Smart Home Energy 
If you want to gently nudge your household into shorter showers without lecturing or fitting anything permanent, a £7.59 sand timer stuck to the wall might save you £50–£100/year per person — or at least start the conversation.
Problem it solves
Reduces hot water heating costs by encouraging shorter showers through a visible 4-minute countdown timer.
Who it's for
Families with high shower usage, anyone trying to cut hot water bills, parents wanting to teach kids water-saving habits, or renters looking for a zero-install energy saving measure.
Why we recommend
Can help to nudge kids along and if it works more than once it will have paid for itself!
Savings
- Typical annual saving
- £50–£110 per person depending on current shower length and whether using a power shower — manufacturer claims £214/year based on 8-minute to 4-minute reduction with power shower
- Payback period
- Quick!
