How much does a tankless water heater cost?
Tankless water heater installation runs $1,800 for a basic gas point-of-use unit, $3,500 for a typical whole-house condensing tankless install, and $6,500+ for high-flow models requiring gas-line upsizing or 240V electrical.
Quick price points (2026)
| Tier | Cost | Unit |
|---|---|---|
| Low | $1,800 | installed |
| Typical | $3,500 | installed |
| High | $6,500 | installed |