Instant water heater Mi 3, compact, hydraulically controlled 3.5 kW / 230 V, under-sink 1500-16033

Tankless water heater that turns on automatically when you open the tap

The device operates only when water is flowing – no energy waste when the sink is not in use. As soon as flow exceeds 1.3 l/min, the 3.5 kW heating element activates automatically, heating water to 55°C, with a performance of 2.0 l/min at a temperature difference of 25 K. This is sufficient for one sink – no need to wait for a tank to heat up, no heat losses.

The IES® heating system with an exposed noble steel heating element ensures longer service life and easy maintenance. The heating cartridge can be replaced without dismantling the entire unit – significantly reducing maintenance costs. There is no issue with limescale deposits: the design minimizes their accumulation.

Pressurized construction – compatible with any faucet

No need to choose between pressurized or non-pressurized faucets – the device works with both types. Brass connections ensure a tight and durable seal. The water flow regulator (included) is mounted directly into the M22/24 faucet sleeve – providing the sensation of abundant flow even at low water pressure.

Installation is simple: the push-in wall bracket allows the heater to be concealed under the sink without screw mounting. The power cord with Euro plug (length 65 cm) and 1.5 mm² cable cross-section are included – simply connect to a 15A circuit breaker.

Safe, compact, and ready to use

Dimensions 13.5 × 18.6 × 8.7 cm enable discreet installation even in tight spaces. Maximum working pressure up to 10 bar – resistant to network pressure fluctuations. The pressure safety device reacts instantly to installation faults – e.g., blocked flow or overload.

Weight 1.5 kg – lightweight yet robust. 2-year warranty. Spare parts available for at least 5 years after the last purchase of the unit.

No central control unit, app, or batteries required. No electronics beyond the hydraulic mechanism – meaning fewer potential failures.