Air Conditioning Installation near you

Almost everything offered to British households is a refrigerant-based system with an indoor unit, an outdoor unit and pipework joining them. The differences are about how many rooms you want to cool and how much disruption the building will tolerate.

Because British homes overheat in a handful of weeks rather than a whole season, it is worth being clear about which rooms actually need mechanical cooling and why the heat is getting in. South and west facing glazing, loft conversions under an uninsulated roof, flats with single-aspect windows that cannot cross-ventilate and rooms full of computers all overheat for different reasons, and shading or ventilation fixes some of them for good.

In England, new residential buildings have to deal with this through the Building Regulations rather than by adding equipment later: Approved Document O sets out the overheating mitigation requirements of Part O for new residential buildings. Approved Document F covers ventilation for indoor air quality, with Volume 1 for dwellings, and it is worth remembering that an air conditioner recirculates and cools room air rather than supplying fresh air.

Air conditioning works by moving a fluorinated greenhouse gas around a sealed circuit, and in Great Britain that fluid is tightly regulated. GOV.UK is blunt about the qualifications: you must have your own qualifications to work on equipment containing F gas, even if you work for someone else, and it is against the law to work with F gas if you do not have the correct qualifications. For stationary refrigeration, air conditioning and heat pump equipment the certificates are graded, with a category 1 certificate covering all activities and a category 2 certificate allowing installation, maintenance, servicing and recovery on smaller systems, which is the band most domestic splits fall into.

The company matters as well as the engineer. GOV.UK states that your company, including sole traders, must be certified by an approved body to service stationary equipment containing F gas operated by others, and that the certification must be renewed every three years. A one-person firm is not exempt. Ask for both, and ask to see the certificate rather than a logo on a website.

The refrigerants themselves are changing because the GB rules phase down the supply of hydrofluorocarbons by global warming potential, which is why newer equipment is designed around lower-GWP refrigerants. That is worth knowing before you buy, because it affects how easy the system will be to service and recharge in ten years' time.

This is where domestic air conditioning in the UK differs most sharply from countries where a condenser on the wall is unremarkable. The permitted development right for air source heat pumps on domestic premises in England sits in Class G of Part 14 of the General Permitted Development Order, and on 29 May 2025 an amending Order inserted a condition that the heat pump is not solely used for the purpose of cooling. A cooling-only outdoor unit therefore cannot rely on that right, so assume you need to ask your local planning authority before anything is fixed to the wall.

Several other things push a job outside permitted development entirely, whatever the equipment does: listed buildings and scheduled monuments, conservation areas and World Heritage Sites where the unit would front a highway, and blocks of flats, which have tighter limits than houses. A leasehold flat usually needs the freeholder's consent as well, which is a separate matter from planning.

Scotland and Northern Ireland run their own systems. The Scottish Government's householder permitted development guidance describes a right for air source heat pumps on dwellings, and it says the pump must be used only for providing domestic heating or hot water, so cooling-only equipment is outside it there too. In Northern Ireland, the Department for Infrastructure extended permitted development to domestic heat pumps from 4 July 2023 subject to conditions, including being at least one metre from a neighbouring property boundary and meeting noise standards.

Noise is the practical objection neighbours raise, and it is easier to design out than to argue about later. Position, mounting, anti-vibration fixings, the distance to the nearest habitable window next door and whether the unit runs at night all belong in the survey conversation.

A good installer surveys before quoting. That means measuring the rooms, looking at glazing, orientation and insulation, working out the cooling load rather than guessing from floor area, agreeing where the indoor unit will sit so the airflow is not blowing straight at a bed, planning the pipe and condensate route, and finding a position for the outdoor unit that can be serviced and that will not annoy anyone.

On the day, expect core drilling through an external wall, pipework and cabling run in trunking or chased in, brackets fixed, the circuit connected, the system pressure tested and evacuated, then charged and commissioned with the readings recorded. In England, electrical work in a home falls under Part P of the Building Regulations, and installers registered with a competent person scheme can self-certify notifiable work instead of going to building control. GOV.UK lists schemes covering electrical work and mechanical ventilation and air conditioning, including BESCA, Blue Flame Certification, Certsure and NAPIT, and those schemes operate in England and Wales.

LokalMatch is how you reach the installers. You describe the job once, saying which rooms you want cooled, what kind of building it is and your postcode, and air conditioning firms covering your area contact you. Pros pay for the requests they receive. LokalMatch does not do the work, does not set prices and does not vet, rank or recommend anyone, so checking F gas certification and comparing written quotations is still yours to do.

There is no government grant for cooling. The Boiler Upgrade Scheme in England and Wales exists to replace fossil fuel heating systems, such as oil, gas, electric or LPG, with a heat pump or, in limited cases, a biomass boiler. Ofgem administers it on behalf of the Department for Energy Security and Net Zero, the scheme is installer-led so an MCS certified installer applies for and redeems the voucher, and eligibility rests on the property owner replacing an existing heating system rather than adding summer comfort.

Ofgem does list air-to-air heat pumps among the technologies supported in residential buildings, which is the closest the scheme comes to air conditioning equipment. The catch is that the system has to do the heating job: the installation replaces the existing fossil fuel or electric heating and is sized for the property, and a valid energy performance certificate is part of the eligibility. If you are buying a reversible system anyway, it is worth asking an MCS certified installer whether the heating side of the job could qualify before you commit.

Scotland is funded separately through Home Energy Scotland, and Northern Ireland has neither the Boiler Upgrade Scheme nor its old boiler replacement scheme, which GOV.UK records as closed. Check what is open locally before you plan around any of it.

Cleaning the indoor filters is the one job that is genuinely yours, and skipping it is the fastest way to lose cooling capacity and gain a smell. Keep the outdoor unit clear of leaves, fence panels and storage, and keep an eye on the condensate drain, which is the usual cause of water appearing indoors.

Everything inside the sealed refrigerant circuit belongs to a certified engineer. Operators of equipment also have record-keeping duties once a system holds F gas equivalent to five tonnes or more of carbon dioxide, covering the gas charged at installation, gas added during maintenance, the dates and results of leak checks and what was recovered, with records kept for five years. A single domestic split is usually well below that threshold, but larger multi-split and light commercial systems are not.

There is a separate duty for bigger systems. Under the Energy Performance of Buildings regime in England and Wales, air conditioning systems with an effective rated output of more than 12kW must be inspected by an accredited energy assessor at intervals of no more than five years, and that includes individual units below 12kW whose combined output is above it. Those certificates and reports can be looked up on the government's Find an Energy Certificate service.