Air conditioning replacement and upgrades in Farnham
Air conditioning replacement for businesses in Farnham — surveyed, designed and priced in writing before any work starts.
- 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 it cost to replace air conditioning in Farnham?
Our guide range in Farnham is £1,895–£5,095 per indoor unit before VAT; a typical job (replacing a 3–4 unit system, re-using sound pipework) is £6,850–£16,695 plus VAT. The fixed price follows a free survey.
Air conditioning replacement is removing an old system — often one using R22 or R410A refrigerant — and installing new, more efficient equipment, re-using pipework where it is safe and compatible.
Where we work around Farnham
In Farnham, typical premises are high-street shops, offices above them, surgeries, salons and local industrial units. Woking is about 20 km away.
We work across Farnham's postcode districts, including CM23, DT11, GU9, HG5 and IP17. Nearby, we also cover Aldershot (about 5 km), Fleet (about 8 km) and Farnborough (about 9 km). In Farnham we work with offices, shops and hospitality premises, from a single room to a whole floor; each job starts with a heat load check rather than a guess from the floor area.
What the job covers
- Condition survey of the existing system
- Pipework re-use assessment, flushing where suitable
- Refrigerant recovery with waste transfer documentation
- Installation of new efficient units
- Commissioning and new F-gas records
Local guide prices for Farnham
Prices below include our regional adjustment for the South East (15% above the UK guide).
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| Like-for-like split replacement | £1,895–£3,950 | £2,274–£4,740 | per system |
| Cassette replacement | £2,450–£5,095 | £2,940–£6,114 | per unit |
| Refrigerant recovery and disposal | £225–£685 | £270–£822 | per system |
| Pipework flush and test (re-use) | £225–£685 | £270–£822 | per circuit |
Ex VAT, supply and install.
The steps for a project in Farnham
Survey
We record what is installed, its condition and refrigerant, and what can be re-used.
Plan the swap
Removal and installation are scheduled to keep downtime short.
Recover and remove
Refrigerant is recovered into certified cylinders and the old units removed. In Farnham we agree timings around your opening hours.
Install and commission
New units are fitted, tested and commissioned with fresh records.
Local points to consider
Disposal
Old refrigerant must be recovered by certified engineers and the units disposed of as waste electrical equipment.
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.
Downtime
We schedule the swap to keep the space usable, often over a weekend.
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.
Types of premises we cover in Farnham
- Warehouses and industrial: cooling for offices, mezzanines, control rooms and temperature-sensitive areas.
- Healthcare and dental: clean, quiet cooling for surgeries, clinics, dental practices and care settings.
- Schools and education: classroom cooling, ventilation and IT room cooling, installed in the holidays.
- Restaurants and cafés: dining rooms that stay comfortable next to a hot kitchen and a busy service.
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 it cost to replace air conditioning in Farnham?
Guide prices in Farnham run from about £1,895 to £5,095 per indoor unit, plus VAT. A typical job (replacing a 3–4 unit system, re-using sound pipework) costs £6,850–£16,695 plus VAT. We fix the price in writing after a free survey.
Do you also cover Aldershot, Fleet and Farnborough?
Yes. Alongside Farnham, we also cover Aldershot, Fleet and Farnborough. Each has its own page with local guide prices.
Which postcodes do you cover in Farnham?
All of them, including CM23, DT11, GU9 and HG5. Give us your postcode when you enquire and we will confirm the visit details.
Should we replace R410A systems now?
Not necessarily. If an R410A system is working well and maintained, keep it. Plan replacement when it becomes unreliable or expensive to run.
Will a new system be cheaper to run?
Usually. Modern inverter systems are considerably more efficient than equipment from 15–20 years ago, though savings depend on use.
Get a guide price for Farnham
Free survey and fixed written quote. We reply with a guide price or to book the survey.