Hot Water Recirculation Calculator vs Water Pressure & Flow Calculator
Two calculators for the same neighbourhood of questions. Here is what each measures, what you feed in, and where you'd reach for one over the other.
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.
- Answers
- Required Flow Rate (GPM)
- Inputs
- Total Piping Length, Return Line Diameter, Acceptable Temperature Drop, Pipe Insulation
Water Pressure & Flow Calculator
Estimate the flow rate (GPH) available at your fixtures given pipe size, supply pressure, elevation change, and pipe length. Use this when sizing a plumbing system or diagnosing low-pressure complaints.
- Answers
- Flow Rate per Fixture (GPM)
- Inputs
- Pipe Diameter, Water Pressure, Total Pipe Length, Elevation Change, Number of Fixtures
At a glance
| Hot Water Recirculation Calculator | Water Pressure & Flow Calculator | |
|---|---|---|
| Category | Plumbing | Water Usage |
| Answers | Required Flow Rate | Flow Rate per Fixture |
| Inputs | 4 | 5 |
| Result unit | GPM | GPM |
When to use each
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.
Estimate the flow rate (GPH) available at your fixtures given pipe size, supply pressure, elevation change, and pipe length. Use this when sizing a plumbing system or diagnosing low-pressure complaints.