Heating systems are fairly complex beasts, and sadly in the UK they need to be used pretty much constantly during the winter months. Like any piece of machinery that is constantly in use, heating systems require a certain amount of maintenance to maintain continual efficiency. One problem that tends to plague heating systems is the build up of iron oxide, colloquially known as “sludge”. As the name suggests, this “sludge” is a gungey, unpleasant gloop that starts to accumulate in all heating systems after a few years. It’s a perfectly normal occurrence, and isn’t a symptom of a deeper problem ...
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