New builds, extensions and testing, County Down
Airflow testing and commissioning in County Down
Calibrated flow-hood testing and commissioning sheets for fans, MEV and MVHR, across County Down.
- From £135 inc VAT per home
- By arrangement
Airflow testing measures how much air each fan or valve actually moves, using a calibrated flow hood, and records it against the required rates. It is how you prove a ventilation system works, and for new homes it is part of the building regulations.
Our team is based in Great Barr, Birmingham, and we work throughout County Down, from Banbridge, Dundonald, Holywood, Downpatrick and Bangor. Work here is by arrangement, with travel quoted in writing first.
Airflow testing in County Down at a glance
- Area
- County Down, Northern Ireland
- Towns listed
- 8, largest Bangor
- Postcode districts
- BT5, BT6, BT16, BT19, BT35 and BT32
- Price region
- Northern Ireland
- Survey
- By arrangement, travel quoted first
What the work involves
Testing is also useful outside new builds: it shows landlords and homeowners whether existing fans meet the rates, and it is the first step in rebalancing an MVHR system that no longer feels right.
Remedial advice
If a fan fails, we explain why and quote the fix.
MEV and dMEV commissioning
Trickle and boost rates measured and set.
MVHR commissioning
Supply and extract at every valve measured and balanced.
Guide prices in County Down
| Work | Guide price |
|---|---|
| Airflow testing and commissioning sheet for extract fans (up to 6 fans) (per home) | £135–£270 inc VAT |
| MVHR or MEV commissioning test, every terminal measured and recorded (per system) | £225–£365 inc VAT |
| Rebalance and recommission an existing MVHR system (per system) | £225–£410 inc VAT |
These ranges use our Northern Ireland rates. Prices include VAT at 20%. You get a fixed written price before any work is booked. Travel is quoted separately for this area.
Common reasons people call
- A landlord file needs proof of ventilation
- After rebalancing or extending a system
- Building control needs a commissioning sheet
Rules in Northern Ireland
In Northern Ireland, ventilation is covered by the Building Regulations (Northern Ireland) and Technical Booklet K. We design to the Northern Ireland guidance and measure the airflow achieved.
How the job runs
- Book
- Measure
- Adjust
- Record
- Advise
Towns we cover in County Down
Questions about airflow testing and commissioning in County Down
Is the survey free in County Down?
Visits here are by arrangement. Because of the ferry or long travel involved, we quote travel separately and in writing before you commit, and we can often combine visits to keep the cost down.
How much does ventilation airflow testing cost?
Testing up to six extract fans costs £145 to £295 including VAT, and commissioning a full MVHR or MEV system £245 to £395.
What equipment is used?
A flow hood that fits over the fan or valve and measures airflow in litres a second, calibrated within the last 12 months.
Which rules apply to ventilation in County Down?
In Northern Ireland, ventilation is covered by Technical Booklet K of the Building Regulations (Northern Ireland). Workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations (Northern Ireland) 1993.
Which towns in County Down do you cover?
All of County Down, including Banbridge, Dundonald, Holywood, Downpatrick and Bangor. If your town is not listed, send the postcode and we will confirm.
Other services in County Down
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.