We also work with estate agents like savills so give yourself peace of mind before you put down that deposit! Check it covers the work you're expecting and includes the words 'energy efficiency' you can also check their registration with gas safe. Ridgid water jetting machines are ideal for clearing grease, sewage or soap clogged lines. You have a combi boiler you want your new combi boiler in exactly the same position. Saturday hours by appointment! An engineer will need.