How Much Does Tankless Water Heater Installation Cost?
Why Tankless Costs More Upfront
Tankless installation typically costs more than a like-for-like tank replacement because gas units often require larger-diameter gas lines and updated venting, while electric units may need a dedicated, higher-amperage circuit.
Converting from an existing tank system to tankless adds the cost of removing the old tank in addition to the new unit and any infrastructure upgrades.
Long-Term Value Considerations
While the installation itself costs more, tankless units typically last significantly longer than tank units (15-20+ years vs. 8-12) and can reduce monthly energy costs, especially in high-hot-water-demand households.
A specialist can help you calculate a realistic payback timeline based on your home’s specific hot water usage.
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Frequently Asked Questions
Does going tankless always require a gas line upgrade?
Not always — it depends on your existing gas line size and the new unit’s BTU rating. A specialist can assess your specific setup before quoting.
Are electric tankless units cheaper to install than gas tankless units?
It depends on your home’s electrical capacity — if a dedicated circuit upgrade is needed, electrical work can offset any savings versus a gas unit.
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