Infinity Energy Services designs, installs and maintains home air conditioning across Hampshire, Dorset, Wiltshire, Berkshire, Surrey and West Sussex. Air conditioning installation typically takes a day for a single wall-mounted system – one that cools your room in summer and heats it efficiently in winter – with prices from £1,500 fully installed.
- Installing low-carbon technology since 2011
- Best Regional Installer – Energy Efficiency Awards 2023, 2024 and 2026
- Free home surveys and fixed written quotes
- F-Gas certified installation engineers
- £10 million employers’ liability and £5 million public liability insurance
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Why more UK homes are getting air conditioning
British summers have changed. The UK passed 40 °C for the first time in July 2022, and heatwaves that once arrived every few years now turn up most summers. Bedrooms under insulated lofts, south-facing home offices and glazed extensions can hold uncomfortable heat for days at a time – and fans only move warm air around.
A fixed air conditioning system does something a fan cannot: it removes heat from the room. Choose your preferred temperature on a sticky August night and the system regulates the room towards that setting, helping to maintain a consistently comfortable environment while filtering the air and reducing humidity.
The part many people miss is heating. Almost every wall-mounted system we install is an air-to-air heat pump. Run in reverse in winter, it delivers roughly three to four units of heat for every unit of electricity it uses, which makes it a very efficient way to warm the rooms you use most – and a natural companion to our air source heat pump installations.
One company, from survey to aftercare
When you book an air conditioning installation with Infinity Energy Services, we look after the whole job: survey, design, quotation, installation and aftercare. The hands-on installation is carried out by experienced, F-Gas certified air conditioning engineers working with us, and you deal with one company and one point of contact from first phone call to final handover.
We have been installing low-carbon heating and energy technology across the south of England since 2011, and air conditioning sits naturally alongside our heat pump, solar and battery work: the same refrigerant principles, the same care over siting and pipework, and the same aftercare.
Air Conditioning Calculator
Cool in summer, heat for less in winter – what would it cost?
Air-to-air heat pumps are the wall-mounted units most people know as air conditioning – run in reverse, they heat. See honest running costs and indicative installation prices for your home.
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A system for every room
Most homes don’t need whole-house air conditioning. They need the right rooms sorted: the bedroom that’s unbearable in July, the home office that catches the afternoon sun, the garden room that swings from freezing to baking.
Single split systems
A single split pairs one discreet wall-mounted indoor unit with an outdoor condenser. It’s the right choice for a single room, installation is usually completed in a day, and modern indoor units run near-silently on their low setting.
Multi-split systems
A multi-split runs two or more indoor units – typically up to five – from a single outdoor condenser, which suits a couple of bedrooms and a home office without a row of boxes outside. Each room keeps its own controls and its own temperature.
Not sure which fits? That’s what the free survey is for. We size the system to the room, check where the pipework can run and recommend the most cost-effective set-up.
Air conditioning brands we install
We fit systems from the manufacturers most widely installed in UK homes. Brands with proven reliability, quiet indoor units, efficient inverter compressors and parts availability that will still be there in ten years.
Every brand we fit uses inverter technology: instead of switching on and off like older systems, the compressor speeds up and slows down to match what the room actually needs. That means steadier temperatures, less noise and lower running costs, because the unit spends most of its life ticking over rather than working flat out.
Current ranges also run on R32 refrigerant, which has around a third of the global warming potential of the older R410A it replaces – a meaningful improvement for technology whose whole point is making homes more comfortable without driving up emissions.
What does home air conditioning cost?
Price depends on the room, the pipe run and the unit you choose. But we can send you guideline numbers before anyone visits your home. Here are approximate prices:
What can affect the price? Longer pipe runs between the indoor and outdoor units, awkward condenser positions that need access equipment, any upgrade to your electrical supply, and the brand and capacity you choose. Your written quote is fixed after the survey – no installation-day surprises.
Running costs are lower than most people expect. A typical bedroom system draws well under a kilowatt while cooling, which works out at roughly 20-30p an hour at mid-2026 electricity prices. In winter, the same unit heats at an efficiency of roughly 300-400%. Well beyond any plug-in electric heater.
0% VAT, a £2,500 grant – and who actually qualifies
Fixed air conditioning systems that both heat and cool are treated as air source heat pumps for VAT purposes, so qualifying supply-and-install work in Great Britain currently attracts 0% VAT rather than 20%. The relief runs until 31 March 2027. Full details are in HMRC’s energy-saving materials guidance.
There is a government grant in this area, but it helps fewer homes than the headlines suggest. Since 28 April 2026, the Boiler Upgrade Scheme has offered £2,500 towards an air-to-air heat pump in England and Wales – but only where the system completely replaces the home’s existing fossil fuel heating and is fitted as an MCS-certified installation.
Adding cooling and heating to a room or two alongside your boiler – which is what most home air conditioning projects are, including the systems we install – falls outside the scheme, so you will not see that grant promised in our quotes.
If replacing your whole heating system is the real goal, the better-supported route is usually an air source heat pump feeding radiators or underfloor heating. Our MCS-certified heat pump team installs these every week, and they attract the larger £7,500 Boiler Upgrade Scheme grant (or potentially £9,000 if you are on oil or LPG) – see our air source heat pump page for how that works.
How your installation works
Noise, planning, and your neighbours
Two questions come up at almost every survey.
First, noise. The quietest current bedroom units run below 19 dB(A) on their lowest fan setting – the Toshiba Haori, for example – and most small wall-mounted units sit in the low 20s.
Push any unit harder and it gets louder, and outdoor condensers are louder again, typically in the 40s or 50s of dB(A) depending on model and mode.
That is why siting matters: we position condensers away from bedroom windows and boundary fences wherever we can, for your sake and your neighbours’.
Second, planning permission. Because the systems we install both heat and cool, they count as air source heat pumps for planning purposes, and in England they can often be installed under permitted development rights – on houses and even blocks of flats – provided strict conditions are met.
Those conditions include limits on the unit’s size and position, compliance with MCS planning standards on noise, and only the first heat pump on most properties; cooling-only systems get no such rights, conservation areas and listed buildings need extra care, and leaseholders may need their freeholder’s written consent even when no planning application is required.
We check all of this at the survey stage, before you spend a penny, and you can read the full rules on the Planning Portal.
Aftercare, servicing, and warranties
A well-maintained system should last 10-15 years, and the routine is simple.
Keep the filters clean – many units remind you, and we show you how at handover – and book a professional service once a year to check refrigerant pressures, clean the coils and keep the system at full efficiency.
Where we install air conditioning
We install home air conditioning across Hampshire, Dorset, Wiltshire, Berkshire, Surrey and West Sussex – the same areas we have served with renewable technologies since 2011.
Home air conditioning FAQs
For a single wall-mounted system, prices start from £1,500 fully installed, rising with unit size, brand and pipework. Multi-room systems cost more. National cost guides quote broadly similar figures, but a fixed quote after a survey is the only number worth planning around.
If there are rooms you avoid or can’t sleep in every summer, yes – and because a fixed system also heats efficiently in winter, it earns its keep all year rather than sitting idle for ten months.
Rarely. Since 28 April 2026 the Boiler Upgrade Scheme has offered £2,500 towards an air-to-air heat pump in England and Wales, but only where the system completely replaces your existing fossil fuel heating as an MCS-certified installation – not where air conditioning is added to individual rooms alongside your boiler, which is what most installations (including ours) are. For typical home air conditioning, the 0% VAT relief is the government support that actually applies.
Roughly 20-30p an hour while cooling a typical bedroom at mid-2026 electricity prices. Most households only run it hard for a few weeks a year, so the summer total is usually modest.
Yes. The systems we install are air-to-air heat pumps. In heating mode they deliver roughly 3-4 kWh of heat for every kWh of electricity used – far better than any plug-in heater.
A single-room system is usually installed, commissioned and tested in a day. Multi-room systems take longer, depending on the number of units and the pipe runs.
Typically 10-15 years. Regular servicing pushes you towards the top of that range.
Once a year for a domestic system, with filters cleaned more often – your indoor unit’s manual, and our handover, show you how.
No. Refrigerant work is legally restricted to F-Gas certified engineers, and DIY kits usually void the manufacturer’s warranty as well as risking refrigerant leaks.
Quieter than most people expect. Good wall-mounted units run at around 19-26 dB(A) on their low settings, and sensible condenser siting keeps outdoor noise away from windows and neighbours.
Book your free air conditioning survey
Tell us which rooms need sorting and we’ll do the rest – a free survey, a fixed written quote and an installation managed by Infinity from start to finish. Call 0800 909 8882 or use the form below.
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