Air handling units (AHU) in East Sussex

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.

Our team is based in Great Barr, Birmingham, and we work throughout East Sussex, from Rottingdean, Brighton, Eastbourne, Hastings and Hove. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.

Air handling units in East Sussex at a glance

Area: East Sussex
Towns listed: 15, largest Brighton
Postcode districts: BN2, TN6, TN7, BN3, BN41 and BN2
Price region: South East
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 East Sussex

Air handling units (AHU) guide prices in East Sussex
Work	Guide price
Air handling unit replacement, small to medium unit, like-for-like position (per unit)	£10,950–£38,450 + VAT
Air handling unit service: filters, belts or EC fan check, coils, controls (per unit per visit)	£215–£435 + 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.

When to get it looked at

Noisy plant rooms or rooftop units
Filters that are never changed
Corroded casings or leaking drain trays

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 East Sussex

Questions about air handling units (AHU) in East Sussex

Is the survey free in East Sussex?

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.

Can you work out of hours?

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

What does an AHU service cost?

A service visit typically costs £195 to £395 per unit excluding VAT, depending on size and access.

Which rules apply to ventilation in East Sussex?

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.

Which towns in East Sussex do you cover?

All of East Sussex, including Rottingdean, Brighton, Eastbourne, Hastings and Hove. If your town is not listed, send the postcode and we will confirm.