C-Mc Energy

Leading the Way to a Sustainable Future

Introduction to Heat Recovery Ventilation Units

Heat Recovery Ventilation

Having well insulated homes and buildings is vital to reduce heat loss which is a major consideration as we face serious environmental issues. However our draught free spaces have introduced a new problem – poor air quality.

The Dee Fly has the benefits of the latest motor and heat recovery technologies. The heat exchanger is designed to recover 90% of the heat extracted, whilst limiting pressure losses. The microwatt motor limits energy consumption by adjusting its speed. This is also a particularly silent HRV unit, consuming little electricity. Constructed in expanded polypropylene it is a light weight machine.

The Dee Fly is a Heat Recovery system designed for individual homes.

  • Hot air produced in bathrooms and kitchens is removed and passes through a heat exchanger before being discharged outside via a network of ducts linked to a fan unit.
  • Cold air from outside is pulled into the house, and is filtered and warmed by the heat exchanger, recovering approximately 90% of the heat from the used air being discharged, before being distributed throughout the house.
Heat Recovery Ventilation

Heat Recovery and Energy savings

The Dee Fly Heat Recovery unit limits the heat lost through the replacement of air in the house. Thanks to its counter-flow heat exchanger system it provides the optimum level of energy transfer from the 'used' air being discharged.

  • Up to 90% of the available calories from the air being extracted are used
  • Up to 20% saving in heating costs


Heat Recovery Ventilation

Dee Fly diffuses filtered, warmed air and attenuates external noises.

  • Better indoor air quality whilst maintaining comfortable temperature.
  • Eliminates draughts caused by traditional ventilation or open windows.
  • Better acoustic insulation from the outside world.

Innovative Eco Design

  • The Dee Fly casing is designed using Expanded Polypropylene (EPP) providing numerous advantages, one of which is to reduce its weight making it easier to install and results in less waste.
  • The power of the motor has been optimised to reduce energy use

Heat Recovery Ventilation Products

The Aldes Dee Fly Unit comprises of two sections: a motor unit and a heat exchanger casing.

  • Possible configurations: floor-mounting, ceiling mounting, wall-mounting, ready assembled or not.
  • The casing of the heat exchanger unit is designed to allow condensation to escape regardless of which way up it is.
Heat Recovery Ventilation

A High Performance System

  • Dee Fly has the benefits of the latest motor and heat recovery technologies.
  • The heat exchanger is sized to recover up to 90% of the available calories from the extracted air, whilst limiting pressure losses.
  • The speed of the microwatt motor can be adjusted to limit energy consumption and minimise noise.
  • The Dee Fly is a particularly silent HRV unit – the motor is placed behind the heat exchanger which acts as a sound attenuator. This is a considerable benefit when the unit is installed near bedrooms.

Simple to Use

  • Simple, user-friendly controls
  • Controller installed in the kitchen uses a standard electrical mounting box.
  • Variable speeds can be selected for better air quality.
  • Automatic bypass option to avoid having to pre-heat the incoming air during summer months.
  • Humidity controlled grilles installed for bathrooms to ensure levels of air extraction are reached automatically.
  • Motion sensor grilles installed in WC to boost air extraction when room is occupied.
  • Easy to maintain: Automatic filter clogging detector, System fault indicator, Motor casing holes for compressed air fan cleaning (Aldes Patent)

Technical Information


Heat Recovery Ventilation


Electronically commutated (ec) motors.

3 speeds available

Inegrated thermal protection

Casing in sheet metal, trim in expanded polypropylene

4 x 160mm diameter connectors

Quick, leak tight connection system

Supply: 230V ~50 Hz

Current Protection: 4A


Average Energy Consumption calculated to include use of high speed function for one hour per day

Extracted airflow (m³/h) 90 120 135 150 165 180 195 210
P Absorbed (W.Th.c) 38 42.7 50 59.7 70.4 90 100 105