Disclaimer

Last updated: 2026-09-19

Everything on TanklessCalc is an estimate produced from the values you enter. It is offered in good faith, using published constants and standard formulas, and it is still only arithmetic.

Not professional advice

Sizing results are planning estimates from published fixture flow rates and physical constants, not an assessment of a specific building. A calculation cannot see your site, your materials, your equipment or your circumstances. Where a decision carries a cost or a risk, take advice from someone qualified who can look at the actual situation.

Verify before you rely on it

• Check the result against your own measurements.
• Confirm anything regulated with the body that publishes the rule.
• Read the coverage figure on your own product rather than assuming the conventional one.
• Buy or commit in stages where a mistake would be expensive.

No liability

See the terms of use. In short: we are not liable for losses arising from reliance on an estimate, and you should not rely on one where the consequence of being wrong is serious.