but typically lasts 15–20 years against a tank’s 8–12. Our breakdown of tankless water heater pros and cons goes deeper on how it works.
Heat Pump (Hybrid)
Pulls ambient heat from the surrounding air and transfers it into the water, similar to how a refrigerator works in reverse. The most energy-efficient option, and currently the type most likely to qualify for a local utility rebate (more below). It needs a location with enough ambient air—a garage or unfinished basement—to run efficiently.
Fuel Type and Sizing
Gas units cost less to run and recover hot water faster. Electric units cost less to install since they skip gas lines and venting. And sizing matters regardless of type: a 50-gallon tank comfortably covers a household of 3–4, but larger households or homes with simultaneous demand (a shower running while the dishwasher’s going) may need to size up—or consider a tankless system with no capacity limit at all.
Want to talk through specifics? Our tankless water heater installation page covers what a switch involves, and our heat pump water heater page covers sizing and placement for hybrid units.
What Replacement Actually Costs in 2026—and What’s Still Covered
| Unit type | Typical installed cost | Typical lifespan |
| Standard tank (gas or electric) | $900 – $3,100 | 8–12 years |
| Tankless (gas or electric) | $1,400 – $5,600 | 15–20 years |
| Heat pump / hybrid electric | $2,500 – $4,500 before rebates | 10–15 years |
Beyond the unit itself, the biggest cost variables are gas line or electrical upgrades, new venting, permit fees, and whether code requires an expansion tank. A proper assessment catches these before work starts, not after.
The Federal Tax Credit is Gone
A lot of older articles still get this wrong: the federal Section 25C tax credit—up to $2,000 for a qualifying heat pump water heater—expired for any unit placed in service after December 31, 2025. If you installed a qualifying unit in 2023–2025 and haven’t claimed it, you can still file retroactively with IRS Form 5695. Installing in 2026 no longer qualifies, period.
What’s Still Available Locally
Tacoma Power’s Electric Hybrid Water Heater rebate offers $500 for replacing a standard electric water heater with a qualifying heat pump model. Income-qualified households can receive a $2,500 rebate plus a $2,500 deferred, interest-free loan. Tacoma Power estimates the switch saves about $350 a year in energy costs—roughly $3,500 over a typical unit’s life.
What Installation Actually Includes
A professional installation starts with sizing the replacement to your household, then pulling the required permit, and removing and disposing of the old unit. Then your technician installs the new one with any needed venting or electrical work, and finishes with testing and a code compliance check.
Schedule Water Heater Replacement Today!
A water heater on its way out doesn’t wait for a slow week on your calendar. It fails during a holiday, a house full of guests, or the coldest stretch of the year—and an emergency replacement means less time to compare options and a smaller window to catch rebate eligibility before the job’s done.
If your unit is showing any of the signs above, or you’re simply past the 10-year mark, schedule a free water heater replacement estimate with Bob Larson Plumbing. Ask about current Tacoma Power rebate eligibility when you book—it’s worth confirming before, not after, your installation date.
