Split and multi-split systems in Harrow
Split and multi-split air conditioning for businesses in Harrow — 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 Harrow?
Budget roughly £1,850–£3,795 per system ex VAT in Harrow. For a typical job — two-room multi-split — expect £4,395–£7,595 plus VAT. You get a fixed written quote after the free survey.
A split air conditioning system has an indoor unit and an outdoor unit joined by refrigerant pipework.
Where we work around Harrow
Premises in Harrow are often in mixed-use buildings with shared roofs and tight access, so outdoor unit positions are agreed early.
We work across Harrow's postcode districts, including HA2. We also work in nearby Wealdstone, Brent and Wembley. For split and multi-split air conditioning in Harrow, the survey looks at where the outdoor unit can go, how pipework will reach the indoor units and whether the electrical supply has capacity.
What you get
- Wall-mounted, floor-standing or under-ceiling indoor units
- Outdoor unit on wall brackets, a flat roof frame or ground mounts
- Pipework in neat trunking or concealed routes
- Condensate drainage
- Commissioning, remote or wired controls and F-gas records
Prices in Harrow
These guide prices are adjusted for London, where labour and access costs run about 28% above the UK guide.
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| Single split 2.5–3.5 kW | £1,850–£3,150 | £2,220–£3,780 | per system |
| Single split 5–7 kW | £2,500–£3,795 | £3,000–£4,554 | per system |
| Multi-split, 2 indoor units | £4,395–£7,595 | £5,274–£9,114 | per system |
| Multi-split, 3–4 indoor units | £6,350–£12,750 | £7,620–£15,300 | per system |
| Extra pipework beyond 5 m | £45–£85 | £54–£102 | per metre |
Ex VAT, supply and install with standard access.
How it works in Harrow
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. We keep work areas in Harrow screened and tidy at the end of each day.
Test and commission
Pressure test, evacuation, any extra refrigerant charge, then commissioning and handover.
What to think about in Harrow
Outdoor unit position
Outdoor units need air flow and access, and should be away from neighbours' windows to keep noise down.
Leased premises
If your Harrow 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.
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.
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.
Typical premises in Harrow
- Healthcare and dental: clean, quiet cooling for surgeries, clinics, dental practices and care settings.
- 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.
- 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).
FAQs for Harrow
How much does a split air conditioning system cost in Harrow?
Guide prices in Harrow run from about £1,850 to £3,795 per system, plus VAT. A typical job (two-room multi-split) costs £4,395–£7,595 plus VAT. We fix the price in writing after a free survey.
Do you also cover Wealdstone, Brent and Wembley?
Yes. Alongside Harrow, we also cover Wealdstone, Brent and Wembley. Each has its own page with local guide prices.
Which postcodes do you cover in Harrow?
All of them, including HA2. 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.
Does a small split need F-gas leak checks?
It depends on the refrigerant charge and type. Many small R32 splits fall below the 5 tonnes CO2 equivalent threshold for mandatory leak checks, but they still need installing and servicing by F-gas certified engineers.
Get a guide price for Harrow
Free survey and fixed written quote. We reply with a guide price or to book the survey.