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.


Reliability assured

Lightweight and compact design

Lightweight and compact design

  • 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

  • HRU Eco 4
HRU Eco 4

View product specification

When clicked this will open the product specification in PDF format.

Product Height  Width Depth  Weight Order code
mm mm mm kg
HRU ECO 4 House 848 730 477 25 95:060:002
HRU ECO 4 Apartment 848 730 477 25 95:060:003


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


There are currently no BIM files for this product

Approved and accredited
Related information
how to buy
How to buy
At Heatrae Sadia we understand that you should never put a price on comfort. Our products are designed with the highest quality of materials and we lead the market with our engineering expertise. Whilst we don't sell our products direct to the trade, we are the only leading manufacturer to have our entire product range stocked by all the leading merchants.
How to buy this product
customer support
Customer support
If you want more information on how to order; book a service or repair for your product; register your warranty; or to call our UK based helpline, you've come to the right place. Just give us a call and see how our award-winning Customer Support team can help you.
Get help for your product
literature library
Literature library
Our Literature library contains all the Heatrae Sadia and Megaflo Literature brochures, installation guides and user guides, available to view and download from one easy to use, centralised location including an archive for discontinued products.
Download literature

Related products
Our factory compliance standards

Engineered in Britain.

Trusted worldwide.