We had Abdel and Imran come from Crystal sigma to fix our broken AC units. Not only did they fix them but the service they provided was amazing, everything question we had they explained kindly and p... See more
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We’ve had a contract for 3 years now. The most disorganised and irritating business… arrived unannounced to service the aircon 3 months early and then chasing 30 day invoice payment from the next day,... See more
Company replied
Our ac was broken after they explained what was wrong they cleaned them and they started working without any issues. We’ll make sure to call back for any kind of issues. Very friendly engineers Imran... See more
Samir came up with the ideal solution for my house and Vali and his team did an impeccable job with the install. We were concerned as our house was recently renovated and AC was an afterthought,... See more
Company details
Information provided by various external sources
Cambridge air conditioning Company, air conditioning in Cambridge. Crystal Sigma is air conditioning and Refrigeration Company in London for both domestic and commercial sectors.
Contact info
United Kingdom
- crystalsigma.com
4.4
Excellent
92 reviews
No recent history of asking for reviews
This company hasn't invited customers recently, so reviews may not be representative
Replied to 100% of negative reviews
Typically replies within 24 hours
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Excellent work carried out
Excellent work carried out
Highly competent workers
Cleared up after job finished
1 August 2022
I had a very good experience with…
I had a very good experience with Crystal Sigma. They quoted competitively and offered a quick installation. Their team is very competent and I would recommend them and also use them in the future.
1 August 2022
A very professional company who…
A very professional company who accommodated all my requests which I had asked for. Would certainly be using their services in the near future and would highly recommend them to anyone who wants work done with expertise and promptly.
22 April 2022
Have used these guy's on a number of…
Have used these guy's on a number of occassions for new installs and repairs and found them to be reliable and tidy with their work. Easy to deal with and listen to what your requirements are to achieve a good result and very competitive prices.
19 April 2022
The whole process from quotation to…
The whole process from quotation to installation was handled very efficiently- very pleased with the service provided.
19 April 2022
shafiulkhan96
21 January 2022
Unprompted review
VERY FAST FIXING THE ISSUE
4 October 2021
Unprompted review
Working with Crystal Sigma was an…
Working with Crystal Sigma was an absolute pleasure. They were quick, super efficient and professional. I highly recommend this company.
17 August 2021
Quick response time and engineers were…
Quick response time and engineers were thorough in resolving the issues.
Many thanks.
9 August 2021
Good service great products
9 August 2021
Quick to attend and reasonably priced
3 August 2021
Unacceptable report.
2 August 2021
Unprompted review
reliable and efficient service
2 August 2021
Installed air conditioner…
Installed air conditioner unit-excellent service, neatly done, very professional-good follow up. Would highly recommend Crystal Sigma.
2 August 2021
Efficient and professional service
12 July 2021
This is my third AC which was installed…
This is my third AC which was installed by Crystal Sigma. The installation was carry out with professionalism of the first order and with a five stars all the way.
Serious and very thoughtful work. Wonderful !!!!!!
7 July 2021
Excellent service from Crystal Sigma
We have recently had 2 air conditioning units installed at home and we would recommend Crystal Sigma and their engineers to anyone looking to get an A/C installed in their home.
Both of the engineers we had install our units were very friendly, professional, and knowledgeable. They worked efficiently and tidily and were able to answer all of our questions.
A big thank you to James, David, and the rest of the Crystal Sigma team!
6 July 2021
Great installation service
Samir has been great from the start with the advice and also the installers were great answering any questions I had and made sure I was happy with everything with the installation as they went along and even made sure to be clean while working.
26 May 2021
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