Water and energy
How fast does RinWaJet pay for itself?
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United KingdomRinWaJet pays for itself after only 14 hours of use!
Households in Iceland don't pay for water per m³, so the saving comes from heating the water.
Recommended retail price in Iceland: 9.439 ISK 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 Iceland
| Water + wastewater | 0,668 m³ × 0,00 ISK/m³ | 0,00 ISK |
| Heating (warm water) | 23,3 kWh × 29,98 ISK/kWh | 698,48 ISK |
| Total, warm water | 698,48 ISK |
Payback
9.439 ISK ÷ 698,48 ISK per hour = about 14 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: Veitur price list 1 July 2026: households pay by floor area, not per m³
- Electricity: Eurostat, household electricity 2026-S1 (nrg_pc_204)
Use your own prices
Leave a field empty to use the national average.