New builds, extensions and testing, Powys
Airflow testing and commissioning in Powys
Calibrated flow-hood testing and commissioning sheets for fans, MEV and MVHR, across Powys.
- 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.
Powys 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 Powys at a glance
- Area
- Powys, Wales
- Towns listed
- 1, largest Newtown
- Postcode districts
- SY16
- Price region
- Wales
- Survey
- Charged visit, price agreed first
How we do it
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 Powys
| 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 |
Wales rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Common reasons people call
- 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
In Wales, ventilation follows the Welsh Approved Document F rather than the English version, with building control checking notifiable work. We design to the Welsh rates and commission mechanical systems so the results can be recorded.
How the job runs
- Book
- Measure
- Adjust
- Record
- Advise
Towns we cover in Powys
Questions about airflow testing and commissioning in Powys
Which rules apply to ventilation in Powys?
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.
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.
What equipment is used?
A flow hood that fits over the fan or valve and measures airflow in litres a second, calibrated within the last 12 months.
Which towns in Powys do you cover?
All of Powys, including Newtown. If your town is not listed, send the postcode and we will confirm.
Are prices different in Powys?
Our guide prices are adjusted by region. In Powys 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.
Other services in Powys
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.