Airflow testing and commissioning in Cambridgeshire

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 Cambridgeshire 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 March, Ely, St Ives, Peterborough and Cambridge.

Airflow testing in Cambridgeshire at a glance

Area: Cambridgeshire
Towns listed: 10, largest Peterborough
Postcode districts: SG19, PE27, PE28, PE15, CB6 and CB7
Price region: East of England
Survey: Charged visit, price agreed first

What the work involves

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 Cambridgeshire

Airflow testing and commissioning guide prices in Cambridgeshire
Work	Guide price
Airflow testing and commissioning sheet for extract fans (up to 6 fans) (per home)	£150–£310 inc VAT
MVHR or MEV commissioning test, every terminal measured and recorded (per system)	£255–£415 inc VAT
Rebalance and recommission an existing MVHR system (per system)	£255–£465 inc VAT

These ranges use our East of England rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.

When to get it looked at

After rebalancing or extending a system
Building control needs a commissioning sheet
You are selling a new build and the paperwork is missing

Rules in England

English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. For homes, it sets minimum extract rates such as 15 litres a second for a bathroom and 30 or 60 for a kitchen, and expects mechanical systems to be airflow-tested.

How the job runs

Book
Measure
Adjust
Record
Advise

Towns we cover in Cambridgeshire

Questions about airflow testing and commissioning in Cambridgeshire

Which rules apply to ventilation in Cambridgeshire?

In England, ventilation in new and altered homes is covered by Approved Document F of the Building Regulations. Landlords also have duties under the Housing Health and Safety Rating System, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.

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.

Which towns in Cambridgeshire do you cover?

All of Cambridgeshire, including March, Ely, St Ives, Peterborough and Cambridge. If your town is not listed, send the postcode and we will confirm.

Are prices different in Cambridgeshire?

Our guide prices are adjusted by region. In Cambridgeshire we use East of England rates, so airflow testing and commissioning sheet for extract fans (up to 6 fans) is typically £150 to £310 inc VAT per home.