Trade associations and Professional Bodies for Gas Boiler Replacement

Association of Plumbing and Heating Contractors

Chartered Association of Building Engineers

Chartered Institute of Building

CHAS

CIPHE

Consumer Protection Association

CORGI

Federation of Master Builders

Gas Safe Register

Guild of Master Craftsmen

Institute of Plumbing & Heating Engineers

ISO 9001

Norfolk Trusted Trader

Refcom F-Gas Certification

Stroma

The Consumer Protection Guarantee

TrustMark

UK Consumer Protection Agency

UKAS

UVDB

Which? Trusted Trader

Worcester Accredited Installer