Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Plumbing
Hot Water Recirculation Calculator
Estimate the heat loss in a hot water recirculation system based on pipe length, diameter, insulation quality, and acceptable temperature drop. Use this when designing or auditing a recirculation loop to minimize wait time and energy waste.
Fill in the required fields to see your result.
Plumbing
Water Pressure Drop Calculator
Calculates the residual water pressure (PSI) at the end of a piping run after accounting for elevation changes, pipe friction loss, and fittings. Use it to verify adequate pressure reaches the most remote fixture.
Fill in the required fields to see your result.
Key differences
| Hot Water Recirculation Calculator | Water Pressure Drop Calculator | |
|---|---|---|
| Category | Plumbing | Plumbing |
| Inputs required | 4 | 5 |
| Result | Required Flow Rate (GPM) | Available Pressure (PSI) |
| What it does | Estimate the heat loss in a hot water recirculation system based on pipe length, diameter, insulation quality, and acceptable temperature drop. Use this when designing or auditing a recirculation loop to minimize wait time and energy waste. | Calculates the residual water pressure (PSI) at the end of a piping run after accounting for elevation changes, pipe friction loss, and fittings. Use it to verify adequate pressure reaches the most remote fixture. |