Split & Multi-Split Systems
Simple, Flexible, Cost-Effective
A single split system is the most straightforward way to air condition a room. Multi-split systems extend that to multiple rooms from a single outdoor unit — ideal when external wall space or planning constraints limit how many outdoor units you can install.
One Outdoor Unit.
Up to Five Indoor Zones.
A split system has one indoor unit connected to one outdoor unit. A multi-split system takes this further, connecting two to five indoor units to a single outdoor unit via shared refrigerant pipework — all independently controlled.
- Single split systems — the simplest and most affordable option
- 2–5 zone multi-split — multiple rooms, one outdoor unit
- Wall-mounted, ceiling cassette and floor-standing indoor options
- Heat pump mode standard — cools in summer, heats in winter
- WiFi controls and smart thermostat compatibility on all modern systems
- Most installations completed within one working day
- 5-year manufacturer warranty on selected equipment
Find the Right Setup
for Your Space
The right configuration depends on how many rooms you need to control and how much external wall space is available for outdoor units. We'll advise you on the most practical and cost-effective solution for your specific situation.
Single Split (1:1)
One indoor, one outdoor unit. The most affordable entry point — perfect for a single bedroom, office or living room. Most installations done in 3–4 hours.
2-Zone Multi-Split
Two indoor units, one outdoor unit. A popular choice for two-bedroom flats or combined living room / home office setups where only one outdoor unit location is available.
3–5 Zone Multi-Split
Up to five indoor units from a single outdoor plant. Covers an entire floor of a house or small commercial premises from one outdoor unit position.
Wall-Mounted Units
The most popular indoor unit type — available in a wide range of capacities, discreet and easily controlled by handheld remote or smartphone app.
Ceiling Cassette Units
Flush-fit in a standard ceiling tile, blowing air in four directions. Ideal for retail, offices and rooms where wall space is limited or aesthetics are a priority.
Heat Pump Mode
Every modern split unit can heat as well as cool. Running in heat pump mode is typically 3× more efficient than a direct electric heater at the same output.
Every Brand, Every Size,
Every Budget
We supply and install split systems from the full range of leading brands, so you're not locked into one manufacturer. We'll recommend the right unit for your budget and your building — not the one with the highest margin for us.
All Major Brands
Daikin, Mitsubishi, Samsung, Fujitsu, LG and Panasonic — we're brand agnostic
Quick Installation
Single split installs typically completed in 3–4 hours with minimal disruption to your day
5-Year Warranty
Selected systems come with up to 5-year manufacturer warranty — protected by our certified installation
Transparent Pricing
Supply-and-fit prices agreed upfront — no surprise extras when the engineer arrives
Related Services
Ventilation Systems
MVHR, heat recovery and extract ventilation for homes and businesses.
Refrigeration & Cold Rooms
Cold room design, commercial refrigeration and emergency breakdown response.
HVAC Design & Consultancy
Load calculations, system specification and project management for HVAC projects.
Electrical & Plumbing
Power supplies, pipework and electrical services supporting HVAC installations.
Compliance & Maintenance
PPM contracts, F-Gas compliance, TM44 surveys and reactive maintenance.
The single split system — one indoor unit connected to one outdoor unit — is the simplest and most cost-effective AC solution available. It's the right choice for anyone who wants to condition a single room reliably and affordably.
- Capacity range: 1.5kW (small bedroom) to 7kW (large open-plan room) — we select the correct size for your specific room
- Most standard domestic installations are completed in 3–4 hours with no significant building work
- The outdoor unit requires a suitable external wall, flat roof or ground position with good airflow clearance
- Electrical supply: a 16A or 20A dedicated circuit is required — we work alongside our in-house electricians to provide this
- Brands we regularly install: Daikin, Mitsubishi Electric, Fujitsu, Panasonic, Samsung — all carrying at least 5-year warranty when installed by an approved contractor
A 2-zone multi-split is the ideal solution where two rooms need conditioning but only one external wall location is practical for an outdoor unit — common in flats and terraced houses.
- Total indoor unit capacity must not exceed the outdoor unit's rated capacity — we design within manufacturer limits
- Both indoor units can run simultaneously or independently — no requirement to run both at once
- Pipe runs: each indoor unit connects back to the outdoor unit via separate refrigerant pipes, so pipe routing for two zones must be planned carefully
- Slightly higher capital cost than two separate single splits, but saves the space, visual impact and potential planning issue of a second outdoor unit
- If both rooms are on the same external wall, separate single splits may be more economical — we'll advise on the best option for your specific situation
3–5 zone multi-split systems allow whole-home or whole-floor climate control from a single outdoor unit. They're particularly popular in flats, cottages and heritage buildings where multiple outdoor units would be impractical or refused planning permission.
- Available in 3-zone (e.g. Daikin 3MXM, Mitsubishi MXZ-3F), 4-zone and 5-zone configurations
- Maximum pipe run from outdoor unit to farthest indoor unit is typically 25m — this limits suitability for large houses
- All indoor units can operate simultaneously; the outdoor unit modulates to match the combined demand
- Efficiency is slightly lower than separate single splits at full load, but for typical use patterns the difference is small
- Installation is a full-day job for a 5-zone system — more pipe routes to plan, and the outdoor unit connection is more complex than a single split
Wall-mounted indoor units are by far the most popular choice for both domestic and light commercial applications — they combine reliable performance, quiet operation and wide availability of parts with a relatively modest price point.
- Available in every capacity from 1.5kW to 9kW, covering almost every application from a small bedroom to a large open-plan space
- Modern units are much slimmer and more discreet than older designs — front panels are typically 25–30cm deep
- Horizontal louvre position can be set manually or via auto-swing to distribute airflow evenly across the room
- Most models offer a 'turbo' mode for rapid cool-down and a 'quiet' mode that limits fan speed for overnight use
- Wi-Fi adapters are standard or available as an add-on for all major brands — enabling smartphone and voice control
Ceiling cassette units sit flush in a standard 600×600mm ceiling tile grid and distribute air in four directions simultaneously. They're the most discreet indoor unit option for commercial spaces and are increasingly popular in high-end residential projects.
- Requires a suspended ceiling with at least 350mm void depth above the ceiling tile for the unit body
- Four-way airflow gives much more even temperature distribution across a room than a wall-mounted unit
- Available in 1-way, 2-way and 4-way configurations — 1-way and 2-way suit corridors or rooms where air shouldn't be blown towards one wall
- Condensate pump is usually built-in, allowing installation where gravity drainage to an external wall isn't possible
- Capacities typically start at 3.5kW, making them suitable for small meeting rooms upwards — they're not practical for very small spaces
Every split system air conditioner can also operate as a heat pump — reversing the refrigerant cycle to move heat from outside air into the room, rather than the other way around. This isn't a separate technology; it's built into every inverter split system as standard.
- A COP of 3.0 is typical in mild winter conditions (7°C ambient): 3kW of heat output per 1kW of electricity input
- At 0°C ambient, COP typically drops to around 2.0–2.5 — still significantly more efficient than a direct electric heater
- Cold-climate models (Daikin Emura, Mitsubishi Hyper Heat) maintain rated heating output down to -15°C or -20°C ambient
- Heat pump mode is engaged by switching to 'Heat' on the remote or app — there's no additional installation or equipment required
- Pair with a timed schedule so it pre-heats your space before you wake up or arrive home, maximising the efficiency advantage