Choose inputs you can explain
Use a flow rate supported by an appropriate measurement or product information with its conditions recorded. A catalogue maximum is not necessarily the flow you use at home. Record whether a number is measured, quoted or only a scenario.
Enter minutes of water running per shower, then the total number of showers per week. For example, two people each showering once a day gives 14 showers, not two. The calculator deliberately uses the same weekly count for both routines so you can compare changes in flow and duration.
Follow the arithmetic with a worked example
For an illustrative current routine of 12 litres/minute for 8 minutes, one shower uses 96 litres. At 14 showers a week that is 1,344 litres. A proposed routine of 8 litres/minute for 5 minutes uses 40 litres each, or 560 litres weekly.
The difference is 784 litres a week. Repeating those assumptions for 52 weeks gives 40,768 litres less. These are example inputs, not measurements of a particular product, household or Elegant Haven installation.
| Result | Calculation |
|---|---|
| Litres per shower | Litres/minute × minutes |
| Litres per week | Litres per shower × weekly shower count |
| Weekly difference | Current weekly use − proposed weekly use |
| Annualised difference | Weekly difference × 52 |
| Negative difference | The proposed routine uses more water under the entered assumptions |
Understand what the estimate leaves out
The result excludes warm-up water, baths, taps and other household consumption. It does not estimate energy use, sewerage charges or bills. Actual use can vary with supply conditions, controls, routine and the people using the room.
Energy Saving Trust identifies shorter showers and suitable water-efficient fittings as ways to reduce use. Any proposed showerhead or flow restriction still needs to be compatible with the equipment, particularly electric showers. The tool does not assess compatibility, comfort or drainage capacity.
Turn the comparison into appointment questions
Copy or download the result and add the source of each input. Ask which compatible shower options could support your preferred routine and whether a suitable display is available to try. Keep an optimistic scenario separate from confirmed performance.
Take the comparison to the showroom appointment, alongside the head-choice worksheet. The calculator works in your browser without sending its entries as a booking or customer enquiry. Reset clears its inputs and result.
The pictured Ethos Single Mode Shower Head Chrome illustrates a handset format. No flow rate for that product has been assumed in the calculator.
YOUR PLANNING TOOL
Compare two shower routines.
Enter the combined number of showers your household takes in a week. That same count is used for both routines. Leave unknowns blank until you have a value; no water saving is assumed.
Calculator limits: flow 1–50 litres/minute, duration 0.1–60 minutes, and 0–200 whole showers/week. These are input limits, not recommended shower specifications. Annualised estimates use 52 identical weeks.
Complete the five fields to see your comparison.
Your entries stay in this page. They are not sent to Elegant Haven or saved after you leave. This compares running water only; it does not calculate bills, energy, pressure or drain capacity.
Discuss your shower at an appointment →Sources & further reading
Prepared with AI assistance from the linked sources and Elegant Haven’s published service information. This guide helps you prepare decisions; product suitability and installation details need confirmation for your own room. It is not a record of a completed Elegant Haven installation or an expert sign-off.