DRH Plumbing and Heating Ltd are Worcester Bosch and Vailant Registered Installers and can offer up to 10 years warranty on selected Worcester, Ideal and Valiant Boilers. Bristol Plumbers DRH Plumbing & Heating Ltd was established in 2004 and are fully qualified and insured to deal with all your plumbing and heating needs. Experienced in both new builds and renovations, DRH Plumbing can undertake all types of plumbing and heating in Bristol and surrounding areas, from replacement bathrooms, full heating installations, to installing a cooker, changing a shower or simply a washer in a tap!