Climate Shield engineer charging an air conditioning system on a north London rooftop

Air conditioning for the London heat your house was never built for

Fitted in a day. Fixed written price before we start. The survey is free.

Book a free surveyTakes 60 seconds

We come out, measure, and send a written price. No charge, no obligation, and no deposit before you have seen the number.

Name, number and postcode. We call back the same working day.

When would suit you?

Brands we work with

DaikinMitsubishi ElectricSamsungBoschVaillant

Price it yourself, in about a minute

Choose what you actually want and the range moves with it.

£2,000 to £3,350

Supplied, fitted, commissioned and certificated. Includes VAT.

What is in that

An estimate from published UK market ranges, not a quotation. The fixed price comes after a free survey and it does not change unless the job does.

Rooms after the first share one outdoor unit, so they cost less each.

The part you live with. A cassette disappears into the ceiling and costs more.

Output drives the unit price. Getting this wrong is what makes a room clammy.

This changes access, and in a flat it changes who has to agree to it.

Ground level on slabs is cheapest and easiest to service in ten years.

The first 8 metres are included. After that it is 40 pounds a metre.

Not a London surcharge. It is travel, the congestion charge and parking.

Tick what applies. If you are not sure, leave it and we will confirm on the survey.

Ranges cross-checked in September 2026 against Checkatrade, BOXT, Daikin, OVO and four London installers publishing 2026 figures. There is no London surcharge in this model: the only adjustment is travel, the congestion charge and parking.

City of LondonBarking and DagenhamBexleyBromleyCroydonEalingGreenwichHammersmith and FulhamHaveringHillingdonHounslowKingston upon ThamesLambethLewishamMertonNewhamRedbridgeRichmond upon ThamesSouthwarkSuttonTower HamletsWandsworthBarnetBrentCamdenEnfieldHackneyHaringeyHarrowIslingtonKensington and ChelseaWaltham ForestWestminster Our base, N14

Based in N14, working across London

All thirty three boroughs. The highlighted ones have a page on the local housing stock and what a job costs there.

  • Where most of our work is
  • Also covered, same price
  • Our base, N14

Ten years of this, under one roof

Air conditioning, heat pumps, solar and battery storage. The same people survey, install, and come back three years later.

Climate Shield is the cooling side of Electro Heating Limited, company number 12609754. Cooling, heating and hot water are one trade now, because one outdoor unit does all three, and there are very few firms in London who fit all of it themselves rather than subcontracting whichever half they do not do.

  • 10+Years of experience
  • 1 dayTo fit air conditioning in one room. A heat pump is two to three days, and solar is one to two
  • 33London boroughs, no travel surcharge
  • 0 percentDeposit before the free survey
Outdoor air conditioning unit on wall brackets above brick, with isolator switch and pipework in trunking
Matte black wall-mounted indoor air conditioning unit with the display lit
Outdoor unit on a flat roof beside patio doors with refrigerant cylinder and gauges during commissioning
Ceiling cassette air conditioning unit recessed into a white ceiling next to a downlight
Midea outdoor unit installed on paving against a rendered wall with condensate run
Engineer holding the controller beside a wall-mounted indoor unit above a sofa
Outdoor unit mounted high on a rendered wall with a ladder alongside
White wall-mounted indoor air conditioning unit showing the set temperature on its display
One trade, three companies, the same van

The owner runs Climate Shield for cooling, Green Electro Heating for heat pumps and solar, and Flame Shield London for fire safety. It is one team of engineers and one set of insurance, which is why a job that turns out to need a heat pump rather than a split system does not need a second contractor and a second quotation.

We will tell you when the answer is no

A first floor flat with a boundary two metres away, a listed frontage, a freeholder who has refused three times already: these come up every week. Where the job is not lawful or not viable we say so on the survey rather than taking a deposit and finding out later. It costs us a sale and it is the reason the reviews we do have are real.

The price is written before anyone starts

Every quotation says what is included and what is not. It does not move unless the scope moves, and if we find something behind a wall that nobody could have seen, we tell you before we do the work and you decide.

One box outside, cooling, heating and hot water

Most London terraces have room for exactly one outdoor unit. These systems do all three jobs from it, and almost nobody here fits them.

Outdoor unit and pipework fitted to the side of a London house
The one place it can go, on a side return in north London.
Air source heat pump outdoor unit installed beside a house

Integrated air to air and air to water

Samsung Quint, Daikin Altherma X

One outdoor unit driving both the wall units that cool your rooms and the radiators, underfloor and cylinder that heat the house. It replaces the gas boiler and the air conditioning in the same install.

Hot water cylinder and system controls installed in a plant cupboard

Air conditioning that makes your hot water

Daikin Multi Plus

A multi split that cools two or three rooms and produces the domestic hot water from the same outdoor unit. The heat it takes out of your bedroom in August goes into the cylinder instead of into the street.

The three things people ask before the price

Outdoor air conditioning unit on wall brackets above brick, with isolator switch and pipework in trunking

Do I need planning permission?

Usually no, sometimes yes, and in a conservation area it is a different conversation entirely. All eight conditions are in one table.

Read the rules
Engineer holding the controller beside a wall-mounted indoor unit above a sofa

What will it cost to run?

About 12 to 30 pence an hour for a typical bedroom on a hot day, and less once it has pulled the room down and starts cycling.

See the running cost
Matte black indoor air conditioning unit on a white wall in a period room

Will it ruin how the room looks?

It does not have to. Units come in matte black as well as white, and where the room deserves it a ceiling cassette disappears completely.

See the systems

Recent installs

Six jobs, with the system and the days on site.

Midea outdoor unit installed on paving against a rendered wall with condensate run
Rear elevation, rendered wall
System
Midea single split
Refrigerant
R32
On site
1 day
LG outdoor unit mounted on wall brackets with isolator switch and trunking
Wall-mounted, first floor
System
LG single split
Access
Ladder
On site
1 day
Outdoor unit suspended on lifting straps against a brick wall during installation
Hoisted to a rear wall
Property
Terraced
Access
Strap lift
On site
1 day
Outdoor unit on a flat roof beside patio doors with refrigerant cylinder and gauges during commissioning
Flat roof, commissioning
Stage
Weighed charge
Refrigerant
R32
On site
1 day
Outdoor unit mounted high on a rendered wall with a ladder alongside
High-level mount
Property
Loft conversion
Access
Ladder
On site
1 day
Finished Midea outdoor unit standing on paving slabs beside a house wall
Ground level, side return
System
Midea single split
Refrigerant
R32
On site
1 day

Three ways it goes in

The part you live with. Worth choosing.

White wall-mounted indoor air conditioning unit showing the set temperature on its display

Wall-mounted

2.5kW to 5kW per room

The standard answer. Quickest to fit, cheapest, and the easiest to service later.

Matte black wall-mounted indoor air conditioning unit with the display lit

Wall-mounted, black

Same output, different room

Where a white plastic box would fight the room, the black finish stops it shouting.

Ceiling cassette air conditioning unit recessed into a white ceiling next to a downlight

Ceiling cassette

Needs void above the ceiling

Nearly invisible and the most even air distribution. Costs more and needs the depth.

How the job runs

Nothing is charged until the price is agreed in writing.

  1. You call or message

    Two minutes. Tell us the postcode, the rooms and roughly what you want. We say straight away if it is a job we should be doing.

  2. Free survey

    Usually within 48 hours. We measure the rooms, find the outdoor unit position, check the electrics and check the permission position for your address.

  3. Written fixed price

    One number, what is included, what is not, and the make and model of every unit. It does not change unless you change the job.

  4. Install and commission

    One day for a single room. Pressure test, vacuum, weighed refrigerant charge, electrical certificate, and we show you how to use it before we leave.

Questions people actually search

Do I need planning permission to install air conditioning in London?

In most cases no. A domestic outdoor unit is normally permitted development in England, which means no planning application, provided it meets a short list of conditions: one unit only, at least one metre from the boundary if it is on a wall or roof, not on a wall facing a highway forward of the principal elevation, not above the highest part of the roof, and quiet enough to meet the MCS 020 noise standard.

London breaks that more often than anywhere else, because London has more conservation areas, more listed buildings and more flats. Every condition is set out on the planning permission page.

How much does air conditioning cost to install in London?

A single room wall-mounted split system, supplied and fitted with VAT, is typically 1,750 to 3,500 pounds in London. A two-room multi-split on one outdoor unit is typically 3,200 to 5,500 pounds, and a three-room system 4,500 to 7,500 pounds.

What moves the number is access, pipe length and electrics rather than the unit itself. The full breakdown and a calculator are on the installation cost page.

Can I put air conditioning in a leasehold flat?

Usually yes, but you need the freeholder's written consent before anything else, because the outdoor unit changes the exterior of the building and almost every London lease restricts that. Planning permission is a separate question and it comes second.

We give you the drawing, the unit specification and the noise data the managing agent will ask for, at no charge. There is a full order of events on the leasehold flats page.

Does air conditioning also heat the room in winter?

Yes. Every system we fit is a reversible air-to-air heat pump, so the unit that cools in August heats in February. It moves heat rather than making it, which is why it returns roughly three to four units of heat per unit of electricity.

That makes it the cheapest way to heat one room that most London homes have, and it is why a lot of customers who bought it for summer end up using it more in winter.

Is there a government grant for air conditioning?

No. There is no UK grant for air conditioning or for air-to-air heat pumps. The Boiler Upgrade Scheme pays 7,500 pounds towards air-to-water heat pumps only, which are a different machine that heats water for radiators and a cylinder rather than blowing cooled or warmed air into a room.

If the grant is what you are after, that is an air source heat pump, and we install those too.

How long does an installation take?

One day for a single room in a typical north London house, including commissioning and handover. A two or three room system on one outdoor unit is usually two days.

We work in one property at a time rather than starting four and finishing none, so the date you are given is the date the work happens.

Do you work on car air conditioning?

No. This is building air conditioning only, for homes and commercial premises. Vehicle air conditioning is a separate trade with separate qualifications and we would be no good at it.

Which areas of London do you cover?

All of Greater London, with a north London focus. We are based in N14, so Barnet, Enfield and Haringey are our nearest work and usually the quickest to book. There is a page per area on the areas we cover page.

Get a straight answer before you spend anything

Free survey, written fixed price, and an honest answer about permission and placement for your actual address. If the job is wrong for you we will say so.

Monday to Friday 9am to 7pm, Saturday 10am to 3pm, Sunday closed

Or leave your number

When would suit you?
Or send it another way

Free, no obligation, and we will tell you if the job is wrong for your property. We reply the same working day.

Monday to Friday 9am to 7pm, Saturday 10am to 3pm, Sunday closed