Air Conditioning Installation Lewisham

Air Conditioning Installations from £1300 – 0% VAT

Lewisham is a borough that effortlessly blends a city energy with tight community character. Its architectural landscape is an interesting mix of areas, in Brockley, Telegraph Hill and Blackheath you can find historic Victorian and Edwardian tree lined terraces, mid century municipal cottage estates in Downham and Bellingham and in Lewisham Gateway and Catford town centres you can find new build modern, tall modular glass skyscrapers redefining the area. Whether you are living in a new build modern high rise or a 150 year old period property, cooling installation solutions differ based on the property, the layout and the characteristics. We offer free quotations throughout the borough including Lewisham Town Centre/Hither Green (SE13)Brockley (SE4), New Cross( SE14), Forest Hill(SE23) Sydenham(SE26), Catford (SE6), Bellingham(SE23), Blackheath (SE3) Lee (SE12)and Deptford (SE8) where our experienced engineers familiar with Lewisham’s specific characteristics, can inspect your property and suggest you the best air conditioning solution either via a quick video call or an in person walkthrough.

REFCOM Certified AC Installations Tailored to Lewisham’s Character

We provide professional, F-Gas certified air conditioning installations across the entire London Borough of Lewisham, whether your home sits off the busy South Circular (A205), near the A20 (Lee High Road)or down toward the Kent borders. We provide local air conditioning installations that you can trust.

Navigating Lewisham’s 29 Protected Conservation Areas

Lewisham places a massive emphasis on protecting its rich architectural evolution with 29 designated Conservation Areas. Among them are the famous grand Victorian villas of the Brockley Conservation Area, the elevated properties of Telegraph Hill, the unique Arts and Crafts designs of the Perry Vale and Christmas Estate and the historic vistas of Blackheath.

Premium period conversions and multi story terraces, have high ceilings and plaster details. However, usually the top floor loft conversions and master bedrooms turn into absolute ovens during summer heatwaves. In these properties our engineers suggest ducted air conditioning or multisplit units to satisfy Lewisham Council’s strict visual heritage and Article 4 directives. With this system the external unit can be “hidden” in the back garden and multiple split units in each room. With this, we can carry out the installation while leaving your historic property front untouched.

Smart Solutions for High-Rise Apartments and Lewisham’s Town Centre Regeneration

At the other end of the spectrum, the northern and central parts of the borough, especially around Lewisham Exchange and Deptford Landings we have new build ultra modern, glass fronted buildings.

These modern apartments are built to rigorous insulation standards, which creates a massive problem: they trap heat very well which is great during winter, but during summer the temperatures can be similar to greenhouse’s. In addition, leasehold agreements strictly prohibit drilling through the external architectural cladding or mounting bulky equipment on visible balconies. For these tricky layouts, our engineers design a compact, high efficiency split system or internal climate control units that bypass external restrictions completely, keeping you perfectly cool while staying fully compliant with your building management.


Engineer installing an air conditioning unit

Why Lewisham Residents choose Air Conditioning?

Lewisham’s highly distinct geological feature is that the borough is shaped like a giant topographical bowl. Surrounded by high, tree covered hills like Telegraph Hill, Forest Hill and Sydenham Hill, the central town centres including Lewisham Central, Catford and Deptford, sit directly at the lower level base of the borough where the Ravensbourne and Quaggy rivers meet.

During summer heatwaves, this geography creates a frustrating Topographical Thermal Trap. While properties up on the hills might catch an occasional breeze, the lower level areas traps heat and humid air. in combination with the intense brick and asphalt infrastructure of the centre absorbs heat all day, trapping the heat within the valley floor. When night falls, this thermal mass radiates straight back into the atmosphere. The indoor temperature in local homes refuses to drop, leaving bedrooms feeling incredibly sticky, humid and suffocating well past midnight.

Standard household fans simply stir this heavy, humid valley air around your face. Air conditioning acts as the ultimate structural equalizer. It doesn’t just move air; it features a dedicated dehumidification cycle that pulls gallons of heavy moisture out of your indoor climate every hour while dynamically dropping the temperature. It breaks the “bowl” effect entirely, transforming a humid, stuffy room into a dry and perfectly refreshing sanctuary.

Air quality is a critical focus for local residents, especially for properties near heavily congested traffic roads like the South Circular (A205), Lewisham High Street, or the busy junctions around New Cross. Opening your windows to cool a bedroom down often means welcoming in an invisible cocktail of tire micro plastics, brake dust and traffic soot that settles on your furniture.

The modern air conditioning units we install, solve this entirely as they have advanced filters that actually filter the air inside your property. That allows you to keep your windows closed and have the air conditioning continuously scrub your indoor air, trapping microscopic dust, road pollution particles and urban grime.


Smart Benefits of Air Conditioners for Every Season

  • Reduce Your Winter Bills: Many of Lewisham’s spacious Victorian properties and uninsulated brick conversions are notoriously drafty and expensive to heat using traditional gas boilers. Because our modern air conditioning units are actually highly efficient air to air heat pumps, they can heat an individual room almost instantly. This localised zoning means you only pay to heat the room you are actually using and keep your winter energy bills under control.
  • Perfect Climate Control: With the various functionalities of an Air conditioning system, you can cool, heat, dehumidify and filter the air in any room of the house letting you maximise every single square foot of your property, 365 days a year.
  • Boost Your Property’s Value: Lewisham’s property market remains very competitive especially for professionals commuting to the city due to the good transportation links. Home comfortability is a massive draw. A professionally installed Air Conditioning system adds a major selling point and premium value to any local property.

What Happens When We Install Your Air Conditioning Unit?

We are registered with REFCOM, the UK’s largest Air Conditioning installer register, our details can be found on here: REFCOM | The UK’s Market Leading F-Gas Certification Scheme

0% VAT available with home installations.


Air Conditioning Installation Journey

Consultation  

Our experienced engineer in Lewisham will either visit your property or have a video call with you, to survey your property and discuss with you the options available while making sure you comply with the councils regulations.


Scheduling and Quote Phase

After the Consultation, you will receive a transparent and clear quotation to your email with the options discussed during the engineers visit/call. We guarantee that our prices are straightforward without additional or hidden charges. We are committed to give excellent value for money without sacrificing the quality of our works.


On the Day Installation

On the day of installation, our engineers will arrive with all parts required for the installation. They will carry out the fitting of your air conditioning unit with minimum possible disruption.


Fully Tested and Standard Checked  

We fully test all installed units to ensure that the units work properly. This ensures all readings are within he manufacturers guidelines. We will also provide you with all the necessary documentation and training on how to use your new cooling system.


After Installation Support

Our team is there for you, whether you have a quick question or if you would like to arrange an air conditioning service.


Why Choose Efficient Home Energy?

With years of experience in air conditioning installation, Efficient Home Energy guarantees quality, support, and a completely accredited service that is dependable and reasonably priced. 

We take great satisfaction in providing the greatest installations available, and we handle every task with consideration. We are FGAS certified contractors, which means all our work meets the latest standards and regulations.  

Trusted by thousand customers across London for our reliable and headache free services. Thousands have rated us on Google,Trustpilot, and Checkatrade with 5 star review throughout London and in particular your area – Lewisham

We are here to help before, during and after the work is done. Got a question? Just reach out. We’ll always do our best to explain things clearly and make sure you feel confident about what’s happening at every step.


How does air conditioning work?

Air conditioning systems remove the unwanted heat in a property and replace it with cooler, dry air. As the air conditioning systems we install are air to air heat pumps, you can use it as heating as well, where it just reverse the cooling circle. With heating, it works in the opposite way by providing heat inside your property. 

Do I need planning permission from Lewisham Council to install my air conditioning units?

It is very unlikely that you would need to apply for planning permission to have an air conditioning unit installed in your property. However, if your property is a leasehold flat, a listed building, or sit within one of Lewisham’s 29 historic Conservation Areas (like Brockley or Blackheath), stricter local planning rules apply. We would recommend you to check with your local council or freeholder to be sure before we carry out an installation. 

Do I need to do anything before the installer arrives?

We kindly ask that you clear all areas where the installation will take place. This is inclusive of the area surrounding the wall where the interior unit will be fitted and also on the exterior where the external unit will be installed. This will allow the engineer to begin the work from the point of arrival, keeping the installation swift and efficient. 

What’s the cost to install an air conditioning unit? 

We offer a comprehensive installation service with aftercare starting from £1700. Prices vary depending on size and complexity of the installation, the units we install, the size of the installation and also the specific unit model you decide to go ahead with.

How long does installation take?  

A single unit installations for domestic properties can usually be carried out in a single day. Bigger installations of multiple units may require longer. Our engineers will always advise you on the length of the installation during the initial consultation after inspecting your property. 

Are air conditioning units noisy? 

The modern units we install are typically working with the minimal noise pollution and will go unnoticed.  

Will an air conditioner affect my energy bills? 

Yes, Because our modern air conditioning units are actually highly efficient air to air heat pumps, they can heat an individual room almost instantly. This localised zoning means you only pay to heat the room you are actually using and keep your winter energy bills under control.

Can I remotely control my air conditioning? 

A lot of modern systems now come with Wi-Fi or smart controls, allowing you to adjust the temperature from your phone or tablet, even when you’re not at home. 

How long will my air conditioning unit last? 

Your system can last up to 10-15 years with proper installation and maintenance. All our units come with a warranty.  

Can air conditioning help with mould and dampness? 

Yes. Condensation related damages and mould growth can be prevented by reducing indoor humidity.  

Can an air conditioning unit help with allergies? 

Yes. Modern units are fitted with special filters that will help remove dust, pollen, and other allergens, improving indoor air quality.  will help remove dust, pollen, and other allergens, improving indoor air quality. 


Get in touch today to receive your same day quote.

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Excellent796 reviews
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Wendy Norman profile picture
Wendy Norman
26 August 2026
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Excellent personal service! Elle was extremely helpful, knowledgeable, and went above and beyond to make sure everything was handled seamlessly. It is so rare to find this level of genuine care and attention to detail these days. I couldn't be happier with the experience—I will definitely be using this company again and cannot recommend them highly enough!
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maggiedayable
25 August 2026
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easy to talk to, quick telephone response, keep in touch through the whole process even with any hitches, EXCELLENT, professional
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Paris Adamopoulos profile picture
Paris Adamopoulos
21 August 2026
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Punctual, professional, easy to book, great prices, and very polite. I have been using efficient home energy two years and I now use them for both my flats for all services.
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john SEARLE profile picture
john SEARLE
19 August 2026
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On time efficient and pleasant personality- will use them again.
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Almara Abgarian
19 August 2026
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Efficient, friendly service. Have used them several times and pricing isn’t bad either.
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Suely Sousa
19 August 2026
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Amazing job. Super efficient and kind service 🙌🏼👏🏼👍
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Rachel Hobbs profile picture
Rachel Hobbs
14 August 2026
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Had a EPC assessment undertaken by Efficient Home Energy. It was easy to book and the assessor arrived on time. He undertook the work quickly and I received the report later the same day. I’m happy to recommend their service.
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Jakub Kamecki profile picture
Jakub Kamecki
14 August 2026
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All good. Happy with the services timely arrival and prompt execution.
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George Charalambides
13 August 2026
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Great company to do business with and very efficient. I found their number on the internet and after informing them of the units that we had they came back with a very competitive quote. We had been using another company but the owner decided to move to Bristol so had to find someone else. Very lucky that the search engine found EHF and Ellie who I spoke to sent the quote virtually within 1 hour of conversation. The technician who was Alexander came as promised between 8.00 am and 11.00 am and carried out a full check and clean on the 3 units and sent us the reading for all within 2 hours. No problems and all filters etc cleaned and batteries check in remotes etc. We will certainly be using EHL again. Thank you so much for a Efficient service ! Will recommend them to our friends that have air conditioning in their homes.
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Church LLP
13 August 2026
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We always use these guys for our portfolio. They’re friendly, reliable and efficient and make our job so much easier. The charges are also very reasonable. Thanks EHE 😊

Air Conditioning Installation Areas We Cover:

We provide Air Conditioning Installation across all London boroughs within the M25