Central heating systems with a combi boiler generally have less sludge build up, because the water is piped directly from the mains and not kept in a tank where it can accrue rust and debris. Find the cheapest broadband, tv and phone deals. Sandra ann from birmingham on 19th march 2014. Activated charcoal, which is used to treat other types of poisoning does not effectively.
Added: 2018-06-29 | Category: boiler service