Ceiling cassette air conditioning in Derry
A free survey, a clear specification and a fixed price for ceiling cassette air conditioning in Derry.
- Free site survey and fixed written quote
- Unit sizes, refrigerant and price set out in writing
- Work planned around your opening hours
How much does a ceiling cassette cost in Derry?
Budget roughly £1,995–£4,550 per cassette ex VAT in Derry. For a typical job — shop or restaurant with 2–3 cassettes — expect £4,550–£12,395 plus VAT. Your exact price is fixed in writing once we have surveyed.
A ceiling cassette is an air conditioning indoor unit that sits inside a suspended ceiling with only a square grille visible.
Our coverage in Derry
Derry is a large town in County Londonderry, with a busy centre, retail parks and industrial estates on its edges.
Postcode districts we cover in Derry include BT47. We also cover Strabane, Limavady and Coleraine, all within easy reach of Derry. Buildings across County Londonderry range from converted period offices to modern units with deep ceiling voids, so we measure each site rather than relying on a standard package.
Included as standard
- Compact 600 mm or full-size cassette selection
- Pipework, condensate pump and drain connection
- Fresh-air spigot connection where ventilation ductwork is available
- Wired controller or central control
- Commissioning and F-gas records
Prices in Derry
Prices below include our regional adjustment for Northern Ireland (8% below the UK guide).
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| Compact 600 mm cassette (up to about 5 kW) | £1,995–£3,650 | £2,394–£4,380 | per unit |
| Full-size four-way cassette (7–14 kW) | £2,695–£4,550 | £3,234–£5,460 | per unit |
| Ceiling tile and grid alterations | £85–£365 | £102–£438 | per unit |
| Fresh-air spigot connection | £180–£545 | £216–£654 | per unit |
Ex VAT, supply and install on a single or multi-split system.
How it works in Derry
Check the void
We confirm void depth, grid size and any obstructions such as beams, sprinkler pipes or ductwork.
Set positions
Cassettes are placed against the lighting and grid layout so air reaches the whole space.
Hang and connect
Units are hung on drop rods, connected to pipework and the condensate line. We keep work areas in Derry screened and tidy at the end of each day.
Test and commission
The condensate pump is water-tested, the system pressure tested and charged, and air directions set.
Things to check in Derry
Ceiling grid
Compact cassettes drop into a 600 mm grid; full-size units need the grid adapting around a larger panel.
Leased premises
If your Derry 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.
Condensate
Most cassettes include a pump. The discharge still needs a route to a drain, which we design at survey.
Working hours
Most Derry businesses prefer noisy work outside trading hours. Early starts, evenings and weekends can be arranged and are priced up front.
Premises we work in around Derry
- Retail and shops: comfortable shop floors, stockrooms and entrances, even with the door open.
- Restaurants and cafés: dining rooms that stay comfortable next to a hot kitchen and a busy service.
- Gyms and leisure: high-capacity cooling and fresh air for gym floors, studios and changing rooms.
- Healthcare and dental: clean, quiet cooling for surgeries, clinics, dental practices and care settings.
Two rules matter for most businesses in Northern Ireland: EU F-gas rules that apply in Northern Ireland (leak checks from 5 tonnes CO2e) and the periodic energy inspection for more than 12 kW of air conditioning.
Your questions answered
How much does a ceiling cassette cost in Derry?
Guide prices in Derry run from about £1,995 to £4,550 per cassette, plus VAT. A typical job (shop or restaurant with 2–3 cassettes) costs £4,550–£12,395 plus VAT. We fix the price in writing after a free survey.
Do you also cover Strabane, Limavady and Coleraine?
Yes. Alongside Derry, we also cover Strabane, Limavady and Coleraine. Each has its own page with local guide prices.
Which postcodes do you cover in Derry?
All of them, including BT47. Give us your postcode when you enquire and we will confirm the visit details.
Can a cassette bring in fresh air?
Many cassettes have a knock-out for a fresh-air duct, so ventilation air can be connected. The ventilation system still needs designing separately.
How often should cassettes be cleaned?
Filters should be cleaned every few months in busy premises, with a full service and coil clean at least once a year.
Need ceiling cassette air conditioning in Derry?
Free survey and fixed written quote. We reply with a guide price or to book the survey.