Ecoforest ecoAIR EVI Basic 4-20kW

High performance, air to water heat pump with stepless modulation and an output of 4 – 20kW. Works with any size DHW cylinder, ideal for those who want a large cylinder. EVI technology for especially good performance with radiators.


An air to water heat pump for larger or less well insulated homes and incorporating superior technology (Ecoforest, patented software) to optimise performance and minimise the cost of heating. This heat pump offers stepless modulation from 4 – 20kW.

The ecoAIR EVI range of heat pumps offer the unique EVI technology to extract further heat from the fluid returning to the heat pump. This is added back into the heat pump process and is what enables an Ecoforest heat pump to reach the extraordinary temperatures that it can. That permits heat pump operation without the requirement (or recommendation) of buffer tanks and means that direct heating to radiators is feasible and efficient. The “Basic” range allows installation with a wide range of DHW cylinders and can even be used with existing cylinders in certain circumstances, giving great flexibility of design to the installer and customer alike.

Technical Data

  • Built to customer specification, for optimal performance
  • Inverter technology & scroll compressor
  • Full modulation of all components from 20 – 100%
  • EVI technology for top performance in unfavourable conditions
  • Unique system with flash tank
  • Heating, cooling, DHW
  • Select any size of DHW cylinder or connect to existing
  • Integrated active cooling
  • Hybridisation with Solar PV (through ecoSMART e-Manager or e-System)
  • Advanced remote access for diagnostics and monitoring (optional)
  • Single and three phase options
  • Exceptionally easy to install
  • Commissioned by Eco Heat
  • Monobloc dimensions: Height 1,250mm, Length 1,240mm, Depth 625mm
  • Monobloc weight 177kg
  • Internal control module dimensions (CM): Height 600mm, Width 400mm, Depth 158mm
  • Control module weight 15kg

Additional information



COP A7/W35


DHW max. temp. without electrical support


Electric heater required for DHW


EVI technology


HTR technology


Energy label rating - 35°C


Energy Label Rating - 55°C


Max noise level

63 dB*

Wi-Fi compatible


Cooling function


Refrigerant type


DHW volume