Air Conditioning in a South London home by Future Home Energy
F-Gas Registered • Twelve South London Boroughs

Air Conditioning Installation Across South London

Split and multi-room air conditioning across twelve South London boroughs, from Victorian terraces to riverside new-builds, sized properly rather than sold off a shelf.

07538 192738
1 Day
Typical Install
A+++
Efficiency Rated
Heat
& Cool Year-Round
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Home Survey
Greater London

Air Conditioning in South London

South London gets hotter than the rest of the country and stays hotter for longer, and it is not really about the weather. It is the urban heat island: brick, tarmac and concrete absorb heat through the day and release it overnight, so an inner-London bedroom does not cool down after dark the way the same room would in Kent. That is why cooling has moved from a luxury to something people fit as a matter of course, and why demand here is concentrated in bedrooms and loft rooms rather than living rooms.

The region is not one kind of building, though, and the right system differs sharply across it. A solid-walled Victorian terrace in Lewisham has high heat gain, no cavity to run pipework through and probably a conservation area over it. An interwar semi in Bexley or Bromley has a cavity, a garden and no planning constraint worth mentioning. A large villa in Wimbledon or Dulwich needs a multi-split. A riverside flat in Woolwich or Nine Elms has a 0.6 cubic metre cap on its outdoor unit and a freeholder who has to agree to it. Sizing is a calculation, not a guess, and so is the planning position.

We cover twelve South London boroughs for air conditioning installation, servicing and repair. Greenwich, Bexley and Wimbledon are where we work most and have their own pages below, with the borough-specific planning and property detail set out in full. If your borough is not one of those three we still cover you, and the same F-Gas registered engineers do the work.

Local Detail

What Changes Across the Region

Four patterns cut across borough boundaries, and which one you are in decides the system more than your postcode does.

Solid-Wall Victorian Stock

Greenwich, Lewisham, Southwark, Lambeth and inner Wandsworth. High solar gain, no cavity for pipework and frequently a conservation area deciding where the condenser can sit. Refrigerant runs are either boxed externally at the rear or planned internally through finished rooms, so the survey matters more here than the equipment does.

Interwar Suburbia

Bexley, Bromley, Sutton, Croydon and outer Merton. Cavity walls, side returns and gardens. Short pipe runs, an easy condenser position and usually no planning constraint at all. This is where the same system costs least to install, and where a single-day single-split job is genuinely a single-day job.

Large Period Houses

Wimbledon, Richmond, Dulwich, Blackheath and Beckenham. Multiple rooms wanting cooling, which means a multi-split running up to five indoor units from one condenser rather than several separate systems. In the conservation areas that cover much of this stock, minimising external plant is not just tidier, it is often what makes the scheme acceptable at all.

Flats and Riverside New-Builds

The Greenwich Peninsula, Kidbrooke, Woolwich, Nine Elms and the Croydon towers. Simpler on planning and harder on permission: the outdoor unit is capped at 0.6 cubic metres rather than 1.5, and the lease normally requires written freeholder consent before anything is fixed to the building. Balcony and designated plant positions are the usual answer, and some leases rule it out.

Coverage

Where We Work in South London

Postcode Districts
  • SE
  • SW
  • BR
  • CR
  • DA
  • KT
  • SM
  • TW
Boroughs Covered
  • Greenwich
  • Bexley
  • Bromley
  • Croydon
  • Kingston upon Thames
  • Lambeth
  • Lewisham
  • Merton
  • Richmond upon Thames
  • Southwark
  • Sutton
  • Wandsworth

Read more about air conditioning across London, or see every area we cover.

Common Questions

Air Conditioning in South London FAQ

Which South London boroughs do you cover for air conditioning?
Greenwich, Bexley, Bromley, Croydon, Kingston upon Thames, Lambeth, Lewisham, Merton, Richmond upon Thames, Southwark, Sutton and Wandsworth. Greenwich, Bexley and Wimbledon have their own detailed pages. We also cover the rest of London and Essex, so if you are north of the river we still come to you.
Do I need planning permission for air conditioning in South London?
It depends on the borough and on whether you are in a conservation area. Since 29 May 2025 an air source outdoor unit can sit within a metre of the boundary and be up to 1.5 cubic metres on a house, with two units on a detached property. Inside a conservation area the unit must not go on a wall or roof fronting a highway or nearer a bounding highway than the building. Flats are capped at 0.6 cubic metres, and listed buildings need consent. Greenwich has 23 conservation areas and Merton has 28, while Bexley has 16, so the answer genuinely differs by borough.
Why does South London need air conditioning more than elsewhere?
The urban heat island. Brick, tarmac and concrete absorb heat through the day and give it back overnight, so an inner-London bedroom does not cool after dark the way the same room would outside the city. That is why most of what we fit goes in bedrooms and loft conversions rather than living rooms: the problem people actually want solved is not being able to sleep.
Will air conditioning heat my home as well as cool it?
Yes. Every system we install is a reversible air-to-air heat pump, moving roughly 3 to 4kW of heat for every 1kW of electricity drawn. That makes it an efficient way to heat a single room in spring and autumn without running the boiler for the whole house, which in a large or poorly zoned property is often where the real annual saving sits.
How much does air conditioning cost to install in South London?
It depends on the property far more than the postcode. A single-split in a Bexley semi with a cavity wall and a garden position is a different job from a multi-split in a solid-walled conservation area terrace, which is why we survey before quoting rather than publishing a headline figure. The survey and the quote are free, the price is fixed, and finance is available.
Do you service air conditioning as well as install it?
Yes, including systems we did not fit. Annual servicing keeps the filters clean, checks the refrigerant charge and keeps the unit at its rated efficiency, and it is normally a condition of the manufacturer warranty. We can combine it with your annual boiler service on the same visit.
How many rooms can one outdoor unit serve?
Up to five indoor units from a single condenser on a multi-split system, each controlled independently. Past two rooms that works out cheaper than separate systems, and it means one piece of external plant instead of several. In the conservation areas that cover much of South London, keeping the external footprint to one unit is often what makes a scheme acceptable.
Booking in South London

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Also in South London

Our Other Services in South London

Same engineers, same fixed-price approach, same part of London.

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