Air handling units (AHU) in Greater Manchester

An air handling unit (AHU) is the central plant that filters, moves and often heats, cools or recovers heat from the air for a building's ventilation system. We replace ageing units, upgrade fans and controls, and service AHUs so they keep delivering their design airflows.

Across Greater Manchester the job is priced the same way wherever you are: what is fitted, how long it takes and how far we travel. Towns we cover include Oldham, Wigan, Bolton, Stockport and Salford.

Air handling units in Greater Manchester at a glance

Area: Greater Manchester
Towns listed: 66, largest Manchester
Postcode districts: SK6, M31, M41, BL1, BL5 and M1
Price region: North West
Survey: Free survey (UK mainland)

What air handling units (AHU) involves

New units must meet current ecodesign rules for fan efficiency and heat recovery. Replacements often involve crane lifts, roof work and out-of-hours changeovers. We plan the lift, temporary arrangements and isolations with you so the building can keep working.

Planned servicing

Filters, belts, coils, drains and controls on a schedule.

Like-for-like replacement

New unit in the same position, connected to existing ductwork.

EC fan retrofit

Belt-driven fans replaced with direct-drive EC fans.

Guide prices in Greater Manchester

Air handling units (AHU) guide prices in Greater Manchester
Work	Guide price
Air handling unit replacement, small to medium unit, like-for-like position (per unit)	£9,450–£33,200 + VAT
Air handling unit service: filters, belts or EC fan check, coils, controls (per unit per visit)	£185–£375 + 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.

Common reasons people call

Frequent belt or fan failures
Noisy plant rooms or rooftop units
Filters that are never changed

Rules in England

English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. 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

Survey
Options
Plan
Install
Commission

Towns we cover in Greater Manchester

Questions about air handling units (AHU) in Greater Manchester

Which rules apply to ventilation in Greater Manchester?

In England, ventilation in new and altered homes is covered by Approved Document F of the Building Regulations. Landlords also have duties under the Housing Health and Safety Rating System, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.

How often should an AHU be serviced?

Most AHUs need servicing at least twice a year, with filters changed more often in dirty environments. SFG20 schedules are commonly used to set frequencies.

Is it worth replacing belt-driven fans with EC fans?

Often yes. EC fans are usually more efficient, quieter and need no belt changes, and the retrofit can cost much less than a new unit.

Which towns in Greater Manchester do you cover?

All of Greater Manchester, including Oldham, Wigan, Bolton, Stockport and Salford. If your town is not listed, send the postcode and we will confirm.

Are prices different in Greater Manchester?

Our guide prices are adjusted by region. In Greater Manchester we use North West rates, so air handling unit replacement, small to medium unit, like-for-like position is typically £9,450 to £33,200 + VAT per unit.