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A fully titanium heater by Elecro, the Evolution 2, is the latest and upgraded version of the original Evolution. Boasting 100% efficiency, safety, and above all, reliability, this compact and robust unit will effortlessly heat your pool or spa to your desired temperature.


  • Ten power options ranging from 1-kW to 24-kW
  • Easy installation, fully equipped and pre-wired
  • Robust, durable construction
  • Ultra-reliable flow switch allows safe operation
  • Temperature thermostat and overheating sensor
  • Compact, durable design
  • Analogue control with 1.2˚C differential or digital control with 0.5˚C differential and selectable multi-lingual display
  • Titanium flow tube and titanium heating element
  • Can be floor or vertically wall mounted
  • Vortex, long life, stay clean heating element technology
  • 100% efficiency throughout the product life
  • Silent operation


Power Supply Single phase or three phase
Flow Requirements Minimum flow: 1-kW to 6-kW, 1m³/h
Minimum flow: 9-kW to 24-kW, 4m³/h
Maximum flow: 17m³/h
Heating Elements Grade 1 titanium
Flow Tube Grade 1 titanium
Control Thermostat Analogoue: 0>45°C (1.2°C differential)
Digital: 0 > 45°C (0.5°C differential)
Safety Thermal Cut Out 60°C (manual reset)
Flow Switch Gold tipped reed switch with titanium fulcrum pin
Contactor Siemens 3RT2023 OR 3RT2027
Seals High temperature special formula EPDM ferrules, TPE end fitting gaskets
Water Connection 1.5” BSP female thread supplied with 1½” / 50mm stepped ABS unions for rigid pipe and 1½” / 1¼” stepped hose tails for flexible pipe
Ingress Protection Rating IP44
Frequency 50/60 Hz
Working Pressure 4 bar maximum
Mounting Floor or wall mounting
SKU: HE8025 Categories: , ,
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