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Air Conditioning in London


The whole subject of Air Conditioningcan fill many books and this is a very long page so links have been placed on the right hand column in an effort to take you directly to the area of this page where you can find what interests you.

Air Conditioning in London - About Delta T

Established in 2000 we have built an outstanding reputation in the Air Conditioning industry. We specialise in the design, supply, installation and commissioning of a vast range of cooling and heat pump air conditioning equipment across London.

We have worked for some of the biggest names on the High Street: - Laura Ashley, New Look, Gap, Greggs, Percy Ingles, Brighthouse and Corals to name just a few.

We also cater for the domestic air conditioning market with single and multi-split systems tailored to individual homes.
From small business to the larger retailer and office complex we are familiar with the entire range of split, multi and VRV, VRF systems available on the market today.

We have been air conditioning London for nearly sixteen years with thousands of high quality installations across the capital.

WHY CHOOSE US?


We are dedicated to providing the highest possible customer service and are proud of our good name in the field of Air Conditioning. We strive to uphold that good name whatever the task. All our customers are assured of the same high level of care & professionalism be they small or large. We aim to have happy satisfied customers who come back year after year and are happy to use Delta T and recommend us to their friends and business associates, this is our work ethos and we strive to achieve this with all of customers.

We’re proud too that 80% of our work is either repeat business or referrals from satisfied customers Delta T have been air conditioning London for sixteen years with thousands of satisfied customer who rely on us we believe you can too!

We believe we offer cost effective and versatile solutions to all of our clients and can work with you to ensure budgets and timescales are met.

We can cater for full turnkey projects including mains power supplies and crane age / access equipment provision as well as site supervision and full Auto cad drawing production with high quality operation and maintenance manuals for the larger project.

Air conditioning suppliers London


We only supply air conditioning units from the leading manufacturers so any system we fit will be of the highest quality and thoroughly tested before leaving the factory to ensure trouble free operation from day 1 of installation, that way there are no hidden surprises for our customers.
When you are looking for air conditioning suppliers anywhere in London look no further than delta T we can supply the following makes

Daikin Air conditioning and heat pumps including the Nexura, Emura and Altherma systems, along with the Daikin VRV four the latest in a long line of high quality Variable rate and volume systems to be offered in the UK market place by this high quality manufacturer, it is worth mentioning that Daikin only make air conditioning products and have their entire focus on the advancement and improvement of their range of air condition systems.

Mitsubishi Electric air conditioning featuring the stylish Zen units and Ecodan heat pump range, as well as the world renowned city multi VRF range, Mitsubishi are the market leader and have earned a reputation for reliability and high quality products within the industry as a whole.
Toshiba air conditioning and MVHR range of systems, we can offer up to seven year warranties when these products are installed by Delta T!!
Toshiba are so confident in their range of products they are prepared to place a seven year warranty on them when installed by an approved contractor such as Delta T, that has to show confidence and a world class build quality!

Mitsubishi Heavy industries have forged a name in recent years as a company to be reckoned with, offering a wide range of systems and long five year warranties when installed and maintained by an approved contractor such as Delta T.

Fujitsu, Panasonic, LG, Samsung, Airedale and a host of other top quality marques are all available from us throughout London, with fast delivery times and competitive prices.

Delta T services air conditioning supplier throughout London you can rely on!

Air conditioning Installation London


We offer a vast choice of equipment suitable for residential, commercial and industrial applications. This can range from one small single split system to large multi VRF/VRV systems serving an entire office block.

Modern day units and systems have built in inverter technology, which ensures low energy consumption and uses environmentally friendly refrigerants which are non-ozone depleting As well as providing cooling in the summer time they also provide energy efficient heating during the winter and are some of the most energy efficient forms of heating available today.

All of our air conditioning installations throughout London are carried out using the very best quality materials and accessories so you can be sure of a high quality reliable air conditioning system that will give you years of reliable service and comfort.

Once our quotation is accepted the installation will be carried out by our highly trained and experience engineers.  This will be done with the minimum disruption to your life or workplace.

You can relax with the peace of mind that all of our engineers are fully trained on all of the systems we install.

On completion you will be guided through the operation of the system and left with a user guide booklet.  We will then write to you with details of our comprehensive after sales and back up services available to you

Air conditioning Services London


A comprehensive after sales and back up service is available once an installation is complete, and this complete package is further enhanced by our Service Division to ensure the investment you have made in your equipment will last for many years. We operate a manned help desk which can often solve minor issues over the phone, but which also offers a fleet of mobile engineers who carry out planned maintenance and reactive call outs should your system fail, we also look after equipment not installed by Delta T.

List of air conditioning Services throughout London

Air conditioning suppliers throughout London for all quality marques
We only fit environmentally friendly, clean & highly efficient systems
Free Help & advice to choose the right system for your needs
Unrivalled customer care
Full support & back up
free site surveys
Competitive Prices
One off service visits
Air conditioning servicing
Gas reclaim service
Safe disposal of old existing air conditioning units
R22 replacement programmes
Diagnostics and repairs
Maintenance of new and old units
Relocating existing systems to suit your new layouts etc...
Free advice
Long extended warranties on all makes when maintained properly
Competitive maintenance contracts
Fast access to spares
Dealer approved by all of the quality manufacturers
We are here to offer help and advice whatever your Air Conditioning needs may be.

Air conditioning Maintenance London


Our high quality maintenance and support team ensure: unit life longevity; energy efficiency to save money and lessen environmental impact; optimised up-time; improved air quality and comfort; compliance with the latest F-Gas regulations; reduction of any risk of breakdown and thus replacement costs.

A clean air conditioning system will run at lower pressures and temperatures than a dirty system, these extra strains placed on your system will often cause premature failure of a system and costly repairs, a planned preventative maintenance schedule eliminates these risks and can extend the trouble free operation of your air conditioning systems substantially.

  • Regular maintenance contracts ensuring you of peak performance at all times
  • One off visits for maintenance
  • Maintenance for equipment not installed by Delta T old or new!
  • Extended warranties on all equipment installed by Delta T

Air conditioning Repairs London


All of our engineers are time served and have a wealth of experience with the vast array of different air conditioning units and refrigerant gases.
They are all highly trained by the manufacturers themselves to ensure you get a fast efficient service every time, with a range of diagnostic skills to cover every eventuality.

We are able to offer Daikin air conditioning repairs to the whole range of systems both new and old no matter what style of system you may have.

We are also specialists at carrying out Mitsubishi Electric air conditioning repairs and have access to a vast array of UK spares on short lead times and some of the largest stocks available to the trade.
Delta T are an approved contractor for Toshiba air conditioning repairs wherever you are in London.
Our engineers can effectively carry out repairs to Mitsubishi Heavy industries, Fujitsu, Panasonic, LG, Samsung, Airedale, Sanyo, Denco and many other makes of air conditioning systems.
Our fleet of mobile engineers carry a host of refrigerants and parts and can often have you up and running on a single visit, but should we need to order spare parts you can have confidence that our supply chain is fast and effective to offer you the customer the best possible service in the shortest time scale.

Types of Air conditioning unit’s ideal for London


Wall Mounted

Popular for both residential and commercial property where space is not an issue, wide range of applications available, comfort cooling and heating and one of the lower cost options when you are working to a budget.

For the domestic market Daikin Emura wall mounted systems are both cutting edge design and highly efficient, Mitsubishi offer the Zen wall mounted range for the modern looking home or office, all of these systems are available as single split systems but can be perfect for the multi split application where two, three, four or even five internal rooms are connected to a single external condenser unit, very popular in the domestic market where external noise and appearance is of high importance.

Ceiling Cassette

Ideal for office environments where space is an issue as these units can be recessed in to the ceiling voids or false ceilings to utilise space. These units also provide both heating and cooling and are very cost effective with the average unit covering 10 square metres of floor area, making these the most popular unit for the retail sector.
These systems can be used as single splits or where outdoor space is at a premium twin triple and quad options with up to four internal fan coils fed from a single external unit which keeps the plant footprint to a minimum.

Floor Mounted

These systems are used in applications where space is at a premium, these units can be recessed in to wall spaces where wall space is at a minimum. These units provide both heating and cooling and are similar to a radiator but use refrigerant instead of water, often

found in the domestic market especially the Daikin Nexura range which comes in a variety of capacities to suit most rooms and has dashing good looks to boot.

Ceiling Suspended

Used where a suspended ceiling is not available, these systems can be hung underneath a plasterboard ceiling and are often found in a commercial environment.
These units are ideal for retail units where airflow is directed at high level heating or cooling efficiently, often found in long narrow retail premises these systems give excellent air throw across the space and yet can be sited well away from the main trading area.

Ducted /Concealed

Used in residential and commercial property where concealment of the internal unit is required. Airflow is provided through grilles in the ceiling and walls which can be colour matched to wall decor to provide unobtrusive heating and cooling., These are found in nearly all Hotel bedrooms and are used as a base build in nearly all new large office complexes, with capacities up to 50Kw from Mitsubishi Electric these really are versatile systems with one unit capable of serving around 400 metres of floor area via ductwork and grills.

VRV / VRF Systems

VRV and VRF systems are the main stay of the larger commercial and multi room premises offering the capability to have simultaneous heating and cooling to multiple rooms from a single external condenser, with amazingly high efficiencies these systems can be coupled to a host of internal fan coils including all of the afore mentioned above.

Daikin, Mitsubishi Electric and Toshiba are all pioneers when it comes to top quality VRV/VRF equipment and have products at the cutting edge of technology delivering faultless heating and cooling with the lowest energy consumption of any air conditioning system.

With the possibility of having hundreds of kilowatts of capacity from a single system feeding many floors and numerous internal fan coils these are the most versatile of the air conditioning systems available today.

We are experts at design and supply of these revolutionary systems and can guide you through the process of getting just the perfect system for your needs.

We are fully qualified

Delta T are registered for the movement of controlled waste with the environment agency and operate to fully comply with the hazardous waste regulations.

We are certified by both Refcom and F-Gas, all of our engineers hold a valid F-Gas qualification, and All Delta T customers are kept compliant with their legal requirements under the F-gas regulations when they have a maintenance agreement in place.


All of our engineers also hold SKILL Cards (CSCS) and are members of ACRIB (Air Conditioning Refrigeration Industry Board) and have been CRB/ DBS checked.


Can you save money?


If you have an older style air conditioning system not running on the new inverter technology then you could save up to 60% on your operating cost by installing a new air conditioning system, even if you have a new air conditioning unit, if the filters are not cleaned then your operating costs could be between 5 -15% higher than a well maintained system and that doesn’t account for the additional wear and strains put on the system by the higher temperatures and pressures of a dirty filter and coils both internal and external, which can lead to expensive long term repairs and can cause major component failure in worst case scenarios.


For the domestic customer the 5% Vat rate is an exceptional saving and represents excellent value for money.
Contact us


For a quick response ring our help desk or alternatively email us with your requirements and our friendly helpdesk staff will get back you shortly