Air handling units in Caernarfon
Clear prices and written reports for air handling unit servicing and repairs in Caernarfon.
- 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 Caernarfon?
Guide price in Caernarfon: £235–£565 per unit, per visit ex VAT, with a typical job (AHU service with filter change) at £235–£565 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.
Caernarfon and surrounding areas
Most commercial premises in and around Caernarfon are shops, offices, salons, pubs and small industrial units.
We cover every Caernarfon postcode, including LL55. We also cover Bangor, Gwynedd, Holyhead and Llandudno, all within easy reach of Caernarfon. Each visit in Caernarfon ends with a written report: what was checked, readings taken and anything that needs attention, priced separately for you to approve.
What we do
- Filter changes to the specified grade
- Coil and drip tray cleaning
- Damper and actuator checks
- Heat recovery device checks
- Repairs, upgrades and full replacement
Local guide prices for Caernarfon
Prices below include our regional adjustment for Wales (5% below the UK guide).
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| AHU service with filter change | £235–£565 | £282–£678 | per visit |
| Fan / motor replacement | £1,395–£4,695 | £1,674–£5,634 | per fan |
| Full AHU replacement | £14,195–£65,995 | £17,034–£79,194 | per unit |
Ex VAT. Filters are charged at cost for the grade specified.
What happens on a visit in Caernarfon
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.
What to think about in Caernarfon
Filters
Filter grades should match the original design or current guidance for the building.
Leased premises
If your Caernarfon 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.
Replacement logistics
Large AHU replacements need craneage, road closures and careful programming.
Access and parking
Town-centre jobs in Caernarfon often come down to access — loading restrictions, parking for the van and getting equipment onto a roof. We check this at survey and plan deliveries around it.
Premises we work in around Caernarfon
- Warehouses and industrial: cooling for offices, mezzanines, control rooms and temperature-sensitive areas.
Compliance in Wales: refrigerant work falls under GB F-gas rules, and buildings with more than 12 kW of air conditioning in total need a periodic energy inspection (often called TM44).
Common questions from businesses in Caernarfon
How much does an air handling unit service cost in Caernarfon?
In Caernarfon, expect about £235–£565 per unit, per visit, plus VAT. A typical job (AHU service with filter change) is £235–£565 plus VAT. Any parts or repairs are priced before we go ahead.
Do you also cover Bangor, Gwynedd, Holyhead and Llandudno?
Yes. Alongside Caernarfon, we also cover Bangor, Gwynedd, Holyhead and Llandudno. Each has its own page with local guide prices.
Which postcodes do you cover in Caernarfon?
All of them, including LL55. 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 often should an AHU be serviced?
Typically every three to six months, depending on use and filter loading.
Need air handling unit servicing and repairs in Caernarfon?
The visit price is agreed before we book. We reply with a guide price or available dates.