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Stiebel Eltron MINI4 Mini 4 Mini Tankless Electric Water Heater


The Stiebel Eltron Mini™ tankless water heaters are designed for installation at the point-of-use. The Mini™ heats water instantaneously as it flows through the unit. Stand-by heat-losses are completely eliminated. The efficient heating elements are controlled by a simple flow switch. Additionally, all Mini™ water heaters are equipped with a safety high-limit with manual reset.

The combination of meticulous German engineering and the best available materials ensure that every Mini™ is of the highest quality and designed for many years of trouble-free service. Nobody can compare with our exceptional reliability record and customer support services!

The Mini 4 models ship with a 0.5 GPM pressure compensating flow reducer / aerator that fits most faucets. Flow controls and faucet aerators are highly recommended in conjunction with tankless water heaters. No pressure relief valve*, drains, or circulating pumps are needed.


The Stiebel Eltron Mini™ tankless water heaters are ideal for restrooms or kitchenettes in an office or commercial / industrial setting:

  • Office Buildings
  • Gas Stations
  • Stores
  • Schools
  • Malls
  • Hotels / Motels
  • Warehouses
  • Commercial Condominiums
  • Restaurants
  • Manufacturing Facilities

In a residential setting, they are suited for the following applications:

  • Bathroom Sinks
  • Kitchen Sinks
  • Laundry Areas
  • Small Cabins
  • Boats / RVs


  • Extremely compact design save space
  • Major energy savings
  • Unlimited supply of hot water
  • Proven reliability
  • Sleek design is appealing and can be mounted in plain sight
  • Only 7.5" x 6.5"!
  • Hardwired 220-240
  • Phase 1
  • Voltage: 208v, 220-240v
  • Wattage: 2.9/3.5 kW
  • Amperage Draw: 13.8/15.2 A
  • Min. required circuit breaker size1: 20A
  • Recommended wire size2: 12AWG
  • Minimum water flow to activate unit: 0.40 GPM / 1.5 l/min
  • Degree of protection according to IEC 529 : IP 24
  • Weight: 3.44 lbs / 1.56 kg
  • Dimensions (Height/Width/Depth): 6.5" (16.5cm) / 7.5" (19.0cm) / 3.25" (8.2cm)
  • Working Pressure: 150 psi / 10 bar
  • Tested to Pressure: 300 psi / 20 bar
  • Volume of water in unit: 0.026 gal. / 0.1 l
  • Water connections3: for 3/8" O.D. flexible braided stainless steel hose connectors

Warranty Information

7 years against leakage
3 year against defects in workmanship & materials.
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