Stiebel Eltron Accelera 300E 80G Heat Pump Water Heater

Stiebel Eltron Accelera 300E 80G Heat Pump Water Heater
Stiebel Eltron Accelera 300E 80G Heat Pump Water Heater
Up to 80% more efficient than a regular water heater! Plus FREE SHIPPING in Cont US!
$2,575.00 List price $3,199.00

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Item code Brand name Model number
STIACCELERA300E Stiebel Eltron Accelera-300E
FREE SHIPPING within lower 48 states! *Plus check state and federal rebates - payback can be as little as 2 years!

Stiebel Eltron
Accelera 300E - 80 Gallon
Heat Pump Water Heater

Newest in the Accelera family, the Accelera 300E, boasts increased efficiency, with an even higher Energy Star rating! A heat pump water heater is not a new concept. The Accelera®300E works like an air conditioner but instead of dumping the heat outdoors, it puts it into the water. The appliance extracts heat from the ambient air and recirculates it - it does not require outdoor air. The Accelera’s compressor and fan consume only 1kWh of electricity to generate the heat equivalent of 3 – 5kWh. The efficiency of the unit goes up with increasing ambient air temperatures. This groundbreaking efficiency redefines what a water heater is capable of. Plus, payback can be as little as 2 years! Check your local, state, and federal Incentives here.


  • 80 gallon storage capacity
  • Reduces hot water costs by up to 80% by extracting energy from the ambient air around the unit - place it in the warmest spot you can
  • Cools and dehumidifies the air around it
  • Selection of high-efficiency or high-demand operating modes
  • LCD displays energy content in the tank, setpoints, current temperature, aids in troubleshooting and can display in either SI or US units
  • Boost function can provide extra hot water for 48 hours at the press of a button
  • In Automatic Mode, the 1500W backup heating element automatically activates after 2/3rds of the total heated water has been consumed
  • Top 10 rated Energy Star heat pump water heater with energy factor (EF) of 3.39
  • Only wrap-around aluminum condenser on the market - means no possible contamination of potable water
  • Reliable German technology and manufacturing backed by a 10-year warranty
  • Impressed current anode never needs replacing
  • CSA/ETL Listed
  • Thicker insulation (3” vs. 2” in the original 300 tank) resulting in less standby loss and increased energy/cost savings
  • Quieter – heat pump circuit was moved outside the line of airflow, reducing the noise output by half
  • Smart Grid functionality – allows connection to select PV inverters or timers when energy costs are advantageous

      Accelera 220E Accelera 300E
    Tank Capacity 58 gallon (220 litre) 80 gallon (302 litre)
    Energy Star Rating 3.05 3.39
    DOE Est Annual Energy Usage 1040 kWh/yr 1289 kWh/yr
    First Hour Rating 50.3 gallon 74.2 gallon
    Max DHW temperature 149°F/65°C
    Voltage/Frequency (Single Phase) 220-240V/ 60Hz
    Required Circuit Breaker 15A
    Rated Power, Compressor and Fan 650W
    Rated Power, Booster Element 1500W
    Operating Temperature Range 42-108°F/ 6-42°C
    Condensate Connection 3/4" Male NPT to 1/2" Barbed Elbow
    Water Connections 1" Male NPT
    Safety Condenser Wraps around outside
    Weight (Empty/Full) 265 lbs/ 749 lbs 298 lbs/ 957 lbs
    Dimensions 61" H/ 27.25" Diameter 75.25" H/ 27.25" Diameter


  • The heat pump system contains a fan that forces air through an evaporator (1). The evaporator contains a liquid refrigerant. When this refrigerant evaporates, it extracts heat from the ambient air.
  • The now warm gaseous refrigerant passes through the compressor (2) which increases its pressure. As the pressure increases, the temperature of the refrigerant rises. The refrigerant turns back into a liquid which is now hot.
  • The hot refrigerant then passes through the condenser (3), which is wrapped around the water tank, transferring its heat to the water.
  • The refrigerant which is now cool then passes through an expansion valve (4), where it goes back into a gaseous state and the process begins anew.

    See more technical information in the Product Documentation section above!

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