Have used these guy's on a number of… Have used these guy's on a number of occassions for new installs and repairs and found them to be reliable and tidy with their work. Easy to deal with and listen to what your requirements are to achieve a good result and very competitive prices.

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.

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

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!