Airflow testing and commissioning in Isle of Wight

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.

The Isle of Wight has every kind of building, from old terraces to new estates and business parks, and every job is designed around the building in front of us, not a standard kit.

Airflow testing in the Isle of Wight at a glance

Area: Isle of Wight
Towns listed: 4, largest Newport
Postcode districts: PO30, PO32, PO33, PO34, PO30 and PO31
Price region: South East
Survey: By arrangement, travel quoted first

What airflow testing and commissioning 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.

Extract fan tests

Each fan measured and compared with the Part F rate for the room.

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 the Isle of Wight

Airflow testing and commissioning guide prices in the Isle of Wight
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

Guide prices using South East rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first. Travel is quoted separately for this area.

When to get it looked at

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). 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 the Isle of Wight

Questions about airflow testing and commissioning in the Isle of Wight

Which towns in the Isle of Wight do you cover?

All of the Isle of Wight, including Newport, Ryde, Cowes and Sandown. If your town is not listed, send the postcode and we will confirm.

Is testing a legal requirement?

For new dwellings in England, mechanical ventilation must be commissioned and the results given to building control. For existing homes it is good practice and useful evidence.

How long does it take?

Most homes take under an hour; a full MVHR balance can take two to three hours.

Are prices different in the Isle of Wight?

Our guide prices are adjusted by region. In the Isle of Wight 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 the Isle of Wight?

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.

Airflow testing and commissioning in the Isle of Wight