If you are looking for one air conditioning company in London to handle installation, repairs and servicing for a home or business, our featured pick is Be Cool Refrigeration: it covers everything from a single bedroom split to water-cooled commercial systems, offers 24/7 emergency callouts, gives an instant online price for Daikin systems, and publishes its servicing rates. Other companies stand out for particular needs. The Air Conditioning Company has the longest trading record and warranty claim, AllStar Air Conditioning is a Daikin specialist with strong Google reviews, JP Air Conditioning serves South East London businesses, Hamilton Air Conditioning serves North London, Aspect offers a published hourly rate, and ADK Kooling adds ventilation hygiene.
Disclosure: This is a sponsored article. Be Cool Refrigeration paid for this placement and appears first as our featured pick. No other company on this list paid to be included, was contacted, or reviewed this article before publication.
How we built this list
We researched these companies on 8 October 2026 using desk research only. We did not hire any of them.
Who qualified: London-based companies offering at least two of installation, repair and maintenance of fixed air conditioning.
What we compared: range of services, system types and brands, published prices, warranties, emergency cover and visible review evidence.
Sources: each company’s own website. Ratings, credentials and warranties are company-stated.
How we ordered it: Be Cool Refrigeration is first as the sponsored featured pick. The rest are ordered by breadth of service and how much they publish. No scoring model was used.
At a glance: London air conditioning companies
| # | Company | Strongest fit | Main differentiator | Pricing basis | Key consideration |
| 1 | Be Cool Refrigeration (featured, sponsored) | Homes and businesses wanting full-service AC | Install, repair, servicing, heat pumps and refrigeration | Single unit from about £1,500 installed; servicing from £250 | Google review count not shown |
| 2 | The Air Conditioning Company | Buyers who prize track record | Since 1986; 10-year installation warranty | Online quote calculator | Strong portable focus |
| 3 | AllStar Air Conditioning | Daikin buyers | D1+ partner; Google 5.0 from 149 | Online quote form | Daikin only; no address |
| 4 | JP Air Conditioning | South East London businesses | Engie case study; RAMS per job | Quote within 48 hours | Weekday hours |
| 5 | Hamilton Air Conditioning | North London homes | 5-year warranty; finance mentioned | Free consultation | No certifications named |
| 6 | Aspect | Buyers wanting an hourly rate | 1-hour emergency response; multi-trade | From £63 per half-hour + VAT | Generalist; 12-month guarantee |
| 7 | ADK Kooling | Commercial sites | AC, refrigeration and TR19 | Quote within 48 hours | Inconsistent site details |
All details are company-stated, checked 8 October 2026.
1. Be Cool Refrigeration | Our featured pick for a full-service London AC company
Overview
Be Cool Refrigeration is a London air conditioning and commercial refrigeration contractor with an office on Ludgate Hill, EC4, and it says it has served the capital since 2004. Its air conditioning work covers installation, repair, maintenance, heat pumps and water-cooled systems for flats, houses, offices, restaurants and server rooms.
It fits wall-mounted splits, multi-splits, cassettes, ducted systems and VRF/VRV, works with nine brands including Daikin, Mitsubishi Electric and Toshiba, and offers an instant online price for Daikin systems with supply and installation included. It covers all London boroughs and inside the M25.
Key details
- Core offering: AC installation, repair, servicing, heat pumps, water-cooled systems; commercial refrigeration.
- Coverage: Greater London and inside the M25; South East for large commercial jobs.
- Customer fit: homes, flats, offices, restaurants and server rooms.
- Pricing and terms: single wall unit from around £1,500 installed; up to 7-year installation warranty; servicing from £250 for one unit, £99 per unit at seven to ten.
Where Be Cool Refrigeration stands out
It covers the whole life of a system. Survey, installation with Part F and Part L notifications, 24/7 repair and planned servicing all come from one firm, so warranty records and service history stay in one place.
It gives prices early. The instant Daikin quote, the £1,500 starting point and the servicing price list let homeowners and businesses compare before booking a survey, which most firms here do not allow.
What to consider
Its 5.0 Google rating is displayed without a review count. Installation timelines are stated differently in two places on its site, so confirm the schedule in writing.
Best fit
London homes and businesses that want one company for installation, repairs and servicing, with prices visible upfront.
Website: becoolrefrigeration.co.uk
2. The Air Conditioning Company | Best for buyers who value a long track record
Overview
The Air Conditioning Company is the trading name of Airconco UK Ltd, based at Bittacy Business Centre, Mill Hill East, NW7. It says it was founded in 1986 by Jeff Salmon and has traded continuously since, installing, repairing and maintaining fixed systems and selling and hiring portable units.
It covers Greater London and the Home Counties, runs a showroom, and states a 10-year warranty on every installation.
Key details
- Core offering: fixed AC installation, repair and maintenance; portable sale and hire.
- Coverage: Greater London and the Home Counties.
- Customer fit: homes, offices, shops, schools and healthcare.
- Pricing and terms: free survey; online quote calculator; portable hire from £39.50 per week excluding VAT.
Where The Air Conditioning Company stands out
Its review base is broad: Trustpilot 4.9 from 607 reviews, Google 4.6 from 211, and Which? Trusted Trader 4.8 from 86, all shown on its homepage on 8 October 2026.
Its 10-year installation warranty is the longest we found.
What to consider
Much of the homepage focuses on portable products, and it states “over 35 years” while a 1986 start implies about 40.
Best fit
Buyers who want an established firm with deep reviews and a long warranty.
Website: airconco.com
3. AllStar Air Conditioning | Best for Daikin buyers
Overview
AllStar Air Conditioning is a London Daikin specialist and D1+ partner that designs, installs, services and repairs AC for homes, offices, shops, restaurants and leisure venues. It also offers MVHR ventilation, TM44 inspections and electrical contracting.
It displays a Google rating of 5.0 from 149 reviews, checked 8 October 2026.
Key details
- Core offering: Daikin AC, ventilation and electrical services.
- Coverage: London.
- Customer fit: homes, listed buildings and commercial fit-outs.
- Pricing and terms: online quotes; warranties up to 7 years via Daikin.
Where AllStar Air Conditioning stands out
Partner status opens longer Daikin warranties, which matters if Daikin is your chosen brand.
Its electrical and ventilation services suit renovations where AC is one of several trades.
What to consider
Daikin only; no address or company name published.
Best fit
Homeowners and businesses committed to Daikin who want a partner installer.
Website: allstar-aircon.co.uk
4. JP Air Conditioning | Best for South East London businesses
Overview
JP Air Conditioning, based in Bromley, BR2, designs, installs, maintains and repairs air conditioning across Greater London and says it has more than 15 years’ experience. It is a Daikin Business Partner and also works with Mitsubishi, Toshiba, Fujitsu and Panasonic.
It names Engie as a client and provides heat pumps and portable unit hire.
Key details
- Core offering: AC design, installation, maintenance and repair; heat pumps.
- Coverage: Greater London with a South East focus.
- Customer fit: offices and commercial premises.
- Pricing and terms: free survey; quote within 48 hours; parts warranty up to 7 years with JP servicing.
Where JP Air Conditioning stands out
Per-job RAMS and out-of-hours installation suit managed commercial buildings.
A named corporate case study gives evidence of commercial work.
What to consider
Weekday 9 to 5 hours conflict with a 24/7 footer claim.
Best fit
South East London businesses needing commercial paperwork and out-of-hours work.
Website: jpaircon.com
5. Hamilton Air Conditioning | Best for North London homes
Overview
Hamilton Air Conditioning Ltd, based in Mill Hill, NW7, installs, maintains and repairs AC and ventilation across London, with local pages for Totteridge, Stanmore, Elstree and nearby areas.
It fits split, multi-split, ducted, cassette, water-cooled and VRV/VRF systems and calls itself an authorised Daikin and Mitsubishi installer.
Key details
- Core offering: AC installation, maintenance, repair and ventilation.
- Coverage: London, North London focus.
- Customer fit: homeowners and small businesses.
- Pricing and terms: free consultation; 5-year installation warranty; finance mentioned.
Where Hamilton Air Conditioning stands out
A plainly stated 5-year installation warranty and finance options suit homeowners.
Testimonials cover Victorian homes in Hampstead, useful for period properties.
What to consider
No certification bodies or review counts are published.
Best fit
North London homeowners, including period properties.
Website: hamiltonaircon.com
6. Aspect | Best for buyers who want an hourly rate
Overview
Aspect Maintenance Services Limited, trading as Aspect, is a Chessington-based multi-trade company covering all London boroughs. Its AC engineers install, repair and maintain AC and heat pumps, and the firm lists F-Gas via Refcom, BESA, NAPIT, CHAS, ISO 9001 and SafeContractor.
It promises a one-hour emergency response.
Key details
- Core offering: AC installation, repair and maintenance; other trades.
- Coverage: all London boroughs.
- Customer fit: homes, landlords and businesses.
- Pricing and terms: from £63 per half-hour plus VAT, one-hour minimum; 12-month guarantee.
Where Aspect stands out
Its published rate and absorbed parking and ULEZ costs make small jobs easy to price.
Its accreditations suit commercial approval lists.
What to consider
A generalist with a shorter guarantee than specialist installers.
Best fit
Landlords and small businesses that want hourly-rated AC work alongside other trades.
Website: aspect.co.uk
7. ADK Kooling | Best for commercial sites with ventilation needs
Overview
ADK Kooling, which names A-D-K Kooling Ltd, works across Greater London, Kent and Surrey on AC, commercial refrigeration and ventilation. It says it has 15 years’ experience and holds F-Gas, TR19 and VHR credentials.
It is a ProcurePublic framework partner and says projects range up to £500,000.
Key details
- Core offering: AC, refrigeration and ventilation hygiene.
- Coverage: Greater London, Kent and Surrey.
- Customer fit: commercial and public-sector sites.
- Pricing and terms: free survey; quote within 48 hours.
Where ADK Kooling stands out
Ventilation hygiene and refrigeration sit alongside AC.
Framework status helps public-sector buyers.
What to consider
Two addresses and two warranty versions appear on its site.
Best fit
Commercial and public-sector buyers wanting AC with ventilation and refrigeration.
Website: adk.co.uk
How to choose an air conditioning company in London
- Decide what you need over the life of the system, not just the installation.
- Check F-Gas and Refcom credentials on the public registers.
- Compare warranty conditions, especially servicing requirements.
- Ask about emergency cover and how calls are prioritised.
- Get prices in writing for both installation and annual servicing.
Frequently asked questions
How much does air conditioning cost in London?
Be Cool Refrigeration quotes a single wall-mounted unit from around £1,500 including installation, checked 8 October 2026. Larger systems need a survey.
Which AC brand is best?
Daikin, Mitsubishi Electric, Fujitsu and Toshiba are widely fitted. The installer’s experience with a brand and the warranty they can offer matter as much as the brand itself.
Do I need a maintenance contract?
Not always, but many warranties require annual servicing. Commercial systems benefit from two services a year.
Can air conditioning heat my home?
Most modern splits are heat pumps that heat and cool. Be Cool Refrigeration says they deliver three to five times more heat energy than the electricity they use.
The bottom line
For a London home or business that wants installation, repairs and servicing from one company with prices visible upfront, Be Cool Refrigeration is our featured pick. Buyers who value a long trading record should compare The Air Conditioning Company, Daikin buyers AllStar, and those wanting a simple hourly rate Aspect. Get two quotes and check credentials before committing.
