Water and energy
How fast does RinWaJet pay for itself?
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United KingdomRinWaJet pays for itself after only 7,3 hours of use!
With cold water: about 22 hours.
Recommended retail price in Finland: 69 € incl. VAT.
Compared with an ordinary shower hose for the same rinse time, with warm water heated from 8 °C to 38 °C by an electric water heater. Hours are total time with the water running.
After that, the saving keeps going. RinWaJet is made of SS304 stainless steel, with no moving parts and no O-rings, and is built to last.
See the calculation
Measured water use
10-litre bucket test: ordinary shower hose 37 seconds (16,2 L/min), RinWaJet 1 minute 58 seconds (5,1 L/min). With the water running for the same time, RinWaJet uses about 668 litres less per hour.
Saving per hour in Finland
| Water + wastewater | 0,668 m³ × 4,67 €/m³ | 3,12 € |
| Heating (warm water) | 23,3 kWh × 0,27 €/kWh | 6,28 € |
| Total, warm water | 9,40 € |
Payback
69 € ÷ 9,40 € per hour = about 7,3 hours. The whole purchase price is earned back. The price is 69 € converted at today's ECB exchange rate.
Prices
National averages incl. VAT and taxes, as households pay them. Fixed annual charges are left out, since they do not fall when you use less. Checked November 2026.
- Water + wastewater: HSY water services price list 2026 (Helsinki region)
- Electricity: Eurostat, household electricity 2026-S1 (nrg_pc_204)
Use your own prices
Leave a field empty to use the national average.