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.

Crystal Sigma work at our property Crystal Sigma have carried out a number of installations for us at a residential block we own, including in line electric boilers, air source heat pumps and general heating and plumbing works. Their work has always been excellent, the premises left clean and tidy, and their response time and flexibility also excellent. We continue to use them for all our future needs related to the above

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.

I have team outstanding service 10/10 I have team outstanding service 10/10 In the following manner It was done within a strict time frame 2. The craftsman were very impressively efficient 3. They have done a tricky and neat installation which many other companies simply declined to undertake my work 4. My place was cleaned up with no mess at all 5. Last but not the least the price was very reasonable compared to alternative quotation I will recommend the company to any potential customers I have made this declaration out of goodwill in full honesty All the best Mohammed Furreedan

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