New builds, extensions and testing, Bristol
Airflow testing and commissioning in Bristol
Calibrated flow-hood testing and commissioning sheets for fans, MEV and MVHR, across Bristol.
- From £150 inc VAT per home
- Charged visit, price agreed first
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.
Across Bristol the job is priced the same way wherever you are: what is fitted, how long it takes and how far we travel. Towns we cover include Bristol.
Airflow testing in Bristol at a glance
- Area
- Bristol
- Towns listed
- 1, largest Bristol
- Postcode districts
- BS1 and BS10
- Price region
- South West
- Survey
- Charged visit, price agreed first
How we do it
Approved Document F expects mechanical ventilation in new dwellings to be tested with a flow device that has been calibrated within the last 12 months, and the results recorded on a commissioning sheet. The person commissioning should be registered with a competent person scheme for ventilation or show evidence of competence; we tell you who will sign your sheet when we quote. 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.
MEV and dMEV commissioning
Trickle and boost rates measured and set.
MVHR commissioning
Supply and extract at every valve measured and balanced.
Remedial advice
If a fan fails, we explain why and quote the fix.
Guide prices in Bristol
| Work | Guide price |
|---|---|
| Airflow testing and commissioning sheet for extract fans (up to 6 fans) (per home) | £150–£305 inc VAT |
| MVHR or MEV commissioning test, every terminal measured and recorded (per system) | £255–£410 inc VAT |
| Rebalance and recommission an existing MVHR system (per system) | £255–£465 inc VAT |
South West rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
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 England
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
How the job runs
- Book
- Measure
- Adjust
- Record
- Advise
Towns we cover in Bristol
Questions about airflow testing and commissioning in Bristol
Which towns in Bristol do you cover?
All of Bristol, including Bristol. If your town is not listed, send the postcode and we will confirm.
Can you test commercial systems?
Yes. We measure and balance commercial supply and extract systems too.
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.
Are prices different in Bristol?
Our guide prices are adjusted by region. In Bristol we use South West rates, so airflow testing and commissioning sheet for extract fans (up to 6 fans) is typically £150 to £305 inc VAT per home.
Is the survey free in Bristol?
This is a charged visit because it is servicing, testing or repair work. We tell you the cost before booking. Surveys for new installations on the UK mainland are free.
Other services in Bristol
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.