Air handling units in London
Keep your systems in London running: air handling unit servicing and repairs, with any extra work explained and priced before it starts.
- 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 London?
Guide price in London: £315–£760 per unit, per visit ex VAT, with a typical job (AHU service with filter change) at £315–£760 plus VAT. Parts and repairs are only done once you approve the price.
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.
Covering London and nearby
We cover all of London, including Brent, Islington, Bexley, Barking and Sutton. Each town below has its own page with local guide prices.
Postcode districts we cover include BR1, E16, EN5, N16, SE7, SW8, W1 and WC2R. Businesses across London can combine servicing with any F-gas leak checks their systems need, which saves a separate attendance.
What the job covers
- Filter changes to the specified grade
- Fan, belt and motor checks
- Coil and drip tray cleaning
- Heat recovery device checks
- Repairs, upgrades and full replacement
Air handling units prices in London
These guide prices are adjusted for London, where labour and access costs run about 28% above the UK guide.
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| AHU service with filter change | £315–£760 | £378–£912 | per visit |
| Fan / motor replacement | £1,850–£6,350 | £2,220–£7,620 | per fan |
| Full AHU replacement | £19,150–£88,995 | £22,980–£106,794 | per unit |
Ex VAT. Filters are charged at cost for the grade specified.
What happens on a visit in London
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.
Before you book in London
Energy
Fan upgrades and better controls can cut energy use significantly on older units.
Leased premises
If your London 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.
Filters
Filter grades should match the original design or current guidance for the building.
Shared buildings
In multi-let buildings, roof space, risers and plant areas are often controlled by a managing agent. We work to their permits and method-statement requirements.
Typical premises in London
- Warehouses and industrial: cooling for offices, mezzanines, control rooms and temperature-sensitive areas.
Two rules matter for most businesses in England: GB F-gas rules (leak checks from 5 tonnes CO2e) and the periodic energy inspection for more than 12 kW of air conditioning.
Common questions from businesses in London
How much does an air handling unit service cost in London?
In London, expect about £315–£760 per unit, per visit, plus VAT. A typical job (AHU service with filter change) is £315–£760 plus VAT. Any parts or repairs are priced before we go ahead.
Do you also cover Surrey, Hertfordshire and Essex?
Yes. Alongside London, we also cover Surrey, Hertfordshire and Essex. Each has its own page with local guide prices.
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.
Get a guide price for London
The visit price is agreed before we book. We reply with a guide price or available dates.