CJS Air Conditioning Ltd Reviews 43

TrustScore 5 out of 5

4.8

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Rated 5 out of 5 stars

We have used CJS for installation of ACs twice over the last 5 years. On both occasions they did the work efficiently and very professionally. Chris is an excellent engineer, courteous and very compet... See more

Rated 5 out of 5 stars

Very pleased I chose CJS to supply and fit the units . Price was competitive and the service was very good . Excellent communication throughout . Fitting was efficient. Would recommend .

Rated 5 out of 5 stars

Chris fitted my first ac unit about 5 years ago he is very nice did a wonderful job tidied up after so happy with the unit we have just had to more fitted great job done would recommend him every year... See more

Company details

  1. Air Conditioning System Supplier
  2. Air Conditioning Contractor
  3. Air Conditioning Repair Service
  4. Construction Company
  5. Heating Equipment Supplier

Written by the company

CJS Air Conditioning is a fully F Gas registered and City & Guilds qualified family run business, with over 15 years’ experience in the trade. We specialise in Installation, Service/Maintenance, Breakdowns & Repairs covering all aspects of domestic and commercial Air Conditioning. Located in North West London, we are happy to service the whole of London's M25 plus surrounding counties, including Buckinghamshire, Hertfordshire, Middlesex and Essex. Working with all the leading manufacturers such as Daikin, Mitsubishi, Fujitsu, Mitsubishi Heavy etc. Our team specialise in all Installations including - • Garden/Summer Houses • Bedroom/study • Living/Dining • Loft conversion • Shops • Offices As a tight-knit family business, you are guaranteed competitive rates as well as a friendly, professional and exceptionally clean service. Something we pride ourselves on. We are also happy to offer a full 7-year warranty on all installations subject to service agreements. We enjoy educating our customers with information such as how efficient AC units are for heating and cooling purposes not just for ourselves but for the planet to. For any more information and an extensive breakdown of the quality services we provide, get in touch today to discuss your needs with a member of the CJS team.


Contact info

4.8

Excellent

TrustScore 5 out of 5

43 reviews

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Rated 5 out of 5 stars

Great job - very pleased .

Very pleased I chose CJS to supply and fit the units . Price was competitive and the service was very good . Excellent communication throughout . Fitting was efficient. Would recommend .

April 23, 2026
Unprompted review
Rated 5 out of 5 stars

Ac unit installed

Chris fitted my first ac unit about 5 years ago he is very nice did a wonderful job tidied up after so happy with the unit we have just had to more fitted great job done would recommend him every year Sarah contacts me to do a service fantastic company

April 17, 2026
Unprompted review
Rated 5 out of 5 stars

Highly professional and Effecient

We have used CJS for installation of ACs twice over the last 5 years. On both occasions they did the work efficiently and very professionally. Chris is an excellent engineer, courteous and very competent. The price has always been reasonable and never any surprises. Highly recommended!

April 10, 2026
Unprompted review
Rated 5 out of 5 stars

Very satisfied.

They installed Daikin aircon in one bedroom. All done in one day no mess no problems. They are a very friendly and efficient company.
Great service.

September 17, 2025
Unprompted review
Rated 5 out of 5 stars

CJS installed a Mitsubishi Split System…

CJS installed a Mitsubishi Split System for my very hot office garden. The order workflow was simple from start to finish. They done an excellent job and I plan to use them again for a system in the main house. Neat tidy install very happy

July 29, 2025
Unprompted review
Rated 5 out of 5 stars

Great job.

Chris and the team installed 2 Air-Con units at our office which are working really well. They were really efficient and tidy in their work. All in all, good service, very helpful and friendly.

June 17, 2025
Unprompted review
Rated 5 out of 5 stars

Wonderful service from start to finish

Wonderful service from start to finish. Chris is very knowledgable and super friendly. The job was done perfectly and have already recommended to family and friends. Sarah was always super helpful and a pleasure to liase with over email. 10/10.

May 6, 2025
Unprompted review
Rated 5 out of 5 stars

Very competitively priced

Very competitively priced, fantastic service - certainly happy with the product. Would highly recommend them to anyone wanting Aircon.

October 1, 2024
Unprompted review
Rated 5 out of 5 stars

First rate service from CJS Ltd.

My initial enquiry was reacted to promptly with a site visit by the contracts manager. He listened to my requirements and gave be a choice of options, supported the following day with concise quotations from different manufacturers. Refreshing. Not to be sold what suited the supplier as I had found elsewhere.

We agreed a price, an installation date and time. Those parameters were met. No buts. No additions. No surprises. The engineers were pleasant, helpful, efficient and tidy in their work. They were met on site by the contracts manager at the start of work. Great news! Sales and Production talk to each other and the installation proceeded exactly as planned.

I was delighted with the result. The engineers left me having made sure I understood the unit’s operation and with a promise of back-up should it be needed.

I really couldn’t have asked for a better experience.

September 5, 2024
Unprompted review
Rated 5 out of 5 stars

Great job!

Chris really listened and took on board my requirements. Great communication beforehand and the work was done efficiently and very neatly. Truly professional, hard working and genuine team who care about their workmanship putting the customer first. Great experience!

April 23, 2024
Unprompted review
Rated 5 out of 5 stars

Good service from CJS

Been in touch with Chris re AirCon since Covid and finally took the plunge. Glad i did so as has been worth it, so far. Any niggles we've had to date have been dealt with swiftly. All in all a good service received.

May 18, 2023
Unprompted review
Rated 5 out of 5 stars

Recently had 2 Daikin aircon units…

Recently had 2 Daikin aircon units fitted, and Chris & Ben were superb! Chris did an initial survey, communication from Sarah was always excellent and the days fitting were stress free and professionally done.
Delighted that going forward Chris will manage the servicing.
Great company who I thoroughly recommend!

May 19, 2023
Unprompted review
Rated 5 out of 5 stars

Couldn’t Be Happier

Recently had full air conditioning installed by CJS air conditioning, fabulous service all round, very clean and efficient, couldn’t be happier with the end result. Chris is a lovely guy and I felt very comfortable having him working in my home. Highly recommended to anyone wishing to make the ever more frequent heat waves a little more bearable.

April 24, 2023
Unprompted review
Rated 5 out of 5 stars

Nice work Chris/CJS

Had an AC unit fitted in the bedroom in Jan and Chris and Team did an excellent job. From quoting to fitting the service was professional and seamless. I would recommend Chris/CJS for future work. Keep up the good work

January 6, 2023
Unprompted review
Rated 5 out of 5 stars

Absolutely brilliant service by Chris…

Absolutely brilliant service by Chris from start to finish, three internal and two external air con units fitted exactly as planned. A neat, clean, professional stress-free installation.
The Panasonic units look stylish and are very quiet in their operation.

I highly recommend CJS Air Conditioning Ltd if you are looking to fit AC units.

October 6, 2022
Unprompted review

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