Air conditioning for homes and businesses across the South West

Wall-mounted air conditioning used to be the preserve of offices and hotel rooms. It's become a practical choice for homes across Dorset, Devon and Somerset, particularly as summers have grown less predictable. A properly sized and installed unit makes a real difference in south-facing bedrooms, conservatories, home offices, and rooms that become uncomfortable by mid-afternoon in July.

We install split air conditioning systems for single rooms and multi-split systems where one outdoor unit serves several indoor units across the house. Survey and quote are free. F-Gas registered, so all refrigerant work is handled legally and to the required standard.

Cool in summer. Warm in winter.

This is the part that surprises a lot of people. Modern air conditioning units are reverse-cycle systems: they don't just cool a room, they move heat. In summer, they extract heat from inside and push it outside. In winter, they reverse the process, extracting heat from outside air and moving it in, even when temperatures are well below freezing.

The efficiency of this process (measured as COP, coefficient of performance) typically gives you 3 to 4 units of heat for every unit of electricity used. That's meaningfully cheaper to run than electric storage heaters or electric panel heaters for the same output, and once the unit is installed, the heating function comes at no extra cost. For holiday lets, that can also simplify the guest experience considerably.

It's not a replacement for a central heating system in most homes. But as a supplement for specific rooms, or as the primary heating and cooling solution for a converted garage or home office, it works well.

Wall-mounted air conditioning unit showing cool airflow

System types we install

Wall-mounted split systems

The most common choice for a single room. One outdoor condenser unit, one indoor wall-mounted unit. Quiet in operation, controllable by remote or smartphone app, and relatively unobtrusive once installed. The indoor unit is usually fitted high on an external wall; the outdoor unit goes on a bracket on the external wall, flat roof, or ground level depending on access. We work out the best position during the survey.

Multi-split systems

One outdoor unit connected to two, three, or four indoor units in different rooms. Cheaper than running separate single systems for each room, and only one penetration through the external wall for refrigerant lines. Works well for houses where you want control in several rooms without separate outdoor units on every elevation.

Ceiling cassette systems

Suited to larger open-plan rooms, commercial spaces, or rooms with a ceiling void where a wall unit wouldn't distribute air evenly across the space. Less common in domestic settings but sometimes the right answer for a large kitchen-diner or an office extension.

What's included in the price

  • Free home survey and quote
  • Supply of unit from leading manufacturers
  • Full installation: indoor unit, outdoor unit, refrigerant pipework and drainage
  • System commissioning and testing
  • Full handover so you know how to use the controls
  • Clean and tidy work, as standard

We're F-Gas registered, which is the legal requirement for handling refrigerants. It isn't something all installers hold, so it's worth checking before booking anyone.

What it's right for

Air conditioning works best where you need reliable temperature control in a specific space, rather than across an entire house.

  • Bedrooms and living rooms: overnight comfort in summer is the most common request
  • Home offices: most people don't notice how warm a south-facing office gets until it affects their ability to concentrate
  • Conservatories: the classic problem space, often unusable for months of the year without some form of climate control
  • Garages and workshops: particularly useful where tools or materials need temperature regulation, not just comfort
  • Home gyms: easier to train in a space that doesn't become a sauna by August
  • Holiday lets and rental properties: summer comfort ratings affect bookings directly; winter heating flexibility can reduce energy costs
  • House renovations and refurbishments: a good time to plan the install before rooms are finished

Pricing

Air conditioning installation starts from £1,750 for a single-room wall-mounted system, including supply and installation. Multi-room systems with multiple indoor units vary depending on the number of units, cable and pipe runs, and any access complications. We quote in person after the survey so the price you get reflects the actual job, not a generic estimate.

We don't charge for the survey or the quote. If you decide not to go ahead, there's no obligation.

Areas we cover

Air conditioning installations across Dorchester, Bridport, Beaminster, Weymouth, Sherborne, Lyme Regis, Axminster, Honiton, Seaton, Sidmouth, Exeter, Chard, Crewkerne, Yeovil, Ilminster and Taunton, plus surrounding villages across Dorset, Devon and Somerset.

Frequently asked questions

How much does air conditioning cost to install in Dorset?
A single-room wall-mounted unit starts from £1,750 for supply and installation. Multi-room systems with multiple indoor units typically range from £3,000 to £6,000 or more depending on the number of rooms and the complexity of the install. We survey and quote in person before any work starts.
Can air conditioning heat my home in winter?
Yes. Modern units are reverse-cycle systems. They extract heat from outside air and move it inside, even when temperatures are low. The efficiency typically means 3 to 4 units of heat for every unit of electricity used, which compares well with direct electric heating options for the same output.
Do I need planning permission for air conditioning?
Most domestic installations fall within permitted development rights and don't need planning permission. Listed buildings and properties in conservation areas may have restrictions. We'll check this as part of the survey so there are no surprises before installation begins.
How long does installation take?
A single-room wall-mounted unit can usually be fitted in a day. Multi-room systems with several indoor units typically take 2 to 3 days. You'll have a clear schedule from the quote stage so you know what to expect.
What is F-Gas certification?
F-Gas regulations require engineers working with refrigerants in air conditioning and heat pump systems to hold recognised certification. OWB is F-Gas registered, so all refrigerant handling is done legally and to the required standard. It's worth asking any installer to confirm they hold this before booking.
How noisy are air conditioning units?
Modern units are genuinely quiet. Indoor units on standard operation typically run at around 20 to 30 decibels, which is quieter than a normal conversation. Outdoor units are louder but still unobtrusive. We position the outdoor unit to minimise impact on neighbours and outdoor living areas where possible.

Air conditioning quote? We'll survey it for free.

Covering Dorset, Devon and Somerset. F-Gas registered. Prices from £1,750.

Call 07984 856177