Electric hot water systems can vary in terms of energy-efficiency, and their efficiency depends on the type of system you have. Here are some common types of electric hot water systems and how they fair in terms of energy-efficiency:
- Storage tank water heaters: Traditional electric storage tank water heaters can be less energy-efficient because they continuously heat water to maintain a set temperature, even when hot water is not in use. Energy losses can occur through the walls of the tank.
- Continuous flow water heaters: Tankless electric water heaters are generally considered more energy-efficient. They only heat water when there’s a demand, avoiding standby energy losses associated with storage tanks. However, the efficiency can be influenced by factors such as the unit’s size, the temperature rise required, and the electrical capacity of your home.
- Heat pump water heaters: These systems are more energy-efficient than traditional electric water heaters. They transfer heat from the air or ground to heat the water, using less electricity. However, they may not be suitable for all households.