
Richard Morris
GBRecommendation I recommend Crystal Sigma

Mohammad furreedan
GBI 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

Ryan Maini
GBDiligent, Professional, Great Service! Sam, Jamie and all of the team at Crystal Sigma have been extremely supportive and helpful through the entire process until completion. We had a tricky grade listed building to get AC for so the planning, design and commissioning process has been full of hurdles but the team have been very diligent and navigating through. Thanks Guys!

TERRY COOPER - ARGONAUT HEATIN
GB5* 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!

Southwark Square Ltd
GBAmazing 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.