Commercial ventilation, Dorset
Air handling units (AHU) in Dorset
AHU replacement, EC fan upgrades, controls and planned servicing, across Dorset.
- From £10,350 + VAT per unit
- Free survey
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 Dorset 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 Wimborne Minster, Canford Heath, Bournemouth, Poole and Weymouth.
Air handling units in Dorset at a glance
- Area
- Dorset
- Towns listed
- 14, largest Bournemouth
- Postcode districts
- BH12, BH17, BH22, BH24, DT3 and DT4
- Price region
- South West
- Survey
- Free survey (UK mainland)
What air handling units (AHU) involves
Many AHUs in older offices, schools and retail units run on belt-driven fans, clogged filters and controls nobody understands. 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.
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 Dorset
| 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.
Signs it is time to call us
- Rooms that no longer get enough air
- Rising energy bills from old plant
- Frequent belt or fan failures
Rules in England
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). 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 Dorset
- Bournemouth
- Poole
- Weymouth
- Christchurch
- Ferndown
- Dorchester
- Wimborne Minster
- Canford Heath
- Verwood
- Portland
- Bridport
- Blandford Forum
- Swanage
- Broadstone
Questions about air handling units (AHU) in Dorset
Which rules apply to ventilation in Dorset?
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.
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.
Which towns in Dorset do you cover?
All of Dorset, including Wimborne Minster, Canford Heath, Bournemouth, Poole and Weymouth. If your town is not listed, send the postcode and we will confirm.
Are prices different in Dorset?
Our guide prices are adjusted by region. In Dorset 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.
Other services in Dorset
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