Instant water heater

Start by determining the required electrical power and the expected water flow for your daily use. Options in this range include units with 9, 11, 13.5, 21, and 24 kW. Some models feature a touch screen, and warranty coverage varies—typically two or five years depending on the model. Look for a unit that provides enough flow for your water pressure, and avoid low-power options if you have a larger household or high water usage in the evening.

Electrical power and water flow are the most important factors because they determine whether the system can truly meet your needs. With power up to 24 kW, the flow depends on your water pressure. For example, a 24 kW model may deliver around 6–8 liters per minute depending on pressure, while lower-power options work better for lighter needs in a small residential unit. So balancing how much hot water you need with what your energy setup can handle is the key to choosing the right one.

Higher-power options like 24 kW are suitable for homes with high hot-water demand or quick peak-time usage, while 11–13.5 kW may be enough for a small apartment or a small family where not everyone needs hot water at the exact same moment. If you plan to use more than one hot-water tap at the same time, choose a higher power to ensure quick response. Having models with different power ratings helps you match the heater to your actual needs and your installation space.

Make sure it comes with an appropriate warranty and proper maintenance guidance. Some models include a five-year warranty, while others offer two years. There may also be specific warnings for models with a digital screen or safety alerts. Keep electrical connections in good condition, and it’s best to have a qualified electrician install the unit for safety. Monitor related systems like water lines and pressure, and follow regular washing/cleaning instructions—this extends the heater’s lifespan and reduces the risk of malfunctions.

Yes. Some models come with a touch screen that clearly shows power and temperature, making it easier to adjust precisely. Some units also offer long warranties up to five years and provide multiple safety settings. When comparing options, check whether the heater has an easy-to-use control interface, the warranty policy, and the heating capacity and flow rate based on your water pressure.

For a modern apartment, a medium power such as 11–13.5 kW is recommended. It lets you use one instant water heater with a reasonable hot-water flow without excessive energy consumption. Choose a model that includes a temperature control screen for accurate settings and comes with a reliable warranty. If your needs are more demanding—such as running multiple taps at once—then one of the higher-power models is the best choice for comfort without delays.