Patch or Pitch
Costs checked Oct 26, 2026
The numbers
Repair average (tank)US$150 - 700
Repair average (tankless)US$300 - 1,300
Replace installed (tank)US$600 - 3,100
Replace installed (tankless)US$1,400 - 5,600
Typical lifespan (tank)6 - 12 years
HomeGuide, 2026, US dollars. InterNACHI life expectancy chart.
When people lean repair
- The unit is under 8 years old and the tank itself is not leaking.
- The fix is a part: anode rod, dip tube, element, thermostat or a flush.
- The quote is well under half the cost of a new installed unit.
When people lean replace
- The tank leaks. A leaking tank is not repairable; it means the glass lining has failed.
- It is past 10 years and needs anything beyond a minor part.
- Rusty water or rumbling sediment plus a larger quote on an older tank.
What breaks and what it costs
Anode rod replacementUS$150 - 350
Flush and clean tankUS$75 - 250
Dip tube replacementUS$100 - 300
Expansion tank replacementUS$300 - 800
Circulator pump replacementUS$150 - 680
HomeGuide water heater repair cost data, 2026, US dollars.
Warranty angle
Home warranty contracts can limit coverage and cap what they reimburse for a system. Check the contract before counting on coverage.
Costs: HomeGuide installer-reported data, 2026. Lifespans: InterNACHI home life expectancy chart. All prices in US dollars.