The pressurizer power consumption is very small. It answers for less than 2% of the power consumption of an electric shower.
Pressurizers
Ask your most frequently asked questions
Does the Maxi Turbo Pressurize increase my power consumption?
Is it possible to turn off the Maxi Turbo Pressurizer?
The Maxi Turbo Pressurizer doesn’t have an on/off switch. In order to reduce the shower water flow just use the cock.