Air handling units (AHU) in Derbyshire

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 Derbyshire 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 Ilkeston, Swadlincote, Staveley, Belper and Heanor.

Air handling units in Derbyshire at a glance

Area: Derbyshire
Towns listed: 21, largest Derby
Postcode districts: DE12, S21, S43, DE5, DE56 and DE5
Price region: East Midlands
Survey: Free survey (UK mainland)

What air handling units (AHU) involves

Replacing the fan section with EC fans, or the whole unit with a modern heat recovery AHU, can cut running costs and noise while restoring airflow. 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.

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 Derbyshire

Air handling units (AHU) guide prices in Derbyshire
Work	Guide price
Air handling unit replacement, small to medium unit, like-for-like position (per unit)	£9,750–£34,250 + VAT
Air handling unit service: filters, belts or EC fan check, coils, controls (per unit per visit)	£190–£385 + VAT

Guide prices using East Midlands 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

Rooms that no longer get enough air
Rising energy bills from old plant
Frequent belt or fan failures

Rules 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.

How the job runs

Survey
Options
Plan
Install
Commission

Towns we cover in Derbyshire

Questions about air handling units (AHU) in Derbyshire

Are prices different in Derbyshire?

Our guide prices are adjusted by region. In Derbyshire we use East Midlands rates, so air handling unit replacement, small to medium unit, like-for-like position is typically £9,750 to £34,250 + VAT per unit.

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.

Can you work out of hours?

Yes. Changeovers and crane lifts are often done at weekends or evenings to avoid disruption.

Is the survey free in Derbyshire?

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.

Which rules apply to ventilation in Derbyshire?

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.