Plumbing March 29, 2026 6 min read
Water Heater Repair vs. Replacement: How to Decide
Your water heater works silently in the background until it doesn't. When problems arise, the biggest question is whether to repair or replace.
The age factor
Tank water heaters last 8-12 years. Tankless models last 15-20 years. If yours is past the halfway point of its lifespan and needs a repair costing more than 50% of replacement, replace it.
Signs you need replacement
- Rusty water from hot tap only
- Puddle forming around the base
- Age over 10 years with frequent repairs
- Inconsistent water temperature
- Rising energy bills with same usage
- Rumbling or banging noises
When repair makes sense
If your water heater is under 6 years old and the repair is a thermostat, heating element, or pressure valve replacement, repair is almost always the right call. These parts cost $150-$400.
Replacement costs in 2026
A 50-gallon tank water heater installed costs $1,200-$2,500. Tankless units run $2,500-$4,500 installed but save 20-30% on energy costs annually.
