Environmental Installations
Saving Energy for your future

Heat Recovery Ventilation

MTD- Energy Recovery Ventilation

A whole house ventilation system ensures fresh filtered air, good health and a sense of well-being: vital considering we spend 70% of our time indoors!

The past decade has seen a huge emphasis on increasing the thermal efficiency of home building and we now have draught free, well-insulated homes. However, with this comes an increasing number of respiratory problems related to poor air quality. The most effective way to combat this is a balanced mechanical ventilation of the building; meaning as much freshly filtered air is fed into the living rooms as stale air is extracted from the kitchen and bathrooms.

A whole house ventilation system with heat recovery is not a heating system or an alternative to a heating system. It simply recovers the energy provided by any heating system, which would ordinarily be lost through traditional ventilation systems

The Benefits:

•  Delivers pure, fresh and filtered air 24/7
•  EU pollen filters to reduce allergies caused by dust and stale air
•  Uses twin, energy efficient and brushless, EC-DC motors
•  Has low energy consumption
•  Operates silently
•  Eliminated condensation
•  Allows closed window, which means improved air and sound quality
•  Ensure draught free ventilation
•  Is the recommended option in the building regulations Part L – 2006
•  Complies with building regulations Part F for domestic dwellings
•  Prevents mould
•  Removes Radon


How does it work?

The heat recovery ventilation system eliminates the need for traditional and energy inefficient wall vents. It works by extracting stale waster air from a home's wet areas (kitchen, toilet, shower room, utility room etc.). This 'warm' air is then brought through a couterflow heat exchanger, which warms as the air passes over it and then discharges the waster air to the atmosphere. At the same time, fresh cool air from outside is brought into the counterflow where it gets warmed and then distributed (via ducting) to the home's occupied rooms (bedrooms, living room, study, lounge etc.). The result for your home is continuous ventilation with minimum heat loss.


Indoor Air and Sound Quality

Designers for the MTD-ERV product range are proud of their attention to detail, in particular the commitment to noise reduction in the home. In addition to considering the noise of the unit itself, MTD designers considered the system layout, the type of air valve or grille: and both volume, and velocity.

MTD air distribution systems provide superior levels of acoustic performance, and have been certified as such. These systems have also been fire tested and certified.


The Products


This unit is the smallest in the MTD-ERV product range. It can be used as a retrofit option for apartments or decentralized ventilation. It is also suitable for surgery type waiting rooms.


For apartments or small townhouses up to 140sq.mt.

F7 filtration

Specific fan power 1.03W
Automatic 100% summer bypass
Condensation drain
Registered with Appendix Q



For residences up to 290sq.mt

F8 filtration
Proportional summer bypass
Integrated humidistats
Intelligent biorhythm



For residences up to 300sq.mt.

F8 filtration, F9 optional
Specific fan power 0.67 W/l/s
Optional enthalpy exchanger
LED control panel
Optional touch screen LCD control panel
Optional ground heat exchanger
Registered with Appendix Q



For residences up to 400sq.mt

Cooling and heating option
LCD touch screen control
Passive Haus Cert


Please contact the office for more information, or to get a specific quote for your home or business.


Grant Info
Northern Ireland
Republic of Ireland