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

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

Recommendation I recommend Crystal Sigma

5* Service, from a 5* Company! Professional, honest and reliable company that can not do enough to make your experience with them smooth and easy. Punctual, ensuring that they are always ready to start the job on time. Very obliging too with times and days. They keep to their word and know their stuff!

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!