Top 10 Air Conditioning Installers in England and Wales 2026
Finding a reliable air conditioning installer can make a real difference to the comfort, efficiency and long-term performance of your system. With so many UK companies offering cooling, heating, ventilation and air-to-air heat pump services in 2026, it helps to know which installers are worth considering before booking a proper home survey.
In this guide, we rank the top 10 air conditioning installers in England and Wales, highlight what each company is best suited for, and explain the key checks to make before choosing one. Whether you need one room cooled or a whole-home system, this list will help you compare your options with more confidence.
Quick answer: Best air conditioning installers in England and Wales
The best air conditioning installers in England and Wales combine proper F-Gas certification, clear pricing, reliable product choice, strong customer reviews, tidy installation and aftercare support.
| Rank | Installer | Best for | Website |
|---|---|---|---|
| 1 | Simple Green Energy | Energy-efficient cooling, heating and ventilation upgrades | Visit Website |
| 2 | BOXT | Fast online quotes and fixed-price AC installation | Visit Website |
| 3 | Glow Green | National air conditioning installation | Visit Website |
| 4 | The Air Conditioning Company | Specialist AC installation and maintenance | Visit Website |
| 5 | A.C. Wilgar Plumbing, Heating & Cooling | High-review heating and cooling services | Visit Website |
| 6 | OVO Solar & Heating | Local AC specialists backed by a national brand | Visit Website |
| 7 | Infinity Air | East of England and London installations | Visit Website |
| 8 | Blue Mountain Air Conditioning | South Wales and South West AC projects | Visit Website |
| 9 | Cool 365 | London air conditioning and ventilation | Visit Website |
| 10 | Wales Air Conditioning | Cardiff, Swansea, Newport and South Wales coverage | Visit Website |
1. Simple Green Energy
Best for: Energy-efficient cooling, heating and ventilation upgrades.
Simple Green Energy takes the top spot for homeowners looking beyond basic cooling. The company is well suited to customers who want air conditioning as part of a wider home comfort and energy-efficiency plan, especially where heating, solar, ventilation, insulation or low-carbon upgrades are also being considered.
Its service range makes it a strong choice for households that want joined-up advice rather than a single-product recommendation. This is useful for homes where cooling performance, indoor air quality and long-term running costs all matter.
Why it stands out
- Strong fit for whole-home energy efficiency planning
- Covers cooling, heating, solar, insulation, ventilation and low-carbon upgrades
- Useful for homes needing better comfort and indoor air quality
- Good option for customers comparing AC with air-to-air heat pump systems
- Suitable for survey-led home improvement recommendations
2. BOXT
Best for: Fast online quotes and fixed-price AC installation.
BOXT is a strong choice for homeowners who want a simple online journey. The company is known for making home upgrades easier to price, book and manage, with a digital process that suits customers who want speed and clarity before committing to an installation.
Its air conditioning service is especially useful for straightforward domestic projects where customers want a clear quote, recognised products and a smooth booking process.
Why it stands out
- Fast online quote journey
- Simple booking process
- Strong national coverage
- Air conditioning, boilers, solar, batteries and heat pumps available
- Good for homeowners who want a quick and structured installation route
3. Glow Green
Best for: National air conditioning installation.
Glow Green is a well-known national installer offering air conditioning alongside other home energy products such as heat pumps, solar panels and boilers. It is a good option for homeowners who want a large provider with wide coverage, recognised AC brands and structured customer support.
Glow Green remains one of the strongest names in the market, especially for customers who want a national company with experience delivering air conditioning installations at scale.
Why it stands out
- National installer coverage
- Recognised AC brand options
- Air conditioning, heat pumps, boilers and solar under one provider
- Good fit for homeowners wanting a packaged service
- Strong public review presence
4. The Air Conditioning Company
Best for: Specialist AC installation and maintenance.
The Air Conditioning Company is one of the better-known specialist installers for air conditioning systems. Its own review page highlights Google and Trustpilot reviews, while Trustpilot shows recent customer feedback praising installation quality, advice and professionalism.
The attached reference blog ranked The Air Conditioning Company as one of the top UK air conditioning installers and described it as a long-established cooling specialist offering installation, servicing and maintenance for homes and businesses.
Why it stands out
- Specialist air conditioning focus
- Domestic and commercial experience
- Installation, servicing and maintenance
- Good for customers who want AC-focused advice rather than a general home upgrade provider
5. A.C. Wilgar Plumbing, Heating & Cooling
Best for: High-review heating and cooling services.
A.C. Wilgar is a well-established heating and cooling company with a strong public review profile. Trustpilot shows thousands of reviews and a high star rating, with recent customer feedback mentioning communication, helpful engineers and efficient work.
The attached reference blog ranked A.C. Wilgar third in its air conditioning installer list and highlighted its professional service, careful planning and strong customer feedback.
Why it stands out
- Strong review volume
- Heating and cooling experience
- Suitable for homes needing more than a basic AC installation
- Good fit for customers who value communication and tidy workmanship
6. OVO Solar & Heating
Best for: Local AC specialists backed by a national brand.
OVO Solar & Heating offers air conditioning installation through local specialists, with design, paperwork and installation support backed by OVO. Its AC installation page says customers do not need to be OVO energy customers to use the service.
OVO’s 2026 air conditioning cost guide says UK installation typically ranges from £1,500 to £3,500 for a single room and £4,000 to £10,000 for a whole-home system, depending on the system, number of rooms, layout and electrical work required.
Why it stands out
- Backed by a national energy brand
- Local specialist installation model
- Clear cost guidance
- Good for homeowners who want an established brand behind the work
7. Infinity Air
Best for: East of England and London installations.
Infinity Air installs, services and maintains air conditioning systems across the East of England and London. Its website says it covers Essex, Suffolk, Norfolk, Hertfordshire and London for homes and offices.
The company also says it is certified by REFCOM for air conditioning gas safety.
Why it stands out
- Strong regional coverage
- Residential and commercial AC work
- Installation, repairs, maintenance and servicing
- Good fit for homeowners in London and the East of England
8. Blue Mountain Air Conditioning
Best for: South Wales and South West AC projects.
Blue Mountain Air Conditioning provides AC installation, repair and maintenance for homes and businesses across South Wales and the South West of England. Its website says the company works on domestic, commercial and industrial premises.
The company’s Cardiff air conditioning page also lists REFCOM F-Gas certification and domestic installation options.
Why it stands out
- Strong Wales coverage
- Domestic and commercial AC services
- Installation, repair and maintenance
- Useful for Cardiff, South Wales and South West projects
9. Cool 365
Best for: London air conditioning and ventilation.
Cool 365 is a London-based installer offering air conditioning, MVHR and ventilation installation services. The company says it has been operating since 2011 and offers an end-to-end service across London and surrounding areas.
Why it stands out
- London-focused service
- Air conditioning and ventilation options
- Useful for homes that need cooling plus airflow improvements
- Good for customers who want a local London specialist
10. Wales Air Conditioning
Best for: Cardiff, Swansea, Newport and South Wales coverage.
Wales Air Conditioning offers air conditioning repairs and installations across Cardiff, Swansea, Newport and South Wales. Its website lists home air conditioning among its services and says it can supply and install air conditioning products.
For homeowners in Wales, a local specialist can be useful because planning, property type and installation routes may differ from one area to another.
Why it stands out
- South Wales coverage
- Home air conditioning services
- Supply and installation options
- Good for customers looking for a Wales-based AC installer
How we chose these air conditioning installers
We looked at the factors that matter most when choosing an air conditioning installer in England and Wales.
| Factor | Why it matters |
|---|---|
| AC installation experience | Air conditioning needs correct system sizing, pipework, electrical work and refrigerant handling |
| REFCOM / F-Gas compliance | Companies handling air conditioning refrigerants must meet legal certification rules |
| Service coverage | We included national, England-focused, Wales-focused and regional installers |
| Product range | Installers offering Daikin, Mitsubishi, Samsung, Hitachi, Bosch or similar recognised brands were prioritised |
| Customer feedback | Review volume, recent feedback and service consistency were considered |
| Aftercare | Servicing, maintenance and warranty support matter after installation |
| Quote clarity | A good quote should explain the system, installation, electrical work, warranties and ongoing costs |
GOV.UK says companies, including sole traders, must be certified by an approved body to service stationary equipment containing F-Gas, including air conditioning and refrigeration systems.
REFCOM also states that companies working on installation, servicing, maintenance, repair or decommissioning of stationary refrigeration, air conditioning or heat pump systems must be registered with REFCOM or an equivalent registration body, as well as holding the right individual F-Gas qualifications.
How to choose the right air conditioning installer
1. Check F-Gas and REFCOM certification
Do this before comparing prices. Air conditioning systems use refrigerants, so the company and engineers need the right certification. A proper installer should be able to show certification without hesitation.
2. Ask for a room-by-room recommendation
A good installer should not guess the unit size. They should consider room size, insulation, glazing, sunlight, ceiling height, room use and where the indoor and outdoor units will sit.
3. Compare the full quote, not just the headline price
A proper quote should show:
| Quote detail | What to check |
|---|---|
| Indoor unit | Brand, model and capacity |
| Outdoor unit | Position, noise level and access |
| Pipework | Route, boxing-in and finish |
| Electrical work | Whether a new circuit is needed |
| Warranty | Product and workmanship cover |
| Servicing | Maintenance options and expected costs |
| Controls | Remote, app control or smart functions |
| Removal | Whether old units or waste are included |
4. Check planning and property restrictions
The UK Government confirmed in June 2026 that air conditioning can be installed in existing and new homes, and that planning permission is not required in most cases for a small home where the installation would not materially affect the outside appearance of the building.
That said, rules can be different for flats, leasehold homes, listed buildings and conservation areas. In Wales, the Welsh Government advises checking with the local council if a property is listed or in a conservation area when considering heat pump-style systems.
5. Look at aftercare before booking
Air conditioning systems need maintenance to keep them efficient. Ask who handles servicing, what the warranty requires, and how quickly the company responds if something goes wrong.
6. Avoid pressure selling
Be careful with “today only” discounts, unclear product models, vague warranty wording or companies that will not show certification. A reputable installer should give you time to compare quotes.
Best installer by need
| Your priority | Best-fit installers from this list |
|---|---|
| National installation | Glow Green, BOXT, OVO |
| Fast online quote | BOXT |
| Energy-efficient home upgrade route | Simple Green Energy |
| Specialist AC company | The Air Conditioning Company |
| High-review heating and cooling provider | A.C. Wilgar |
| London and East England | Infinity Air, Cool 365 |
| South Wales | Blue Mountain Air Conditioning, Wales Air Conditioning |
| Multi-product home comfort upgrade | Glow Green, Simple Green Energy, BOXT |
Frequently asked questions (FAQs)
Simple answers to common questions about choosing air conditioning installers in England and Wales, including national and local options, F-Gas certification, planning permission, costs and installation times. Speak to Simple Green Energy.
Need help choosing an air conditioning installer?
Speak with Simple Green Energy about air conditioning installation, home cooling options and wider energy-efficiency upgrades for your property.
Get air conditioning adviceFinal takeaway
The best air conditioning installer depends on where you live, how many rooms you want to cool, your budget, your property type and whether you want cooling only or heating and cooling from one system.
For a national AC installer, Glow Green is a strong first choice. For a fast online journey, BOXT is worth comparing. For energy-efficient cooling, heating and ventilation upgrades, Simple Green Energy earns the number three spot.
Before booking, check F-Gas certification, ask for a proper survey, compare at least two or three quotes and make sure the system is designed around your home — not just the cheapest unit available.
