Farnham, Surrey
Commercial ventilation design and installation in Farnham
Supply and extract with heat recovery for offices, shops, clinics and fit-outs. Covering Farnham and GU9, GU10 and GU11.
- From £8,750 + VAT per system
- Free survey
We can work as the ventilation subcontractor on Farnham fit-outs.
Farnham is about 104 miles from our base in Great Barr, Birmingham. We book Farnham visits by appointment and confirm the date in writing. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
Commercial ventilation in Farnham at a glance
- Town
- Farnham, Surrey
- Postcode districts
- GU9, GU10 and GU11
- Nearby
- Hale (1 mile), Aldershot (3 miles) and Fleet (5 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
Commercial ventilation for Farnham 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 Farnham
| Work | Guide price |
|---|---|
| Small office or shop: heat recovery unit, ductwork and controls (up to about 150 m²) (per system) | £8,750–£18,650 + VAT |
| Office supply and extract ventilation with heat recovery, during a fit-out (per m² of floor) | £60–£140 + VAT |
Guide prices using South East rates. Prices exclude VAT. A guide price is not a quote: we confirm a fixed price in writing first.
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
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. Employers have a separate duty under the Workplace Regulations 1992 to provide effective and suitable ventilation.
Questions from Farnham
What is the price of commercial ventilation in Farnham?
Guide prices for Farnham use South East rates: small office or shop: heat recovery unit, ductwork and controls (up to about 150 m²) is typically £8,750 to £18,650 + VAT per system. We confirm a fixed price in writing before any work starts.
How much does commercial ventilation cost?
A small office or shop with a single heat recovery unit typically costs £7,950 to £16,950 excluding VAT. Larger fit-outs are often priced at around £55 to £125 per square metre of floor, depending on design and ceiling access.
How much fresh air does an office need?
A common design rate for offices is 10 litres a second per person, used in Approved Document F and CIBSE guidance, with more for meeting rooms and areas with higher occupancy.
Is the survey free in Farnham?
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.
How do I get a price for commercial ventilation in Farnham?
Use the guide price tool, the form on this page, live chat, WhatsApp or call 0800 088 6341. A postcode and a couple of photos help us give you a useful answer first time.
Send your Farnham drawings and occupancy numbers for a design and price.
Commercial ventilation near Farnham
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