Your boiler is one of the most important appliances in the home, providing heating on cold days as well as hot water for washing. However, many people don’t notice it much until it is having problems! Paying attention to your boiler means that you can get a professional like this Cheltenham boiler servicing company in at the first sign of a problem. But what do you need to look out for that could signify that there is a problem with it?

Problems with the Heating

If you notice that your heating is taking a while to come on or is not coming on at all, this is a sign that you may have a problem with the boiler. If it is taking a long time to heat up, it could be that there is a blockage somewhere, or a problem with the circulation of the heating.

If the radiators are only heating up in part, it might be a problem with air being trapped in the system, so you could try bleeding the radiators to see if that helps.

Water Leaking from the Boiler

If you notice that water is leaking from your boiler, this is a sign that something is definitely not right. It could be caused by many things, from damaged seals to cracks in the pipes. As well as the fact that this could be dangerous and cause damage, the boiler may also be working harder than it needs to and therefore costing you more to run.

Strange Noises

This is a good way to detect problems in a boiler. There are lots of odd noises that a faulty boiler might make, and they could be caused by a range of different things. From banging and clunking to a whistling noise that sounds like a kettle, if you hear unusual noises coming from the boiler, you should call a Gas Safe registered engineer to take a look at it.

Hot Water Not Working

If your water is always coming out cold, and even when you leave the hot tap on for a while it is not heating up, this is a boiler issue that needs to be dealt with. It could be that you have low pressure in the boiler, or you may have a leak in the system somewhere.

Related: How to choose the right boiler for your home

Simple steps to extend boiler life

Spotting the warning signs is easier when you know how your boiler should behave. Read through the manual, which often lists useful details such as the normal water pressure. If the pressure should sit at around one bar, a reading above two bars can point to a problem, and if it is too low you can try repressurising the system.

Look after the rest of the central heating as well. Bleeding radiators clears trapped air and keeps the system running efficiently. Switching the heating on for about 15 minutes each month, even in summer, helps stop pipes clogging and reduces the chance of a breakdown.

An annual check by a heating engineer is the best protection. They can remove debris, repair pipework and flush the system, which helps it run efficiently and last longer. Never attempt complicated repairs yourself, as you could make things worse or create a dangerous situation, and it is against the law to tamper with certain parts of a gas boiler if you are not qualified. Always ask to see an engineer’s safety and registration certificates.

Pressure, pilot lights and cold radiators

Some faults have simple causes you can check yourself. If there is no heat or hot water, look first at the thermostat and the boiler pressure. A pressure gauge reading below 1 often explains why the heating is not working properly, and a pressure that keeps dropping may point to a leak or a valve that needs replacing. Strange noises can come from air in the system, low pressure, a failing pump or kettling, where limescale builds up in the heat exchanger and makes a sound like a kettle about to boil.

A pilot light that keeps going out may be caused by a draught, dirt or a damaged thermocouple. If the gas supply is fine, the manual will explain how to relight it. Cold spots on radiators usually mean air or dirt in the system, and bleeding them is straightforward, while radiators that never warm up may need balancing. A thermostat that switches the heating on and off at random may need replacing.

Anything beyond these checks, such as a damaged diaphragm, is a job for a registered gas engineer.