Gas cooker installation Free Standing Gas Cooker Installations in the West Sussex, £60 to install your free standing Cooker, any parts used will be charged as extra, the prices for Cooker parts will be similar to the rrp from Screwfix, examples of things you might need are a Bayonet Cooker Hose, Bayonet Elbow Fitting, Backplate Elbow & Cooker Chain.I will issue a gas safety certificate for the Cooker and Pipework Installation with your receipt via email. Please be aware that the Gas Regulations have changed and the clearances above and to the side have increased, also that we will be testing your Installation pipework before we carry out any work, and can only proceed once the Installation is satisfactory and passed a tightness test, if tightness test fails you will still be charged for the visit at £30.Some parts you may need for your Free Standing Cooker Installation. materials from Screwfix COOKERFLEX ANGLED BAYONET SOCKET GAS FITTING ½" £5COOKERFLEX STRAIGHT BAYONET COOKER HOSE 12.5MM X 1200MM £15COOKER STABILITY CHAIN & HOOK £3COMPRESSION ADAPTING 90° WALL PLATE ELBOW 15MM X ½" £3