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Do I need to replace my boiler

Posted on April 9th 2019

Replacing a boiler can be expensive and isn’t something you’re going to want to do unless you really have to. However there are a few reasons why it might be a good idea, ranging from essential – the boiler is faulty or keeps breaking down, or is working but old and inefficient meaning you’re going to be paying much higher energy bills.

Is it safe?

The first thing to check if you think your boiler might be faulty is the pilot light. A blue flame indicates a working, healthy boiler, but a yellow Flame indicates a potential carbon monoxide. Although CO is odourless, a leak will interfere with the way your boiler burns fuel, causing a smell. So a strange smell and a yellow flame is a clear sign you should call an engineer straight away.

Even if the boiler is fixed by an accredited engineer, it’s probably best not to wait for the issue to reoccur, as it’s just not worth the risk.

Is it working as it should?

If your boiler keeps breaking down and you’ve had to call out an engineer more than a few times then it may make sense to invest in a new, efficient model. A boiler that keeps failing is a money drain, both in terms of engineer callouts and poor efficiency.

Common faults include poor pressure, lack of gas supply, thermostat malfunction, loss of water supply or frozen pipes and there are some steps you can take before deciding if a new boiler is needed.

Lack of gas and water supply are simple to determine, just check your other gas appliances and taps.

Check your thermostat is at the right temperature and maybe try turning it up. If your thermostat is set  below 21°C, the boiler might simply switch itself off. If this doesn’t work you can refer to the user manual and then the manufacturer if necessary.

If your radiators and hot water take longer than you feel they should to heat up, this could indicate low pressure. Check the pressure is at 1 bar, if it is lower bleed the radiators and check the pressure again, (see our guide on how to do this).

Regular drops in pressure could indicate a water leak. If you think this might be the case then check the radiators for any signs of leakage. A leak could be caused by a number of reasons including a fault with the boiler pressure valve, a leaking temperature valve, corrosion within the system or the heat exchanger or leaking pipe fittings.

Although there are DIY fixes for some issues that occur, you shouldn’t make any attempt unless you know what you’re doing and are completely confident, and you should NEVER attempt to open the boiler itself. Your insurance could be void and you could even face a prison sentence if there is a gas leak or CO2 as a consequence of interference. You are best of getting in touch with the professionals here at Diamond Gas.

Your boiler is old

If your boiler is older than 15 years then chances are it isn’t a condensing boiler meaning it will be very inefficient compared to a new combi model. New condensing boilers are more than 90% efficient and can reach greater levels than that with the help of a smart thermostat by the likes of Nest. In fact, a new efficient combi condensing model will mean great savings, up to £500 per year on energy bills.

Diamond Gas & Heating offer Worcester Bosch boilers with up to a 12 year guarantee. Plus, with us, you can spread the cost, meaning a new boiler, which typically costs between £1,800 to £2,500 including installation by a Gas Safe engineer, could cost as little as £9.99 a month.

Our Warmcare packages start from just £6 per month too, meaning that if your boiler does break down, we have you covered too.