Thornbury, Gloucestershire
Commercial ventilation design and installation in Thornbury
Supply and extract with heat recovery for offices, shops, clinics and fit-outs. Covering Thornbury and BS32, BS35 and GL12.
- From £8,250 + VAT per system
- Free survey

We design and install supply and extract ventilation for Thornbury offices, clinics, salons and shops.
Whether the property is in the middle of Thornbury or one of the villages around it, the process is the same: a look at the building, a written price, then fitting and testing on the agreed day.
Commercial ventilation in Thornbury at a glance
- Town
- Thornbury, Gloucestershire
- Postcode districts
- BS32, BS35 and GL12
- Nearby
- Stoke Gifford (6 miles), Yate (6 miles) and Mangotsfield (8 miles)
- Price region
- South West
- Survey
- Free survey (UK mainland)
Commercial ventilation for Thornbury premises
Employers must make sure every enclosed workplace is ventilated by a sufficient quantity of fresh or purified air under the Workplace (Health, Safety and Welfare) Regulations 1992. In practice, designers work to rates such as 10 litres a second per person for offices, taken from Approved Document F and CIBSE guidance, and adjust for meeting rooms, kitchens and toilets.
Demand control
CO2 or occupancy sensors that slow the system when rooms are empty.
Design and build or install-only
We design it, or install to a consultant's drawings.
Guide prices in Thornbury
| Work | Guide price |
|---|---|
| Small office or shop: heat recovery unit, ductwork and controls (up to about 150 m²) (per system) | £8,250–£17,650 + VAT |
| Office supply and extract ventilation with heat recovery, during a fit-out (per m² of floor) | £55–£130 + VAT |
South West rates shown. Prices exclude VAT. The fixed price is confirmed in writing after we have seen the job.
Common reasons people call
- Old units that are noisy, inefficient or failing
- Stuffy meeting rooms and afternoon drowsiness
- More staff than the system was designed for
Rules that apply in England
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). Employers have a separate duty under the Workplace Regulations 1992 to provide effective and suitable ventilation.
Questions from Thornbury
Do you cover Thornbury and nearby?
Yes. We cover Thornbury and nearby places including Stoke Gifford, Yate, Mangotsfield and Dursley. Send your postcode and we will confirm.
Can you work as a subcontractor on a fit-out?
Yes. We can install to a main contractor's programme and consultants' drawings, and supply commissioning records for handover.
Do we need building regulations approval?
New or altered ventilation in non-domestic buildings usually forms part of the building control application for the works. We provide the design information and commissioning records needed.
What is the price of commercial ventilation in Thornbury?
Guide prices for Thornbury use South West rates: small office or shop: heat recovery unit, ductwork and controls (up to about 150 m²) is typically £8,250 to £17,650 + VAT per system. We confirm a fixed price in writing before any work starts.
Is the survey free in Thornbury?
For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.
Ask about working to your fit-out programme in Thornbury.
Commercial ventilation near Thornbury
More services in Thornbury
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.