Electric shower systems are available in a choice of wattages or contrasting power outputs.
In the main, the wattage of electric showers will begin at 7.5 kilowatts (kW), with the most powerful models typically capped at around 10.5kW.
The more powerful electric showers are considered the best options in a broad sense, but it should be noted that the components offering a higher wattage will usually prove more expensive.