Heating Equipment Testing and Approval Scheme (HETAS)
Their scheme covers the range of installation work that an installer may be involved with e.g. dry appliances, appliances with boilers, solid mineral, wood and wood biomass, re-lining of chimneys, hot water and heating systems.
They also make available lists of installers, sweeps, flue specialists and maintenance companies to enable you to maintain your installation safely into the future.
In the event that there are complaints about matters of safety or compliance with Building Regulations, consumers can make a complaint to HETAS.
MyBuilder does not endorse this particular trade association or professional body.