Air handling units (AHU) in Gwent

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.

Gwent has every kind of building, from old terraces to new estates and business parks, and every job is designed around the building in front of us, not a standard kit.

Air handling units in Gwent at a glance

Area: Gwent, Wales
Towns listed: 17, largest Newport
Postcode districts: CF82, NP11, GL16, NP25, NP10 and NP19
Price region: Wales
Survey: Free survey (UK mainland)

How we do it

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.

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.

Controls upgrade

New controls, sensors and BMS integration.

Guide prices in Gwent

Air handling units (AHU) guide prices in Gwent
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

Wales rates shown. Prices exclude VAT. The fixed price is confirmed in writing after we have seen the job.

Common reasons people call

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

Rules in Wales

Wales has its own Part F ventilation guidance, published by the Welsh Government, and work is checked by building control. Employers in Wales also have the Workplace Regulations 1992 duty to ventilate enclosed workplaces.

How the job runs

Survey
Options
Plan
Install
Commission

Towns we cover in Gwent

Questions about air handling units (AHU) in Gwent

Are prices different in Gwent?

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

What does an AHU service cost?

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

Do you work on rooftop units?

Yes, with safe access arranged for roof work.

Is the survey free in Gwent?

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 Gwent?

In Wales, the Welsh Government's own Approved Document F (2022 edition) applies to ventilation in homes, with a new edition taking effect on 4 March 2027. Rented homes must be fit for human habitation under the Renting Homes (Wales) Act 2016, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.