We specialize in clogged drains, clogged pipes, sewer cleaning, drain and sewer repairs and rooter services. Thank you so much for assigning a positive, knowledgeable, and efficient technician for our furnace time-up! he represents everything we love and have grown to expect from holt! Supply and fit an a-rated worcester bosch greenstar combination boiler up to 28kw to go in place of old on a like for like basis your fixed price service includes. Toda.