Supply and extract systems, run as one
Fresh air in, stale air out, and the plant that drives both — installed and balanced as a single system rather than two separate runs.
Supply and extract, plant to terminal
A ventilation system is only as good as its weakest connection. We install the supply and extract sides together so the airflow on one is set against the airflow on the other.
That covers the plant connections, the ductwork, the terminals and the balancing — one scope, one point of responsibility.
Connections made at the unit
Rigid and flexible connections at the plant, sealed and supported so the unit is not carrying the weight of the ductwork.
Fan and unit connections
Where the ductwork meets the plant, the connection is made, sealed and independently supported.
- Rigid and flexible connections made to the unit
- Ductwork supported in its own right, not off the plant
- Vibration and noise checked where the run leaves the plant room
- Access left clear for future service of the unit
Set against the system, not the branch
Balancing a ventilation system means setting every terminal against every other terminal, with the plant running.
What balancing involves
- Airflow measured at each supply and extract terminal
- Dampers set branch by branch until the system is even
- Leakage points traced along the run and made good
- Readings re-checked before handover
What you get at the end
A system running as designed, with the terminals set where they were asked to be.
Any terminal that cannot be brought into balance is reported to you with the reason, rather than left as it is.
Ventilation system questions
What tends to come up before a system goes in.
- Do you install the fans and plant as well as the ductwork?
We connect them. Fan and plant connections are made, sealed and supported as part of the system, which is where most ventilation problems start if they are left to someone else. - Can a ventilation system be added to a building that has none?
Often, yes — it depends on where the plant can sit and where the ductwork can pass. That is exactly what a survey is for. - How is the system set once it is running?
Airflow is measured at every terminal and the dampers are set branch by branch until the system is even, with the plant running, before handover.
Planning a ventilation system?
Tell us the space and what it has to do. We will look at where the plant and the ductwork can go, then quote the system as one job.