Water heating
Tank vs tankless water heater
Tradeoffs for hot-water upgrades — space, simultaneous use, venting, and installation complexity.
Published 2026-10-23 · Last reviewed 2026-10-23
Tank systems
Storage tanks are familiar, often straightforward to replace like-for-like, and handle simultaneous uses based on tank size and recovery rate.
Tankless systems
Tankless units heat on demand and can save floor space. They need correct sizing for peak flow, proper venting or electrical capacity, and sometimes water treatment considerations.
Neither option is universally “best.” Household patterns decide the better fit.
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