A fresh approach...

The HRU ECO 4 ensures year-round comfort and low energy bills to occupants of the modern airtight home. While removing contaminated wet air from kitchens, utility rooms and bathrooms, the unit simultaneously introduces fresh preheated air to other rooms in the home.

The HRU ECO 4 diverts up to 91% of heat from the air leaving the building into the incoming supply. A 100% summer bypass valve prevents unwanted heat entering the home on hotter days, while, at the other end of the temperature gauge, a frost protection device prevents the unit from freezing. Suitable for homes with up to 175 square metres of floor space, the HRU ECO 4 uses less energy than intermittent fans.

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Eco 4

  • Ideal for properties of up to 175m2 habitable floor area
  • Specific fan power of less than 0.5 W/l/s
  • 91% heat exchanger efficiency
  • Built-in 100% summer bypass
  • Built-in frost protection device
  • Only 25kg lift weight
  • Available in both house and apartment configurations
  • Hard wired or remote wireless control available to work with units
  • Supplied with an external LED indicator to show when the filter requires changing


Product Height  Width Depth  Weight Order code

mm mm mm kg
HRU ECO 4 House 848 730 477 25 7030001
HRU ECO 4 Apartment 848 730 477 25 7030000



Order Code

Duct Connection Kit


Wired controller


RF controller (white)


RF controller with LED


HRU ECO 4 G4 filters (pair)


HRU ECO 4 F7 filters (pair)


Advance & Advance Plus G4 filters (pair)


Advance & Advance Plus F7 filters (pair)


RF Status Indicator Panel / Controller


CO² Sensor


PIR Sensor


RH Sensor


Automatic Controller




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