Set up an appointment with one of our technicians! call today! Plumbers, gasfitters and drainlayers must be registered with the plumbers, gasfitters and drainlayers board and hold a practising licence. Most oil boilers use kerosene as a fuel and are floor standing like their gas counterparts, they also come in both combi and heat-only condensing styles. The h&v news awards celebrate excellence, innovation and achievement within the building services industry help-link were honoured.