New builds, extensions and testing, Dyfed
Airflow testing and commissioning in Dyfed
Calibrated flow-hood testing and commissioning sheets for fans, MEV and MVHR, across Dyfed.
- From £140 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.
Dyfed 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 Dyfed at a glance
- Area
- Dyfed, Wales
- Towns listed
- 6, largest Llanelli
- Postcode districts
- SY23, SY24, SA31, SA33, SA61 and SA62
- Price region
- Wales
- Survey
- Charged visit, price agreed first
What the work involves
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.
MVHR commissioning
Supply and extract at every valve measured and balanced.
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.
Guide prices in Dyfed
| 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 |
These ranges use our Wales 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 Wales
Wales has its own Part F ventilation guidance, published by the Welsh Government, and work is checked by building control. Extract rates and commissioning are checked against the Welsh guidance on every job.
How the job runs
- Book
- Measure
- Adjust
- Record
- Advise
Towns we cover in Dyfed
Questions about airflow testing and commissioning in Dyfed
Are prices different in Dyfed?
Our guide prices are adjusted by region. In Dyfed we use Wales rates, so airflow testing and commissioning sheet for extract fans (up to 6 fans) is typically £140 to £280 inc VAT per home.
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.
Is the survey free in Dyfed?
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.
Which rules apply to ventilation in Dyfed?
In Wales, the Welsh Government's own Approved Document F (2022 edition) applies to ventilation in homes, with a new edition taking effect on 4 March 2027. Rented homes must be fit for human habitation under the Renting Homes (Wales) Act 2016, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.
Other services in Dyfed
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.