Split and multi-split systems in Horsham
Split and multi-split air conditioning for businesses in Horsham — 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 a split air conditioning system cost in Horsham?
In Horsham, guide prices run from about £1,650 to £3,395 per system, plus VAT. A typical job (two-room multi-split) usually comes to £3,950–£6,850 plus VAT. Your exact price is fixed in writing once we have surveyed.
A split air conditioning system has an indoor unit and an outdoor unit joined by refrigerant pipework.
Our coverage in Horsham
Businesses in Horsham range from independent shops and restaurants to offices, clinics and warehouses. Crawley is about 12 km away.
We work across Horsham's postcode districts, including RH12 and WR6. Neighbouring towns we cover include Crawley, Horley and Haywards Heath. Buildings across West Sussex 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 and unit sizing
- Wall-mounted, floor-standing or under-ceiling indoor units
- Outdoor unit on wall brackets, a flat roof frame or ground mounts
- Condensate drainage
- Commissioning, remote or wired controls and F-gas records
Prices in Horsham
Guide prices for Horsham, set for the South East. Your fixed price comes in writing.
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| Single split 2.5–3.5 kW | £1,650–£2,795 | £1,980–£3,354 | per system |
| Single split 5–7 kW | £2,250–£3,395 | £2,700–£4,074 | per system |
| Multi-split, 2 indoor units | £3,950–£6,850 | £4,740–£8,220 | per system |
| Multi-split, 3–4 indoor units | £5,695–£11,450 | £6,834–£13,740 | per system |
| Extra pipework beyond 5 m | £40–£75 | £48–£90 | per metre |
Ex VAT, supply and install with standard access.
How a job in Horsham works
Survey
We size the unit to the room and agree indoor and outdoor positions and the pipe route.
Mount the units
Indoor unit on a mounting plate, outdoor unit on brackets or a frame with anti-vibration mounts.
Pipe and wire
Pipework, interconnecting cable and condensate are run and made off neatly. In Horsham we agree timings around your opening hours.
Test and commission
Pressure test, evacuation, any extra refrigerant charge, then commissioning and handover.
Before you book in Horsham
Refrigerant rules
Since 1 January 2025, new single split systems holding under 3 kg of refrigerant in Great Britain cannot use refrigerant with a GWP of 750 or more — in practice, R32 or lower.
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.
Outdoor unit position
Outdoor units need air flow and access, and should be away from neighbours' windows to keep noise down.
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.
Types of premises we cover in Horsham
- Warehouses and industrial: cooling for offices, mezzanines, control rooms and temperature-sensitive areas.
- Salons and spas: comfortable salons and treatment rooms despite dryers, lamps and steam.
- Pubs and bars: cooling for busy bars, function rooms and cellars, sited with neighbours in mind.
- Healthcare and dental: clean, quiet cooling for surgeries, clinics, dental practices and care settings.
Two rules matter for most businesses in England: GB F-gas rules (leak checks from 5 tonnes CO2e) and the periodic energy inspection for more than 12 kW of air conditioning.
Questions about split systems in Horsham
How much does a split air conditioning system cost in Horsham?
Guide prices in Horsham run from about £1,650 to £3,395 per system, plus VAT. A typical job (two-room multi-split) costs £3,950–£6,850 plus VAT. We fix the price in writing after a free survey.
Do you also cover Crawley, Horley and Haywards Heath?
Yes. Alongside Horsham, we also cover Crawley, Horley and Haywards Heath. Each has its own page with local guide prices.
Which postcodes do you cover in Horsham?
All of them, including RH12 and WR6. Give us your postcode when you enquire and we will confirm the visit details.
Single split or multi-split?
Separate singles are more resilient and can be cheaper for two rooms; a multi-split saves outdoor space. We price both where it is close.
Can a split system heat in winter?
Yes. Modern split systems are heat pumps and can heat efficiently down to well below freezing.
Get a guide price for Horsham
Free survey and fixed written quote. We reply with a guide price or to book the survey.