Your central heating system may start showing signs that it needs to be flushed. This is something you should strongly consider before you decide to install a new boiler. Some of the signs are outlined below:
Your heating system is slow in starting up
You hear unpleasant noises coming from your boiler
Sludge has begun to form
Your radiators need bleeding quite regularly
The treatment of your water will largely affect how efficiently your boiler runs. The treatment of your water is so important that it can even affect your heating system and boiler's longevity. Most people are not actually aware of this and an investigation carried out of 90 mains central heating systems showed that less than half were treated correctly and some of them hadn't had any element of chemical flushing at all.
The poor treatment of water has not been helped by reports which suggest that many new boilers that are installed in the UK are often installed within existing heating systems where old radiators and pipework are commonplace. The differences in overall efficiency between flushed systems and non-flushed systems can be demonstrated by some tests that were carried out. Unsurprisingly, the results indicated that the systems that had been flushed showed a 6% improvement in efficiency in the heating system in comparison to an old system.
It is important to be aware of the fact that most central heating systems are exposed to the atmosphere allowing oxygen to enter the water. This results in sludge building up in the pipework, which can result in a wide range of problems if left untreated.
Therefore it is important to note, that just installing a new boiler is not enough if you do not make sure that your water treatment is up to standard. In order to maximise the full efficiency of your boiler you need to ensure that you focus on your water treatment otherwise your investment will be wasted.
So what benefits will you gain from flushing out the central heating system?
Flushing ensures that the whole system is cleaned, including underfloor pipework
The noise coming from your boiler will be fixed
The treatment prevents further corrosion from occurring in the future
The drawbacks with using the flushing system
How successful the power flush is will depend on various factors. In some cases, the level of corrosion in the central heating systems will be quite extensive. In these circumstances the flushing process is unlikely to solve the problem.
Therefore it all depends on how long your system has been neglected for. If it has been for a substantial amount of time, than it is unlikely that the flushing process will work. Your radiators may also be affected by the corrosion.
Tal Potishman, editor of Heating Central, writes articles about
central heating, boilers,
Barnes plumbers, underfloor heating and solar thermal. He specializes in helping save money by advising on efficient heating.
Tal Potishman is editor of Heating Central, which publishes content about London plumbers, boilers, underfloor heating and solar thermal. He specializes in helping save money and the environment by advising on high-efficiency heating.
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