Highly recommended Crystal Sigma installed 2 air conditioner units in our house in London. We cannot be happier with their service and the final product. They were very easy to deal with, we had builders at home and they met with them and agreed on a plan to work together to install the units. Amazing job, thank you!

The service is very satisfactory The service is very satisfactory , finishing the job on time is not

Friendly experts Jason and his colleagues were friendly and knowledgable: they clearly know their business well. Communication was always good

A very professional team of fitters. The fitters arrived on time and worked hard throughout the day, until they were fully satisfied that the unit was working as it should. They were very courteous and ensured that I was happy both with the siting of the unit and the operation of it. They worked very well as a team and afterwards left the room tidy and clean, as it was before. I can highly recommend this company.

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!