Air handling units in Castlereagh
Air handling unit servicing and repairs in Castlereagh, with the visit price agreed before we come and a written report after.
- 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 Castlereagh?
Guide price in Castlereagh: £225–£545 per unit, per visit ex VAT, with a typical job (AHU service with filter change) at £225–£545 plus VAT. Nothing beyond the agreed visit goes ahead without your say-so.
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.
Where we work around Castlereagh
Castlereagh has a compact centre of shops, cafés and offices, with business units on its outskirts. Belfast is about 4 km away.
That includes premises in BT5 and BT6 and the surrounding districts. We also work in nearby Belfast, Newtownabbey and Lisburn. If a system in Castlereagh is old and keeps failing, we will tell you honestly whether repair or replacement makes more sense.
What we do
- Filter changes to the specified grade
- Fan, belt and motor checks
- Coil and drip tray cleaning
- Damper and actuator checks
- Heat recovery device checks
Prices in Castlereagh
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 Castlereagh 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.
Things to check in Castlereagh
Filters
Filter grades should match the original design or current guidance for the building.
Leased premises
If your Castlereagh premises are leased, the landlord's written consent is usually needed for external units, wall penetrations and roof access. We provide drawings and data sheets for the request.
Energy
Fan upgrades and better controls can cut energy use significantly on older units.
Working hours
Most Castlereagh businesses prefer noisy work outside trading hours. Early starts, evenings and weekends can be arranged and are priced up front.
Typical premises in Castlereagh
- 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 Castlereagh?
In Castlereagh, 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 Belfast, Newtownabbey and Lisburn?
Yes. Alongside Castlereagh, we also cover Belfast, Newtownabbey and Lisburn. Each has its own page with local guide prices.
Which postcodes do you cover in Castlereagh?
All of them, including BT5 and BT6. Give us your postcode when you enquire and we will confirm the visit details.
Can you upgrade old AHU fans?
Yes. EC fan upgrades are a common way to cut energy use without replacing the whole unit.
How long do air handling units last?
Commonly 20 years or more with good maintenance, though fans and controls may need replacing sooner.
Get a guide price for Castlereagh
The visit price is agreed before we book. We reply with a guide price or available dates.