I had appliance guys over to re-do my dryer vent and they were in and out got the problem solved quickly and very clean! Engineering specifications and product submittals. Combi boilers: is a combi boiler the right boiler for you? Had a leak in a main supply line, repair required cutting concrete and trenching they got the job done quickly and reasonably priced. We had a combi okay, hot water whenever you require it, but if somebody turns a tap on when you're in the shower, heavens you know about.