Airflow testing and commissioning in Cumbria

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 Cumbria 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 Kendal, Whitehaven, Workington, Penrith and Ulverston.

Airflow testing in Cumbria at a glance

Area: Cumbria
Towns listed: 7, largest Carlisle
Postcode districts: CA15, CA10, CA11, LA12, LA15 and CA1
Price region: North West
Survey: Charged visit, price agreed 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.

Remedial advice

If a fan fails, we explain why and quote the fix.

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.

Guide prices in Cumbria

Airflow testing and commissioning guide prices in Cumbria
Work	Guide price
Airflow testing and commissioning sheet for extract fans (up to 6 fans) (per home)	£140–£280 inc VAT
MVHR or MEV commissioning test, every terminal measured and recorded (per system)	£235–£375 inc VAT
Rebalance and recommission an existing MVHR system (per system)	£235–£425 inc VAT

Guide prices using North West rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.

When to get it looked at

After MVHR or MEV installation by another company
A landlord file needs proof of ventilation
After rebalancing or extending a system

Rules in England

English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. 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 Cumbria

Questions about airflow testing and commissioning in Cumbria

Which rules apply to ventilation in Cumbria?

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.

How long does it take?

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

Can you test commercial systems?

Yes. We measure and balance commercial supply and extract systems too.

Which towns in Cumbria do you cover?

All of Cumbria, including Kendal, Whitehaven, Workington, Penrith and Ulverston. If your town is not listed, send the postcode and we will confirm.

Are prices different in Cumbria?

Our guide prices are adjusted by region. In Cumbria we use North West rates, so airflow testing and commissioning sheet for extract fans (up to 6 fans) is typically £140 to £280 inc VAT per home.