Radiator cold at the bottom, hot at the top: 2 reasons why

A radiator cold at the bottom and hot at the top is usually due to the build-up of sludge. This is a black, mud-like substance which is a by-product of corrosion inside the heating system. It can seriously impact a radiator’s effectiveness, resulting in a chilly, uncomfortable room. This article will explain why this happens … Read more

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