Top 10 Air Conditioning Installers in London
London homes and businesses are increasingly looking at air conditioning because of warmer summers, hybrid working, better bedroom comfort, office productivity and modern systems that can provide both cooling and heating. The UK climate is warming, and the Met Office states that temperature extremes have become more frequent and intense over recent decades, with hotter summer days warming faster than average summer days in some UK areas.
Choosing the right air conditioning installer in London matters because a good installation is not just about fitting an indoor unit on a wall. It involves correct sizing, outdoor unit location, pipe routes, electrical work, condensate drainage, noise control, F-Gas handling, commissioning, servicing and aftercare. This guide compares 10 air conditioning installers in London and explains what homeowners, landlords, flat owners, offices, restaurants, clinics, hotels, schools and small commercial sites should check before booking a survey or quote.
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Quick Answer: Who are the top air conditioning installers in London?
The top air conditioning installers in London worth comparing include Simple Green Energy Ltd, Micro-Climate, Airconcool, NTS Cooling, The Air Conditioning Company, INS Air Conditioning, Centurion Air Conditioning, Whitehouse Services, Air Ref and Masper Build LTD. The right choice depends on your property type, system size, budget, access, outdoor unit location, F-Gas certification, warranty and whether you need domestic, commercial or maintenance support.
How We Chose the Top 10 Installers
This comparison is designed to help readers shortlist air conditioning companies in London, not to declare one installer as the absolute best for every project. London properties vary too much for that. A bedroom AC installation in a Victorian terrace is very different from a VRF system for a hotel, clinic, restaurant or multi-floor office.
We considered:
- London coverage and visibility in the local AC market.
- Domestic and/or commercial air conditioning experience.
- Publicly available service information.
- F-Gas certification or the need for customers to confirm it before booking.
- Survey-led design and system sizing.
- Split, multi-split, ducted, cassette or VRF/VRV capability.
- Maintenance, repair or aftercare support.
- Transparent quotation process.
- Experience with flats, terraces, offices, retail spaces and older buildings.
- Online reputation signals, where visible.
- Whether the installer offers related property energy upgrades.
Readers should still complete their own checks before choosing an installer. Confirm F-Gas certification, insurance, warranty terms, manufacturer training, maintenance support, quote detail and experience with your specific property type.
Top 10 Air Conditioning Installers Comparison Table
| Rank | Installer | Best For | Services | What to Check |
|---|---|---|---|---|
| 1 | Simple Green Energy Ltd | Customers wanting AC alongside wider energy upgrades | Air conditioning advice, renewable heating, solar PV, batteries, EV chargers and energy-efficiency upgrades | Confirm current F-Gas certification, AC brand options, warranty terms and London survey availability |
| 2 | Micro-Climate | Homes, flats and small commercial AC installations | Split AC, wall-mounted systems, central/ducted-style guidance, maintenance and repairs | Confirm current F-Gas certification, warranty cover, survey process and outdoor unit planning advice |
| 3 | Airconcool | London homes and businesses wanting design-led AC | Home AC, commercial AC, maintenance, repairs and custom AC system design | Confirm REFCOM/SafeContractor status, warranty terms, brand options and quote inclusions |
| 4 | NTS Cooling | Commercial refrigeration, AC repair and maintenance | AC design, installation, service, maintenance, repairs, refrigeration and multi-site support | Confirm current domestic/commercial capacity, F-Gas details, response times and service contract terms |
| 5 | The Air Conditioning Company / The Air Conditioning | Domestic and business installations with portable AC options | Fixed AC installation, repairs, maintenance, portable AC sale/hire, free site surveys | Confirm current warranty terms, survey detail, quote scope and system sizing method |
| 6 | INS Air Conditioning | West London and Greater London domestic/commercial projects | Installation, maintenance, repair, single split and VRV/VRF commercial systems | Confirm F-Gas certification, insurance, system design, warranty and aftercare |
| 7 | Centurion Air Conditioning | Commercial clients, contractors and ventilation-linked AC projects | Design, installation, planned maintenance, repairs and ventilation | Confirm project type fit, commercial references, maintenance plans and quote detail |
| 8 | Whitehouse Services | High-end homes, refurbishments and period-property style projects | Air conditioning, cooling, ventilation and project management | Confirm current trading/service details, F-Gas certification, insurance and experience with your property |
| 9 | Air Ref | Refrigeration, ventilation and AC installation | Air conditioning, refrigeration and ventilation | Confirm London coverage, F-Gas certification, brand options, warranty and maintenance support |
| 10 | Masper Build LTD | Customers needing HVAC, heating, cooling and building-services support | HVAC, air conditioning, heating, electrical and renewable energy systems | Confirm AC scope, F-Gas certification, manufacturer training, warranties and aftercare |
Individual Installer Summaries
1. Simple Green Energy Ltd
Simple Green Energy Ltd is a strong option to consider if you want air conditioning as part of a wider property energy upgrade rather than as an isolated cooling purchase. The company publicly presents itself as supporting homes across England and Wales with renewable heating, solar panels, insulation, ventilation and EV chargers, and its website also promotes survey-led property checks before recommending the right system.
For London homeowners, landlords and small commercial property owners, this broader energy focus can be useful if you are comparing air conditioning with solar PV, battery storage, EV charging or renewable heating. It may suit customers who want comfort, efficiency and future-proofing considered together.
Before booking, confirm the company’s current London air conditioning availability, F-Gas certification arrangements, installer insurance, product brands, workmanship warranty, manufacturer warranty and servicing options. For any split, multi-split or heat-pump air conditioning system, refrigerant work must be handled by appropriately qualified F-Gas personnel.
2. Micro-Climate
Micro-Climate is worth comparing for London customers looking at wall-mounted, split, portable or larger HVAC-style air conditioning options. Its public guide explains common AC system types, including split AC units for single rooms or apartments, wall-mounted units for bedrooms and offices, central/ducted-style systems for larger homes and businesses, and portable units for temporary cooling.
The company’s content also covers practical installation stages such as choosing the indoor unit location, connecting refrigerant lines and wiring, positioning the outdoor compressor and testing the system. It discusses cost variables such as unit type, installation complexity and labour.
Micro-Climate may suit homeowners, flat owners and smaller businesses who want a straightforward comparison between split, wall-mounted and more involved AC systems. Before booking, check current F-Gas certification, survey depth, noise guidance, planning advice, brand options, warranty terms and whether the quote includes electrical work, condensate drainage, pipework containment and commissioning.
3. Airconcool
Airconcool appears to focus specifically on air conditioning installation services in London, with public service pages for home air conditioning, commercial air conditioning and maintenance. Its website states that it offers custom AC system design and that the team will attend the property to design a suitable system. It also publicly references REFCOM and SafeContractor certification, which customers should still verify directly before booking.
This type of installer may suit homeowners, flat owners and businesses that want a dedicated air conditioning company rather than a general builder or electrician. It may be especially relevant where system design, brand choice, warranty length and aftercare are important.
When comparing Airconcool, ask whether the quote includes heat-load sizing, indoor and outdoor unit positioning, pipe route details, condensate drainage, electrical supply requirements, commissioning, warranty documents and servicing options. Also check whether the installer has completed similar projects in London flats, terraces, offices or commercial premises.
4. NTS Cooling
NTS Cooling is worth comparing if your project involves both air conditioning and refrigeration, especially for commercial premises. Its public website describes the company as providing design, installation, service, maintenance and repair for air conditioning systems, commercial refrigeration, cold rooms, freezer rooms and multi-site maintenance support. It also publicly describes itself as F-Gas certified.
This may make NTS Cooling a practical option for restaurants, cafés, food businesses, clinics, shops, offices and landlords who need service response as well as installation. The refrigeration angle may be useful for businesses where comfort cooling and cold storage both matter.
Before booking, confirm whether your job is within their preferred domestic or commercial scope, whether emergency repairs are available in your area, what their maintenance contracts include, and whether warranty cover depends on regular servicing. Ask for clear evidence of F-Gas qualifications, insurance and experience with your specific system type.
5. The Air Conditioning Company
The Air Conditioning Company is a well-known London-focused AC business worth comparing for both domestic and commercial projects. Its website lists home air conditioning options for bedrooms, lounges, conservatories and loft conversions, alongside business installations for offices, server rooms, shops, restaurants, healthcare premises and schools. It also lists repair and maintenance services, plus portable air conditioner sale and hire.
The company says it offers free site surveys for installations and explains that correct sizing is important because underpowered systems can perform poorly. This makes it relevant for customers who want to compare fixed systems against portable or temporary cooling options.
Before booking, verify current warranty terms, F-Gas credentials, insurance, survey availability, lead times and quote detail. If your project is in a flat, listed building, conservation area or commercial leasehold premises, ask how they handle permissions, outdoor unit visibility, access and noise concerns.
6. INS Air Conditioning
INS Air Conditioning appears to be a West London-based air conditioning company serving Greater London. Its website states that it provides professional installation, maintenance and repair services and that its engineers are F-Gas certified. It also says the company works with system types from single split units to large VRV/VRF commercial systems.
This makes INS Air Conditioning worth comparing for both smaller domestic jobs and more complex commercial installations. It may suit homeowners looking for single-room cooling, landlords needing maintenance, or businesses comparing VRF/VRV solutions for larger spaces.
Before booking, ask for confirmation of F-Gas certification, insurance documents, warranty terms, brand recommendations, pipe route planning and aftercare. For commercial sites, ask whether the quote includes controls, zoning, condensate pumps, access equipment, out-of-hours work, maintenance schedules and any coordination with landlords or building managers.
7. Centurion Air Conditioning
Centurion Air Conditioning is worth comparing for customers who need air conditioning alongside ventilation, planned maintenance or commercial project support. Its public website states that the company specialises in the design, installation, planned maintenance and repair of air conditioning and ventilation systems.
Centurion may be a good fit for main contractors, property managers, commercial landlords, offices, retail sites and end users who want ongoing maintenance rather than a one-off domestic installation only. It may also suit projects where ventilation and comfort cooling need to be considered together.
Before booking, check whether the company is the right fit for your project size and property type. Ask for F-Gas evidence, insurance, recent similar project examples, maintenance package details, warranty cover, manufacturer training and whether the quote includes commissioning certificates, controls, access requirements and post-installation support.
8. Whitehouse Services
Whitehouse Services appears in London air conditioning directory material as a company associated with air conditioning, cooling, ventilation and project management for higher-end London and South East properties. The directory listing references work alongside specialist builders and period-property refurbishment contexts, but customers should verify current service details directly before relying on that information.
This type of installer may suit homeowners, estate managers, landlords or property professionals working on premium residential refurbishments, period buildings or discreet cooling projects where appearance, access and coordination with builders matter.
Before booking, check the company’s current trading name, F-Gas certification, insurance, project management process, building-services capability, previous similar work and whether they handle permissions in flats, conservation areas or listed-property settings. Also confirm the proposed AC system type, brand, warranty, maintenance plan and how outdoor units, pipework and drainage will be made discreet.
9. Air Ref
Air Ref is worth comparing for customers who need air conditioning, refrigeration and ventilation support. Its website states that Air Ref Ltd specialises in air conditioning, refrigeration and ventilation and was established in 1992.
This may make Air Ref suitable for commercial properties, restaurants, retail sites, offices, light industrial spaces or customers who want cooling and refrigeration expertise under one supplier. It may also suit larger homes or mixed-use properties where ventilation and system design need careful thought.
Before booking, confirm London coverage, current F-Gas certification, insurance, brand options, system sizing method, warranty terms and maintenance support. If your site has specialist requirements, such as refrigeration, server-room cooling, ducted systems or multiple indoor units, ask for a written design proposal showing equipment sizes, controls, pipe routes, electrical requirements, condensate drainage and access assumptions.
10. Masper Build LTD
Masper Build LTD is worth comparing if you need air conditioning as part of a wider mechanical, electrical, heating or building-services project. Its website presents the company as specialising in heating, ventilation and air conditioning, and its public contact details place it in Notting Hill, London. The company also appears on Daikin’s dealer locator under air conditioning and heating, which customers can use as one verification point before booking.
This may suit homeowners, landlords, offices and commercial clients who need coordination between AC, heating, electrics, ventilation and general property works. It may be especially useful where the installation is part of a refurbishment or commercial fit-out.
Before booking, confirm the exact AC services offered, F-Gas certification, manufacturer training, public liability insurance, workmanship warranty, product warranty and aftercare process. Ask whether the quote includes all enabling works, access equipment, electrical alterations, condensate drainage and commissioning.
Why London Properties Need Careful AC Design
Air conditioning installation in London needs more care than a simple “supply and fit” quote. Many properties are flats, leasehold homes, converted terraces, period buildings, commercial units or mixed-use premises. Outdoor units may need to be placed on rear walls, balconies, flat roofs, lightwells, courtyards or plant areas, and each option can affect noise, access, appearance and permissions.
Key London-specific considerations include:
- Flats and leasehold permissions: You may need approval from a landlord, freeholder, managing agent or residents’ management company.
- Conservation areas: Outdoor equipment may be more sensitive if visible from the street or affecting the character of a property.
- Listed buildings: Listed building consent or planning advice may be needed before any external alteration.
- Outdoor unit placement: Units need adequate airflow, safe access and a location that does not cause unreasonable noise or visual impact.
- Noise and neighbours: London homes are often close together, so acoustic performance and anti-vibration mounting matter.
- Limited space: Terraces, flats and small gardens may restrict outdoor unit options.
- Long pipe runs: Longer refrigerant routes can increase cost and reduce suitability if not designed correctly.
- Condensate drainage: The installer must safely route water from indoor units to a drain or pump system.
- Access issues: Scaffolding, roof access or specialist lifting may increase cost.
- Commercial landlord approvals: Offices, restaurants, clinics, shops and hotels often need landlord or building-manager consent.
- Business comfort needs: Retail, hospitality, healthcare, schools and offices need systems designed around occupancy, opening hours, heat gains, ventilation and customer comfort.
The London Plan’s heat-risk policy uses a cooling hierarchy that prioritises reducing heat gains and using passive measures before relying on active cooling, especially for new developments. That does not mean air conditioning is banned, but it does mean London projects should consider shading, ventilation, controls, system efficiency and responsible design.
Types of Air Conditioning Systems in London
| System Type | Best For | Pros | Things to Consider |
|---|---|---|---|
| Single-room wall-mounted split system | Bedrooms, home offices, lounges and garden rooms | Efficient, quiet, permanent solution, often provides heating and cooling | Needs outdoor unit, refrigerant pipework, electrics and F-Gas installation |
| Multi-split system | Two or more rooms where one outdoor unit is preferred | Multiple indoor units connected to one outdoor unit, good for flats and homes with limited outside space | More complex design, higher cost, pipe routes need careful planning |
| Ducted air conditioning | Premium homes, hotels, offices and discreet installations | Hidden grilles, neat finish, good for multi-room comfort | Needs ceiling voids, loft space or design integration |
| VRF/VRV system | Larger commercial buildings, hotels, offices and multi-zone sites | Scalable, zoned control, suitable for multiple rooms and floors | Requires specialist design, controls, commissioning and maintenance |
| Ceiling cassette system | Offices, shops, restaurants, clinics and commercial units | Good air distribution, fits suspended ceilings | Needs ceiling void, condensate drainage and suitable access |
| Floor-mounted system | Rooms with limited high wall space, loft rooms or conservatories | Easier placement where wall units are unsuitable | Takes floor/wall space and must be positioned for airflow |
| Portable air conditioner | Renters, temporary cooling or short-term commercial needs | No fixed installation, lower upfront cost, movable | Less efficient, noisier, needs exhaust hose, not ideal as permanent cooling |
| Heat pump air conditioning for heating and cooling | Homes and businesses wanting year-round comfort | Can cool in summer and heat in winter using one system | Planning and permitted development rules may depend on unit type, property and location |
Air Conditioning Installation Cost in London
Air conditioning cost in London depends on property type, system size, brand, access, pipe length, outdoor unit location, electrics, condensate drainage, scaffolding, controls and whether it is a domestic or commercial installation. Checkatrade’s 2026 guide says a 12,000 BTU wall-mounted unit may cost around £620–£890 for materials, with installation labour averaging around £960–£1,380 on top, while its London installation page highlights complexity, number of rooms, access and city labour rates as cost factors.
The figures below are cautious guide ranges only. A survey is needed for accurate pricing.
| System Type | Typical Use | Possible Cost Range | Notes |
|---|---|---|---|
| Single-room split system | Bedroom, home office, lounge or garden room | £1,500–£3,500 | Standard installs cost less; long pipe runs, premium brands, difficult access or electrical upgrades increase cost |
| Two-room multi-split | Two bedrooms, bedroom plus lounge, small flat | £3,000–£6,500 | One outdoor unit serving two indoor units; design and pipe route are key |
| Three to four-room multi-split | Larger flats, terraced homes or family homes | £5,000–£10,000+ | Cost depends on indoor unit count, pipe length, controls and outdoor unit location |
| Ducted system | Premium homes, hotels or discreet multi-room cooling | £6,000–£15,000+ | Needs ceiling voids, loft access or refurbishment-stage design |
| Commercial cassette system | Office, shop, restaurant, clinic or classroom zone | £2,500–£6,000+ per zone | Suspended ceiling access, drainage and landlord approval are common considerations |
| VRF/VRV system | Large offices, hotels, clinics, schools or multi-floor sites | £10,000–£50,000+ | Requires specialist design, controls, commissioning and maintenance planning |
| Maintenance/service visit | Domestic or commercial AC servicing | £90–£250+ domestic; commercial by quotation | Price depends on number of units, access, filters, refrigerant checks and service contract scope |
What to Check Before Choosing an AC Installer
Before choosing an air conditioning installer in London, use this checklist:
- Are they F-Gas certified? GOV.UK states that people working on equipment containing F-Gas must have the correct qualifications, and working without them is against the law.
- Do they carry insurance? Ask for public liability and, where relevant, employer’s liability cover.
- Do they complete a proper heat-load calculation? The system should be sized for the room, glazing, insulation, orientation and occupancy.
- Do they explain outdoor unit positioning? This affects noise, airflow, planning risk and maintenance access.
- Do they consider noise and planning issues? Especially in flats, terraces, conservation areas and commercial premises.
- Do they provide a written quote? It should include equipment, pipework, electrics, drainage, controls, commissioning and VAT treatment.
- Are warranties clear? Ask what is manufacturer warranty, what is workmanship warranty and what servicing is required to keep cover valid.
- Do they offer servicing and maintenance? Regular servicing helps performance, hygiene and warranty compliance.
- Are the engineers experienced with your property type? London flats, older houses, shops and restaurants all have different requirements.
- Do they explain running costs and controls? Efficient use depends on room zoning, set temperatures, timers and maintenance.
- Do they install reputable brands? Ask why they recommend a specific brand and model.
- Do they provide aftercare? Make sure you know who to contact if the system leaks, stops cooling, becomes noisy or needs servicing.
Domestic vs Commercial Air Conditioning in London
Domestic and commercial air conditioning are related, but the design priorities are often different.
Domestic air conditioning usually focuses on comfort, quiet operation and discreet installation. Common locations include bedrooms, loft conversions, garden rooms, living rooms, flats and terraced homes. Homeowners usually care about sleep comfort, summer overheating, home working, appearance, running cost and whether the system can also provide efficient heating in colder months.
Commercial air conditioning must account for occupancy, opening hours, internal heat gains, customer comfort, staff comfort, maintenance access and business disruption. Common settings include offices, restaurants, clinics, retail shops, hotels, schools, server rooms and gyms. Commercial sites may need ceiling cassettes, ducted systems, VRF/VRV, service contracts, out-of-hours installation and landlord approvals.
A good London AC installer should ask different questions for a bedroom than for a restaurant kitchen, hotel corridor, clinic reception or server room. The quote should reflect the building use, not just the size of the room.
Planning Permission and Permissions in London
Some air conditioning installations may be covered by permitted development, especially where the system is classed and installed as an air source heat pump and meets the required limits and conditions. The Planning Portal states that air source heat pump installations on domestic premises can be permitted development if all limits and conditions are met, including requirements around standards, outdoor unit size and whether it is the first installation.
However, London projects often need extra care. Flats, leasehold homes, listed buildings, conservation areas, converted properties and commercial premises may need landlord, freeholder, managing agent or council approval. Outdoor unit noise, appearance, height, visibility and placement can also affect permission.
Do not assume every AC installation is automatically allowed. Before committing, ask your installer to explain the permission route and check with your local council, landlord, freeholder or managing agent where relevant. This section is practical guidance only and should not be treated as legal advice.
Best Areas Covered by London AC Installers
Most established air conditioning companies in London cover a wide range of boroughs and surrounding areas, although availability varies by installer, project size and season. Areas commonly served include Central London, Westminster, Kensington, Chelsea, Camden, Islington, Hackney, Hammersmith, Fulham, Ealing, Brent, Harrow, Barnet, Enfield, Haringey, Wandsworth, Lambeth, Southwark, Lewisham, Greenwich, Croydon, Bromley, Bexley, Richmond, Kingston, Sutton, Merton, Hillingdon, Hounslow, Redbridge, Newham, Tower Hamlets, the City of London and nearby Home Counties locations.
For the best result, choose an installer who regularly works with your property type and area. A company used to central London flats may be better at handling leasehold permissions and discreet outdoor unit locations, while a commercial AC contractor may be better suited to offices, restaurants, clinics, retail units, hotels and schools.
Best Installer by Need
| Customer Need | Best Type of Installer to Look For | Why |
|---|---|---|
| Bedroom AC | Domestic split-system installer | Quiet indoor unit, careful sizing and neat pipe route matter most |
| Flat or apartment AC | Installer experienced with leasehold properties | Permissions, outdoor unit placement, noise and access are often more complicated |
| Office AC | Commercial AC installer | Offices need zoning, controls, maintenance access and minimal disruption |
| Restaurant or retail AC | Commercial HVAC/refrigeration-aware installer | Heat gains, opening hours, customer comfort and service response are important |
| Large commercial site | VRF/VRV specialist | Larger systems need design, controls, commissioning and planned maintenance |
| Quiet system | Installer with acoustic design experience | Outdoor unit location, anti-vibration mounts and low-noise models matter |
| Budget installation | Transparent domestic AC installer | Compare like-for-like quotes and avoid missing items such as electrics or drainage |
| Premium hidden/ducted system | Ducted AC or refurbishment-stage specialist | Requires ceiling voids, design coordination and discreet grilles |
| Maintenance and repair | Installer offering servicing and reactive support | Good aftercare helps prevent breakdowns and protect warranties |
| Solar or energy-efficiency upgrade alongside AC | Energy-upgrade installer such as Simple Green Energy Ltd | Solar PV, batteries, EV chargers and heating upgrades can be reviewed alongside comfort cooling |
Simple Green Energy Ltd CTA
If you are comparing air conditioning installers in London, Simple Green Energy Ltd can help you assess your property, understand your comfort needs and compare practical options for cooling, heating and wider energy upgrades.
Simple Green Energy Ltd is particularly relevant if you want air conditioning considered alongside solar PV, battery storage, EV chargers, renewable heating or wider property efficiency improvements. A survey-led approach can help you understand system size, installation suitability, running costs, budget and whether AC should be part of a broader plan for your home, rental property or commercial premises.
Before proceeding with any AC installation, customers should confirm current F-Gas certification, insurance, manufacturer warranty, workmanship warranty, maintenance support and whether the proposed system is suitable for their London property.
Frequently asked questions (FAQs)
Simple answers to common questions about air conditioning installers in London, including installation costs, planning permission, flats, F-Gas certification, servicing and comparing quotes. Speak to Simple Green Energy.
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Get AC installation adviceFinal Summary / Conclusion
Finding the right air conditioning installer in London is about more than choosing the cheapest quote or the closest company. A reliable installer should understand system sizing, F-Gas compliance, outdoor unit placement, noise, planning risk, electrics, drainage, controls, warranties and maintenance.
For a single bedroom, a quiet wall-mounted split system may be enough. For flats, leasehold properties and older terraces, permissions and outdoor unit location may be the biggest challenge. For offices, restaurants, clinics, hotels, shops and schools, commercial design, zoning, servicing and downtime planning matter more.
Use this shortlist as a starting point, then compare at least two or three survey-led quotes. Ask direct questions, verify certification and insurance, and make sure the proposed system suits your property, budget and long-term comfort needs.
