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Tankless Cost Savings Calculator

Quick answer: Annual savings ≈ tank yearly energy cost × the efficiency gain from no standby loss. With example assumptions, a gas household spending $400/yr on water heating might save roughly $40–$120/yr — an estimate, not a guarantee.

Estimate, not a guarantee. Results are based on assumptions you enter or on labelled examples; energy and equipment prices change. Any example figures are examples only, dated 2026-10-29.

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Estimates for planning only — not professional, engineering, plumbing, gas or electrical advice. Confirm sizing, venting, gas and electrical with a licensed installer and local code.

Labelled assumptions

Figures below are illustrative examples (2026-10-29), not quotes or guarantees.

Your current yearly water-heating energy cost (from bills).
Assumed savings % (often cited 10–30% depending on usage; lower for heavy users).
Extra install cost, to estimate a simple payback period.

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