Very clean install in newly refurbished house 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, but Samir and Vali fit the system in a very clean and discreet way. We thought an AC install would be a large project and cause a lot of disruption but that was not the case with CS - highly recommended.

Excellent job by a professional team Excellent job and done on time and a good price. Any issues resolved quicky without impacting rest of the operation. Will use Crystal Sigma for future installations and also the maintenance contract is a must. Good job, well-done team. Happy customer. Definitely would recommend.

Professional with a personal touch from… Professional with a personal touch from start to finish. The team explained everything clearly and enabled us to make the best decision for our property. They managed to squeeze installation in around a busy schedule at short notice. We have a newborn and we’re very worried about the heat in our bedroom - the engineers stayed beyond the end of their shift to make sure it was up and running. Essentially Crystal went above and beyond to help us out, and we are very grateful. I highly recommend them, and will do so to all my friends and family.

Excellent firm from start to finish Excellent firm from start to finish. The job wasn’t as straight forward as we would have wished but the guys at Crystal Sigma found us the right solutions to make it works. I found them to be professional and trustworthy and fair - I can’t recommend these guys enough for all your AC needs.

Company are brilliant Company are brilliant, emailed them and got back to me straight away regarding attending a site and quoting the works that are required. Got a phone call after they surveyed site and advised they will send costs over which I received shortly after. They kept in contact after regarding any updates. Great company and very helpful.