Commercial ventilation, Gwynedd and Anglesey
Air handling units (AHU) in Gwynedd and Anglesey
AHU replacement, EC fan upgrades, controls and planned servicing, across Gwynedd and Anglesey.
- From £9,450 + 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.
Our team is based in Great Barr, Birmingham, and we work throughout Gwynedd and Anglesey, from Holyhead and Bangor. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
Air handling units in Gwynedd and Anglesey at a glance
- Area
- Gwynedd and Anglesey, Wales
- Towns listed
- 2, largest Bangor
- Postcode districts
- LL58, LL65 and LL57
- Price region
- Wales
- Survey
- Free survey (UK mainland)
What the work 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.
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 Gwynedd and Anglesey
| 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 |
These ranges use our Wales rates. Prices exclude VAT. You get a fixed written price before any work is booked.
Signs it is time to call us
- Rising energy bills from old plant
- Frequent belt or fan failures
- Noisy plant rooms or rooftop units
Rules in Wales
In Wales, ventilation follows the Welsh Approved Document F rather than the English version, with building control checking notifiable work. The Workplace (Health, Safety and Welfare) Regulations 1992 also apply, requiring sufficient fresh or purified air.
How the job runs
- Survey
- Options
- Plan
- Install
- Commission
Towns we cover in Gwynedd and Anglesey
Questions about air handling units (AHU) in Gwynedd and Anglesey
Which towns in Gwynedd and Anglesey do you cover?
All of Gwynedd and Anglesey, including Holyhead and Bangor. If your town is not listed, send the postcode and we will confirm.
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.
Are prices different in Gwynedd and Anglesey?
Our guide prices are adjusted by region. In Gwynedd and Anglesey 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.
Is the survey free in Gwynedd and Anglesey?
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.
Other services in Gwynedd and Anglesey
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.