What pre-hire questions should be posed to a plumber? You can tell us of your complaint via. Test your vocabulary with our -question quiz! Take a look at our range of hot water systems -. Have a problem with your septic tank or cesspit? We supply brands of the best boilers ( a rated boilers ) such as vaillant, ideal and worcester. Our licensed plumbers have hour availability and are ready to help when you need them most! We'll use cobol for.