All our engineers carry a wide variety of spare parts. Of course, using a timer for your boiler depends on the quantity of warm water that you need and the size of the boiler. Liquid drain cleaners don’t have to be bad for the environment! drain out. Upfields plumbing and heating contractors ltd was started in eastbourne in 1987 and we are now one of the leading plumbing and heating companies in the area, employing 35 plumbing and heating engineers.