Air handling units (AHU) in Somerset

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 Somerset, from Portishead, Frome, Burnham-on-Sea, Bath and Weston-super-Mare. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.

Air handling units in Somerset at a glance

Area: Somerset
Towns listed: 19, largest Bath
Postcode districts: BS20, BS21, BS14, BS30, TA19 and TA20
Price region: South West
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.

EC fan retrofit

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

Controls upgrade

New controls, sensors and BMS integration.

Planned servicing

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

Guide prices in Somerset

Air handling units (AHU) guide prices in Somerset
Work	Guide price
Air handling unit replacement, small to medium unit, like-for-like position (per unit)	£10,350–£36,350 + VAT
Air handling unit service: filters, belts or EC fan check, coils, controls (per unit per visit)	£205–£410 + VAT

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

Common reasons people call

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. 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 Somerset

Questions about air handling units (AHU) in Somerset

Which towns in Somerset do you cover?

All of Somerset, including Portishead, Frome, Burnham-on-Sea, Bath and Weston-super-Mare. If your town is not listed, send the postcode and we will confirm.

Do you work on rooftop units?

Yes, with safe access arranged for roof work.

How much does an AHU replacement cost?

A small to medium AHU replacement in the same position typically costs £9,950 to £34,950 excluding VAT, depending on size, heat recovery and lifting.

Are prices different in Somerset?

Our guide prices are adjusted by region. In Somerset we use South West rates, so air handling unit replacement, small to medium unit, like-for-like position is typically £10,350 to £36,350 + VAT per unit.

Is the survey free in Somerset?

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.