Ceiling cassette air conditioning in Dereham
Ceiling cassette air conditioning in Dereham, sized to the real heat load of your premises rather than guessed from the floor area.
- 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 Dereham?
Our guide range in Dereham is £2,295–£5,350 per cassette before VAT; a typical job (shop or restaurant with 2–3 cassettes) is £5,350–£14,595 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.
Where we work around Dereham
In a town like Dereham, a single wall unit for a shop or a cassette for a surgery makes a real difference in summer. Norwich is about 25 km away.
We work across Dereham's postcode districts, including NR19. We also work in nearby Norwich, Thetford and King's Lynn. Buildings across Norfolk range from converted period offices to modern units with deep ceiling voids, so we measure each site rather than relying on a standard package.
What the job covers
- 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 Dereham
Prices below include our regional adjustment for the East of England (8% above the UK guide).
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| Compact 600 mm cassette (up to about 5 kW) | £2,295–£4,250 | £2,754–£5,100 | per unit |
| Full-size four-way cassette (7–14 kW) | £3,195–£5,350 | £3,834–£6,420 | per unit |
| Ceiling tile and grid alterations | £105–£425 | £126–£510 | per unit |
| Fresh-air spigot connection | £210–£645 | £252–£774 | per unit |
Ex VAT, supply and install on a single or multi-split system.
The steps for a project in Dereham
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 Dereham 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.
Points to plan for in Dereham
Condensate
Most cassettes include a pump. The discharge still needs a route to a drain, which we design at survey.
Roof and height work
Flat roofs, high walls and atriums need the right access equipment and edge protection. We plan towers, MEWPs or scaffold before the job, not on the day.
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 Dereham 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.
Typical premises in Dereham
- Retail and shops: comfortable shop floors, stockrooms and entrances, even with the door open.
- Pubs and bars: cooling for busy bars, function rooms and cellars, sited with neighbours in mind.
- Offices: zoned cooling and heating for open-plan floors, meeting rooms and comms rooms.
- Gyms and leisure: high-capacity cooling and fresh air for gym floors, studios and changing rooms.
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).
Your questions answered
How much does a ceiling cassette cost in Dereham?
Guide prices in Dereham run from about £2,295 to £5,350 per cassette, plus VAT. A typical job (shop or restaurant with 2–3 cassettes) costs £5,350–£14,595 plus VAT. We fix the price in writing after a free survey.
Do you also cover Norwich, Thetford and King's Lynn?
Yes. Alongside Dereham, we also cover Norwich, Thetford and King's Lynn. Each has its own page with local guide prices.
Which postcodes do you cover in Dereham?
All of them, including NR19. Give us your postcode when you enquire and we will confirm the visit details.
What size cassette do I need?
It depends on the heat load. As a guide, a compact cassette suits a room of up to about 40–50 m² of office space; larger spaces use bigger units or several cassettes.
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.
Get a guide price for Dereham
Free survey and fixed written quote. We reply with a guide price or to book the survey.