Air handling units (AHU) in Devon

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 Devon 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 Exeter, Paignton, Torquay, Newton Abbot and Exmouth.

Air handling units in Devon at a glance

Area: Devon
Towns listed: 21, largest Plymouth
Postcode districts: TQ12, EX7, EX8, EX31, EX32 and EX38
Price region: South West
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.

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 Devon

Air handling units (AHU) guide prices in Devon
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

Guide prices using South West 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

Corroded casings or leaking drain trays
Rooms that no longer get enough air
Rising energy bills from old plant

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 Devon

Questions about air handling units (AHU) in Devon

Which towns in Devon do you cover?

All of Devon, including Exeter, Paignton, Torquay, Newton Abbot and Exmouth. If your town is not listed, send the postcode and we will confirm.

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.

Are prices different in Devon?

Our guide prices are adjusted by region. In Devon 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 Devon?

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.