BEWARE OF BEING CONNED:
Residents who have gas contracts with REPSOL or CEPSA will receive an official letter every 5 years from REPSOL or CEPSA, requesting that they phone to arrange for the legally required 5 yearly gas inspection. The fee is usually about 80 €. Any work needed to bring your installation up to date will be quoted for by the official REPSOL/CEPSA engineer at the time of the inspection, prior to any work being carried out.
Cold callers purporting to be official agents carrying out gas inspections should ALWAYS be REFUSED access to your home. Appointments for inspections are made by the householder, NOT by the company.
NEVER sign an authorisation for ANY work to be done to update your gas equipment without checking the validity of the engineer. ALWAYS obtain an alternative quote if you think the estimate is excessive.
If you have any doubts about the validity of an engineer, phone the gas company to whom you are contracted.