Split and multi-split systems in Hertfordshire
From a single room to a whole floor: split and multi-split air conditioning in Hertfordshire, planned around your trading hours.
- 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 Hertfordshire?
Budget roughly £1,550–£3,195 per system ex VAT in Hertfordshire. For a typical job — two-room multi-split — expect £3,750–£6,450 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.
Our coverage in Hertfordshire
We cover all of Hertfordshire, including Watford, Hemel Hempstead, Stevenage, St Albans and Welwyn Garden City. Wherever your premises are, the survey, quote and installation follow the same steps.
Postcode districts we cover include AL1, AL8, EN7, HP4, SG6, SG13, WD6 and WD99. In Hertfordshire, 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.
What is included
- 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
- Pipework in neat trunking or concealed routes
- Commissioning, remote or wired controls and F-gas records
Local guide prices for Hertfordshire
These guide prices are adjusted for the East of England, where labour and access costs run about 8% above the UK guide.
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| Single split 2.5–3.5 kW | £1,550–£2,650 | £1,860–£3,180 | per system |
| Single split 5–7 kW | £2,095–£3,195 | £2,514–£3,834 | per system |
| Multi-split, 2 indoor units | £3,750–£6,450 | £4,500–£7,740 | per system |
| Multi-split, 3–4 indoor units | £5,350–£10,750 | £6,420–£12,900 | per system |
| Extra pipework beyond 5 m | £40–£70 | £48–£84 | per metre |
Ex VAT, supply and install with standard access.
The steps for a project in Hertfordshire
Survey
We size the unit to the room and agree indoor and outdoor positions and the pipe route. For sites in Hertfordshire we confirm access and parking beforehand.
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.
Test and commission
Pressure test, evacuation, any extra refrigerant charge, then commissioning and handover.
What to think about in Hertfordshire
Pipe routes
Shorter, simpler pipe routes are cheaper and more reliable. We plan routes before quoting.
Neighbours and noise
Outdoor units near flats — common above shops — need careful siting so noise at neighbours' windows stays low. We choose positions and quieter units with that in mind.
One outdoor unit, many rooms
Multi-splits save wall space but share a single compressor. For server rooms or critical spaces we recommend dedicated systems.
Working hours
Most Hertfordshire businesses prefer noisy work outside trading hours. Early starts, evenings and weekends can be arranged and are priced up front.
Premises we work in around Hertfordshire
- Warehouses and industrial: cooling for offices, mezzanines, control rooms and temperature-sensitive areas.
- 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.
In England, systems holding 5 tonnes CO2 equivalent of refrigerant or more fall under GB F-gas rules, with regular leak checks and records; buildings with more than 12 kW of air conditioning in total also need a periodic energy inspection.
Common questions from businesses in Hertfordshire
How much does a split air conditioning system cost in Hertfordshire?
Guide prices in Hertfordshire run from about £1,550 to £3,195 per system, plus VAT. A typical job (two-room multi-split) costs £3,750–£6,450 plus VAT. We fix the price in writing after a free survey.
Do you also cover Buckinghamshire, Bedfordshire and London?
Yes. Alongside Hertfordshire, we also cover Buckinghamshire, Bedfordshire and London. Each has its own page with local guide prices.
How much does a split air conditioning system cost for a business?
A single wall-mounted split typically costs £1,450–£2,950 plus VAT installed. Multi-splits with two to four indoor units are typically £3,450–£9,950 plus VAT.
Can a split system heat in winter?
Yes. Modern split systems are heat pumps and can heat efficiently down to well below freezing.
Talk to us about your premises in Hertfordshire
Free survey and fixed written quote. We reply with a guide price or to book the survey.