Commercial ventilation in Purley
Commercial ventilation for businesses in Purley — surveyed, designed and priced in writing before any work starts.
- Free site survey and fixed written quote
- Equipment, positions and price set out in writing
- Work planned around your opening hours
How much does commercial ventilation cost in Purley?
In Purley, guide prices run from about £3,795 to £31,500 per system, plus VAT. A typical job (supply and extract for a 150 m² office) usually comes to £8,895–£20,995 plus VAT. You get a fixed written quote after the free survey.
Commercial ventilation brings outdoor air into a building and removes stale air, using fans and ductwork to supply and extract air at the rates needed for the number of people and the activity.
Our coverage in Purley
Premises in Purley are often in mixed-use buildings with shared roofs and tight access, so outdoor unit positions are agreed early.
We work across Purley's postcode districts, including CR8. Nearby, we also cover Coulsdon (about 3 km), Wallington (about 4 km) and Carshalton (about 5 km). Commercial ventilation in Purley is priced from a written specification that lists the equipment, positions, controls and commissioning.
What is included
- Fresh-air rate calculation for each space
- Supply and extract fans, ductwork and grilles
- Filters, attenuators and fire dampers where required
- Air-flow measurement and balancing
- Commissioning records
Prices in Purley
Guide prices for Purley, set for London. Your fixed price comes in writing.
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| Toilet or kitchenette extract | £635–£1,850 | £762–£2,220 | per room |
| Supply and extract system, small premises | £3,795–£12,750 | £4,554–£15,300 | per system |
| CO2 demand control | £505–£1,595 | £606–£1,914 | per zone |
| Ductwork | £85–£245 | £102–£294 | per metre |
Ex VAT. Larger systems and fire-rated ductwork are priced from a full design.
The steps for a project in Purley
Assess
We work out how many people use each space and the fresh-air rate needed. For sites in Purley we confirm access and parking beforehand.
Design
Fan, duct and grille sizes are designed for air flow, noise and energy use.
Install
Ductwork and fans are installed and connected to controls.
Balance
Air flows are measured and balanced to the design.
Points to plan for in Purley
Noise
Fans and grilles are selected and attenuated to keep noise down.
Access and parking
Town-centre jobs in Purley often come down to access — loading restrictions, parking for the van and getting equipment onto a roof. We check this at survey and plan deliveries around it.
Building Regulations
New or altered ventilation in England must meet Approved Document F. We design to it and hand over the commissioning records.
Leased premises
If your Purley premises are leased, the landlord's written consent is usually needed for external units, wall penetrations and roof access. We provide drawings and data sheets for the request.
Who we work with in Purley
- Gyms and leisure: high-capacity cooling and fresh air for gym floors, studios and changing rooms.
- Healthcare and dental: clean, quiet cooling for surgeries, clinics, dental practices and care settings.
- Restaurants and cafés: dining rooms that stay comfortable next to a hot kitchen and a busy service.
- Salons and spas: comfortable salons and treatment rooms despite dryers, lamps and steam.
In England, systems holding 5 tonnes CO2 equivalent of refrigerant or more fall under GB F-gas rules, with regular leak checks and records; buildings with more than 12 kW of air conditioning in total also need a periodic energy inspection.
Common questions from businesses in Purley
How much does commercial ventilation cost in Purley?
Guide prices in Purley run from about £3,795 to £31,500 per system, plus VAT. A typical job (supply and extract for a 150 m² office) costs £8,895–£20,995 plus VAT. We fix the price in writing after a free survey.
Do you also cover Coulsdon, Wallington and Carshalton?
Yes. Alongside Purley, we also cover Coulsdon, Wallington and Carshalton. Each has its own page with local guide prices.
Which postcodes do you cover in Purley?
All of them, including CR8. Give us your postcode when you enquire and we will confirm the visit details.
Does air conditioning provide fresh air?
No. Most air conditioning recirculates room air. Fresh air needs a ventilation system or openable windows.
How much fresh air does an office need?
Guidance for offices is typically around 10 litres per second per person, with more for rooms with higher pollutant loads. We calculate it per space.
Talk to us about your premises in Purley
Free survey and fixed written quote. We reply with a guide price or to book the survey.