Looking for ways to save hot water and cut energy costs? With rising electricity prices, reducing hot water consumption is a smart strategy to lower electricity usage, especially if you have a hot water tank.
These practical steps are straightforward and effective. Here are 6 expert tips for saving domestic hot water and reducing your bills:


Many people leave mixer taps in the middle position, drawing lukewarm water for tasks like washing dishes, rinsing glasses, vegetables, or hands.
As energy experts note, most of these tasks can be done effectively with cold water. Always return the mixer to the cold water position to avoid unnecessary hot water use.

Aerators—small devices screwed onto faucets—are highly effective for water savings. According to ADEME (the French Ecological Transition Agency), they can reduce water use by up to 75%.
These filters limit flow while maintaining pressure, allowing you to wash and rinse efficiently with less water.

While hot showers are enjoyable, you can lower your water heater temperature to 55°C or a maximum of 60°C without sacrificing comfort.
ADEME confirms this range eliminates bacteria while significantly cutting electricity consumption year-round.

For absences of a few days—like vacations or business trips—turn off your electric water heater. There's no need to heat water when no one's home, delivering real energy savings effortlessly.

Professionals recommend insulating pipes with materials like glass wool (known as pipe lagging or calorifugeage). This prevents heat loss, especially on longer runs from the tank to taps.

Apply the same principle to your water heater, particularly if it's in a cold area like a garage, basement, or cellar. Insulating the electric water heater saves at least 5 kWh per day. Learn how here.