Stiebel Eltron Mini™ 3-1 120 Volt (110 V)
Point-of-UseTankless Water Heater

Stiebel Eltron Mini 3-1-1

Our Price: US$159.00


(In Stock)


The Stiebel Eltron Mini™ Series tankless water heaters are economical, ultra-compact, attractive point-of-use tankless water heaters designed for basic low-flow point of use applications. The Mini Series is best suited to applications with a relatively constant flow rate. If the flow rate is likely to fluctuate in your application due to varying water demands or changes in well pump pressures, etc., we recommend that you consider a DHC-E 8 tankless water heater with thermostatic control and flow-based power modulation technology.

Due to its small size, the Stiebel Eltron Mini 3-1 conveniently fits directly under the sink or adjacent cupboard or closet, so it delivers hot water to the sink almost instantly. By locating the heater right near the point-of-use, you can also eliminate thermal heat loss commonly associated with long pipe runs. If the Mini 3-1 can supply all of the hot water needs for the room, in new construction applications, you also eliminate the need to run a hot water line all the way from the main central water heater which can save you significant money in plumbing and material cost.

By producing hot water on demand only as it is being used, the Mini 3-1 is extremely energy efficient. A sophisticated water flow sensor recognizes when hot water is being used and when it has been turned off, so the unit will activate and deactivate automatically so it only runs when you are actually using water. This eliminates standby thermal heat losses associated with traditional tank type water heaters. Accordingly, you can expect to see a significant cost reduction over the operating cost of a conventional water heater.

Maximum Flow Rate in Gallons Per
Minute at 105F Output Temperature
  Incoming Water Temp:     Flow Rate (GPM)  
40F not recommended
45F not recommended
50F not recommended
55F not recommended
60F not recommended
65F not recommended
70F 0.58 GPM
75F 0.68 GPM
80F 0.82 GPM
* This chart is based on 120v power input.
Internal View Stiebel Eltron Mini 2 Tankless Water Heater

All Mini Series tankless water heaters are equipped with a safety high-limit with manual reset.

The Stiebel Eltron Mini 3-1 is not recommended for whole house use. For more information on whole house models, see our Stiebel Eltron Tempra Series Whole House Tankless Water Heaters.

Stiebel Eltron Mini 3-1 Tankless Water Heater Specifications

KW 3.0 KW @ 120V
Voltage: 110 to 120 volts / single phase / 50 - 60 Hz
Max. Amps: 25 AMPS
Breakers Required:*  1 x 25 AMP breaker
Wiring:*  Minimum #10 AWG Copper
Minimum Water Resistivity 2795 ohm x in / 1100 ohm x cm
Degree of protection according to IEC 529 IP 24
Dimensions (H x D X W): 6.5 x 3.25 x 7.5" (16.5 x 8.2 x 19 cm)
Weight: 3.4 lbs (1.6 KG)
Pipe Fittings:  for 3/8" O.D. flex connector
Energy Efficiency: 99%+
Activation Flow Rate: 0.40 GPM / 1.5 LPM
Max. Water Pressure:    150 psi
Warranty: Manufacturer's 3 Year Warranty
Safety: ETL Listed (US / Canada)
Protection: thermal hi-limit cut-out switch

* Breaker size and wire gauge must meet all applicable local, state, provincial, and national electrical codes for your area - these are only guidelines that will apply to most installations. Please consult your electrician for more details.