Semi-centralised supply and extract air system
with heat recovery via heat exchangers, constant air flow
If the layout of the building limits your options for a centrally sited air handling unit, e.g. in terraced housing, then you may need multiple medium-sized units so that each unit ventilates two or more housing units.
No extensive ductwork
A semi-centralised solution eliminates the need for extensive ducting, the advantage of which is relatively low system pressure falls, which in turn results in an energy-efficient and quiet system. Semi-centralised units can be served by a counterflow heat exchanger or a rotary heat exchanger.
The disadvantage, compared with a centralised system is that the number of service points increases, which then increases the servicing and maintenance costs.
Advantages
- Balanced ventilation
- Reduced risk of draughts and noise
- Several heat exchange options
- Guaranteed indoor climate
- Efficient heat recovery
Disadvantages
- Slightly more service points than in a centralised system
- Slightly higher maintenance costs
Products
Learn more about other system types
We are here to help!
Do you want more information? Fill in the form below and we'll get back to you.