# Free tools

Free tools for plumbing businesses listed in public registers and member directories. You need no account.

- [Water heater sizing estimator](https://plumberpros.fyi/tools/water-heater-sizing.md): Estimate peak hot water demand before discussing a tank replacement with a plumber.
- [Plumbing permit checker](https://plumberpros.fyi/tools/plumbing-permit-checker.md): Check published permit guidance for selected jurisdictions and find the issuing office.