They were fast and reliable They were fast and reliable. I needed AC units installed asap and they were happy to help and do it in my timeline. They came recommended and they didn't fail to deliver.

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

Well priced, helpful and friendly We got in touch after receiving a quote elsewhere we perceived to be extortionate. within days of enquiring, Crystal Sigma were in the premises and produced a quote which was far more competitive. Following that within a week or so we had the Unit fitted. Very pleased with the service from the office staff as well as the two guys who fitted the unit. Very impressed with the entire service

Amazing work completed so quickly and… Amazing work completed so quickly and efficiently. They were very clean & tidy and got the job done in no time. Would 100% recommend.

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.