Air handling units in Isleworth
Clear prices and written reports for air handling unit servicing and repairs in Isleworth.
- 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 Isleworth?
Guide price in Isleworth: £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.
Our coverage in Isleworth
Isleworth sits within London's dense commercial fabric: shopfronts, offices above, studios and venues, where outdoor unit positions and access need careful planning.
That includes premises in TW7 and the surrounding districts. Neighbouring towns we cover include Hounslow, Heston and Richmond. Each visit in Isleworth ends with a written report: what was checked, readings taken and anything that needs attention, priced separately for you to approve.
What you get
- Filter changes to the specified grade
- Fan, belt and motor checks
- Coil and drip tray cleaning
- Damper and actuator checks
- Heat recovery device checks
Guide prices in Isleworth
Prices below include our regional adjustment for London (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 Isleworth
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 Isleworth
Hygiene
Drip trays and coils must be kept clean to avoid biological growth.
Conservation areas
Historic streets and listed buildings in and around Isleworth are more likely to need planning permission for outdoor units on visible elevations. We check with the local planning authority before work is booked.
Replacement logistics
Large AHU replacements need craneage, road closures and careful programming.
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 Isleworth
- Warehouses and industrial: cooling for offices, mezzanines, control rooms and temperature-sensitive areas.
Compliance in England: 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).
FAQs for Isleworth
How much does an air handling unit service cost in Isleworth?
In Isleworth, 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 Hounslow, Heston and Richmond?
Yes. Alongside Isleworth, we also cover Hounslow, Heston and Richmond. Each has its own page with local guide prices.
Which postcodes do you cover in Isleworth?
All of them, including TW7. 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.
Get a guide price for Isleworth
The visit price is agreed before we book. We reply with a guide price or available dates.