While it’s obvious that it’s better for energy bills if households keep their heating and tumble dryer usage down, there are also a few inexpensive radiator changes that can be made to save money this winter. According to BestHeating, they don’t usually need a professional either, which means Brits can save further. The experts warned that “radiator sludge” could result in “higher” bills as well as a shortened lifespan of radiators.
They said: “In technical terms, radiator sludge is a thick, sludgy mixture of rust, dirt, magnetite, limescale and other debris that can congregate in your central heating system over time. It’s very common. Particularly so in older homes or homes where regular maintenance has been given about as much attention as that unopened bottle of descaler in the cupboard.”
The sludge forms due to a combination of water, metal and oxygen. Firstly, water in the central heating system reacts with the steel and iron components, causing oxidation and turning into rust.
This ruse, in conjunction with other particles such as limescale from hard water areas, starts to circulate through the system.
Eventually, it settles in low points, such as the bottom of radiators. Over time, this thickens into radiator sludge.
The experts said: “Left unchecked, it can have serious effects on the performance and durability of your entire heating system.”
This includes boiler breakdowns, blocked thermostatic radiator valves and a shortened lifespan of your radiators.
According to the experts, if you’re bleeding a radiator and the water runs black, this is an obvious sign of a “sludgy situation.” Other symptoms can include cold spots in radiators, longer heat-up times, “higher energy bills”, and strange noises.
To clear the sludge, first turn off the heating and isolate the radiator valves. Next, drain the radiator and remove it from the wall.
Then, take it outside and run clean water through the radiator until it runs clear. If multiple radiators are affected or your heating is banging and clanking from your boiler, then it’s time to call in the professionals to perform a power flush.
The experts added: “A power flush requires high-pressure to pump water and cleaning chemicals through your whole heating system to eradicate rust, debris and sludge. This is a serious job that necessitates the services of a qualified heating engineer.”
It may also be best to seek professional help if multiple radiators are showing signs of blockage or cold spots, your boiler is making unusual noises, you’re having a new boiler installed, or the system is low on heat even after bleeding all radiators.
