At Crystal Sigma, we're London's leading air conditioning experts, dedicated to providing top-notch air conditioning, refrigeration, ventilation, heating, and electrical services to residential and business customers across the UK. With over 20 years of experience, we've built an excellent reputation for our commitment to quality, customer-centric ethos, and exceeding customer expectations.
Our Services
We specialize in a wide range of services, including air conditioning installation, servicing, and repairs for all major brands, ventilation system design and installation, refrigeration solutions, and electrical services. Our team of highly skilled engineers is equipped to handle projects of all sizes, from individual units in homes to large-scale industrial installations.
Commercial Air Conditioning
We work with some of London's leading companies to provide commercial air conditioning solutions, offering a free site survey to all our customers and a service backed up by our fleet of engineers. Our commercial air conditioning services cover all aspects, from design and installation to maintenance and repairs.
Industrial Ventilation
When you need help planning an industrial ventilation system, we have the right solution. Our products are from leading manufacturers in the industry, and our team of engineers expertly installs them.
Renewables
We're committed to helping our customers reduce their carbon footprint. Our air source heat pumps are designed to harvest energy from the air, providing an efficient and eco-friendly solution for heating your home or business.
Case Studies
Browse our case studies to see some of our completed projects, including the installation of new air conditioning systems, ventilation systems, and heating solutions for commercial and residential clients.
Our Promise
At Crystal Sigma, we're committed to providing exceptional service, quality workmanship, and unparalleled expertise. Our team of engineers works tirelessly to ensure that our customers receive outstanding results, every time.
Overview of the Reviews
The reviews are overwhelmingly positive, with all reviewers giving 5-star ratings.
Installation and Service
The reviewers praised the efficient and professional installation process, with many commenting on the speed and tidiness of the work. The team was described as friendly, responsive, and considerate of neighbors.
Quality of Work
The reviewers were impressed with the quality of the work, with many stating that the installation was "excellent" and that the team did a "fantastic job." The work was described as professional, tidy, and of high quality.
Customer Service
The reviewers praised the customer service, with many commenting on the helpfulness of the admin staff and the responsiveness of the engineers. The team was described as knowledgeable, friendly, and supportive throughout the installation process.
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