Commercial ventilation design and installation in Merseyside

Commercial ventilation in Merseyside is often part of an office or shop fit-out.

Every job in Merseyside gets a written quote before it starts and a commissioning record when it finishes. We cover Liverpool, Birkenhead, St Helens, Southport and Wallasey and the villages around them.

Commercial ventilation in Merseyside at a glance

Area: Merseyside
Towns listed: 38, largest Liverpool
Postcode districts: L9, L11, L4, L5, CH46 and CH47
Price region: North West
Survey: Free survey (UK mainland)

What commercial ventilation design and installation involves

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. Typical jobs are fit-outs and refurbishments: a new tenant needs ventilation to match a new layout, an old system cannot keep up with more staff, or a change of use needs a fresh design.

Toilet and kitchenette extract

Dedicated extract for welfare areas.

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 Merseyside

Commercial ventilation design and installation guide prices in Merseyside
Work	Guide price
Small office or shop: heat recovery unit, ductwork and controls (up to about 150 m²) (per system)	£7,550–£16,100 + VAT
Office supply and extract ventilation with heat recovery, during a fit-out (per m² of floor)	£50–£120 + VAT

Guide prices using North West rates. Prices exclude VAT. A guide price is not a quote: we confirm a fixed price in writing first.

When to get it looked at

Stuffy meeting rooms and afternoon drowsiness
More staff than the system was designed for
A fit-out or change of layout

Rules in England

In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). Workplaces must also be ventilated with a sufficient quantity of fresh or purified air under the Workplace (Health, Safety and Welfare) Regulations 1992.

How the job runs

Site survey
Design
Install
Commission
Hand over

Towns we cover in Merseyside

Questions about commercial ventilation design and installation in Merseyside

Which towns in Merseyside do you cover?

All of Merseyside, including Liverpool, Birkenhead, St Helens, Southport and Wallasey. If your town is not listed, send the postcode and we will confirm.

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.

Are prices different in Merseyside?

Our guide prices are adjusted by region. In Merseyside we use North West rates, so small office or shop: heat recovery unit, ductwork and controls (up to about 150 m²) is typically £7,550 to £16,100 + VAT per system.

Is the survey free in Merseyside?

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.

Book a free site survey in Merseyside and send floor plans if you have them.