Air handling units in County Down
Air handling unit servicing and repairs in County Down for offices, shops, restaurants and plant rooms.
- Visit price agreed before we book
- Written report after every visit
- F-gas records updated where required
How much does an air handling unit service cost in County Down?
Guide price in County Down: £225–£545 per unit, per visit ex VAT, with a typical job (AHU service with filter change) at £225–£545 plus VAT. Any extra work is priced and approved before it starts.
An air handling unit (AHU) is a large central unit that filters, heats, cools and moves air through a building's ductwork, often with heat recovery.
Our coverage in County Down
We cover all of County Down, including Bangor, County Down, Castlereagh, Newtownards and Banbridge. Each town below has its own page with local guide prices.
Postcode districts we cover include BT4, BT18, BT22, BT24, BT27, BT30, BT32 and BT34. For air handling unit servicing and repairs in County Down, roof and high-level access is planned in advance, so the visit is not wasted waiting for a tower or a key.
What the job covers
- Fan, belt and motor checks
- Coil and drip tray cleaning
- Damper and actuator checks
- Heat recovery device checks
- Repairs, upgrades and full replacement
Air handling units prices in County Down
Prices below include our regional adjustment for Northern Ireland (8% below the UK guide).
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| AHU service with filter change | £225–£545 | £270–£654 | per visit |
| Fan / motor replacement | £1,350–£4,550 | £1,620–£5,460 | per fan |
| Full AHU replacement | £13,750–£63,995 | £16,500–£76,794 | per unit |
Ex VAT. Filters are charged at cost for the grade specified.
How a visit in County Down works
Inspect
We record the AHU type, condition, filter grades and controls.
Service
Filters are changed and components cleaned and checked.
Report
Readings and recommendations are reported.
Upgrade or replace
Where needed, we quote for fan upgrades or replacement.
Points to plan for in County Down
Hygiene
Drip trays and coils must be kept clean to avoid biological growth.
Working hours
Most County Down businesses prefer noisy work outside trading hours. Early starts, evenings and weekends can be arranged and are priced up front.
Filters
Filter grades should match the original design or current guidance for the building.
Conservation areas
Historic streets and listed buildings in and around County Down are more likely to need planning permission for outdoor units on visible elevations. We check with the council's planning service before work is booked.
Types of premises we cover in County Down
- Warehouses and industrial: cooling for offices, mezzanines, control rooms and temperature-sensitive areas.
In Northern Ireland, systems holding 5 tonnes CO2 equivalent of refrigerant or more fall under EU F-gas rules that apply in Northern Ireland, with regular leak checks and records; buildings with more than 12 kW of air conditioning in total also need a periodic energy inspection.
Your questions answered
How much does an air handling unit service cost in County Down?
In County Down, expect about £225–£545 per unit, per visit, plus VAT. A typical job (AHU service with filter change) is £225–£545 plus VAT. Any parts or repairs are priced before we go ahead.
Do you also cover County Antrim, County Armagh and County Tyrone?
Yes. Alongside County Down, we also cover County Antrim, County Armagh and County Tyrone. Each has its own page with local guide prices.
How often should an AHU be serviced?
Typically every three to six months, depending on use and filter loading.
How long do air handling units last?
Commonly 20 years or more with good maintenance, though fans and controls may need replacing sooner.
Need air handling unit servicing and repairs in County Down?
The visit price is agreed before we book. We reply with a guide price or available dates.