A boiler connected with a central heating system is prone to problems over time and might even breakdown one day. Your boiler will exhibit many types of issues due to various reasons. One of the reasons which happen as the boiler ages is the accumulation of sludge and debris in the system. This happens due to corrosion and should be treated to avoid complex problems which will be expensive to fix.
Before looking at the solution, let us first examine what causes the sludge in the first place and what are its impacts. The iron components in your boiler are in constant contact with hot water. These iron components are protected by a layer of coating which prevents it from rusting. As the boiler ages, the iron will start to corrode and as the corrosion happens it creates sludge and debris. The hot water carries the sludge all over the system which will decrease the efficiency of the boiler. In some cases, these sludge start accumulating in a place which leads to a blockage. If the blockage happens near the heat exchanger or radiators then it will stop the boiler from functioning.
Most of the modern boilers use a much narrow pipe which can be easily blocked with a smaller amount of sludge. When the pipes are blocked it leads to overheating which can cause serious damage to the complete system and might even lead to a shutdown. Once you notice a blockage in the system due to the sludge then you have to call a certified boiler engineer and get it fixed. Before looking at various solutions let us see how to prevent sludge formation and blockage.
One of the most common preventive measures is to get a magnetic filter installed in the boiler. A magnetic filter has a strong magnet which attracts and collects all the sludge and debris before it enters the pipes. This will ensure that your boiler is always free from any debris and operate smoothly. The basic magnetic filter collects the debris that is formed due to iron and steel corrosion. There are some advanced filters which even collect copper and zinc debris and offers a hassle-free experience.
When you are buying a new boiler the engineer would have already quoted you for the magnetic filter. If not you can ask for one and he will be able to advise the best-suited filter based on your make and model. A boiler with a magnetic filter is eligible for additional warranty so make sure to check with your brand for the same during the purchase. If you prefer to install a magnetic filter in your existing boiler then that is possible too. You can ask your engineer for a quote and he will be able to get it installed in most of the existing models too. Magnetic filter is quite big in size and so installing it in all the existing systems might not be feasible.