London’s Leading Air Conditioning Experts For Over 20 Years Contact Our Team Recruitment Case Studies
air con servicing
Servicing & RepairsFor all major brands
contact crystal sigma
Office 0207 1830130We’re here to help
trust pilot reviews
book an appointment
Request a QuoteClick here to start

Ventilation

Domestic & Commercial Ventilation Systems

Crystal Sigma is a leading ventilation expert, we supply, install and repair all types of ventilation system for your home or business.

Recent Callouts by Engineers

22,768

Systems Installed

82%

UK Coverage

41%

Average Energy Saving

Going Green Has Never Been So Easy!

Our Partners

renewable energy consumer code
mcs accredited installer
gas safe registered
qms installer
government endorsed standards
health and safety for contractors
Building & engineering services association
approved contractor
safe contractor
ssl secured