Airflow testing and commissioning in Buckinghamshire

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.

If you are anywhere in Buckinghamshire, send the postcode and a few photos and we will tell you what we would recommend. Towns we cover include High Wycombe, Aylesbury, Bletchley, Amersham and Chesham.

Airflow testing in Buckinghamshire at a glance

Area: Buckinghamshire
Towns listed: 13, largest Milton Keynes
Postcode districts: HP7, HP5, HP6, HP9, SL9 and HP8
Price region: South East
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 Buckinghamshire

Airflow testing and commissioning guide prices in Buckinghamshire
Work	Guide price
Airflow testing and commissioning sheet for extract fans (up to 6 fans) (per home)	£160–£325 inc VAT
MVHR or MEV commissioning test, every terminal measured and recorded (per system)	£270–£435 inc VAT
Rebalance and recommission an existing MVHR system (per system)	£270–£490 inc VAT

South East rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.

Common reasons people call

Building control needs a commissioning sheet
You are selling a new build and the paperwork is missing
Fans seem weak and you want evidence

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 Buckinghamshire

Questions about airflow testing and commissioning in Buckinghamshire

Which towns in Buckinghamshire do you cover?

All of Buckinghamshire, including High Wycombe, Aylesbury, Bletchley, Amersham and Chesham. 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 Buckinghamshire?

Our guide prices are adjusted by region. In Buckinghamshire we use South East rates, so airflow testing and commissioning sheet for extract fans (up to 6 fans) is typically £160 to £325 inc VAT per home.

Is the survey free in Buckinghamshire?

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.