Ceiling cassette air conditioning in County Londonderry
Cooling and heating for offices, shops and hospitality venues in County Londonderry, with a free site survey and a fixed written quote.
- 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 County Londonderry?
Our guide range in County Londonderry is £1,995–£4,550 per cassette before VAT; a typical job (shop or restaurant with 2–3 cassettes) is £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.
Covering County Londonderry and nearby
We cover all of County Londonderry, including Derry, Coleraine, Limavady and Magherafelt. Wherever your premises are, the survey, quote and installation follow the same steps.
Postcode districts we cover include BT28, BT45, BT46, BT47, BT48, BT49, BT51 and BT52. In County Londonderry, outdoor unit positions are often the deciding factor: a rear flat roof or yard is usually straightforward, while a front elevation may need landlord or planning consent first.
Included as standard
- Survey of the ceiling void depth and grid
- 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
Local guide prices for County Londonderry
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 we work in County Londonderry
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 County Londonderry 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.
What to think about in County Londonderry
Cleaning access
Filters need cleaning regularly, so cassettes should be reachable with a step ladder.
Leased premises
If your County Londonderry 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.
Access and parking
Town-centre jobs in County Londonderry 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 County Londonderry
- Salons and spas: comfortable salons and treatment rooms despite dryers, lamps and steam.
- Healthcare and dental: clean, quiet cooling for surgeries, clinics, dental practices and care settings.
- Offices: zoned cooling and heating for open-plan floors, meeting rooms and comms rooms.
- Restaurants and cafés: dining rooms that stay comfortable next to a hot kitchen and a busy service.
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.
FAQs for County Londonderry
How much does a ceiling cassette cost in County Londonderry?
Guide prices in County Londonderry 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 County Tyrone, County Antrim and County Armagh?
Yes. Alongside County Londonderry, we also cover County Tyrone, County Antrim and County Armagh. Each has its own page with local guide prices.
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.
Do I need a suspended ceiling for a cassette?
Yes, or a ceiling void with access. In solid ceilings a wall-mounted or ducted unit is usually the better option.
Get a guide price for County Londonderry
Free survey and fixed written quote. We reply with a guide price or to book the survey.