Our electric shower (in common with all the others I can remember) has three settings - cold, half heat, full heat.
I use the cold to cool the shower down before turning off. I use the full heat to shower. Unless I wanted a tepid shower at a slow flow rate, why would I need the half heat?
Half power, minimum flow, cheapskate shower using less water and power?
Does anyone use this half heat option?
Cheers
Dave R