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Is Your Boiler Broken? Here's What You Should Do

If something goes wrong with your boiler, it can be a real inconvenience. Here are safe and easy ways for you to identify where the problem with your boiler lies.

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Price Guarantee[28]

Simply answer a few multiple choice questions about your existing boiler and we’ll give you a fixed price for a new boiler including all parts and installation[28]

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A happily functioning boiler helps make a happy home, we're sure you'll agree. If something goes wrong your boiler, it can be a real inconvenience not to mention potentially dangerous. It is important that you take any sign of a boiler fault seriously; even if you can't smell gas but your boiler is showing minor signs of breaking down, please act as quickly as possible. Ignoring any problem with your boiler could not only be dangerous but could result in an invalidation of any warranty or insurance policy that you may have. There are safe and easy ways for you to identify where the problem with your boiler lies, but please never attempt to repair the boiler yourself. By law, only a qualified gas engineer should ever perform any work on your boiler.

Signs of a broken boiler

As well as noticing a lack of heat or hot water within your household, there are also some common indicators to look out for including:

  1. Unusual whistling, banging, clanking or tapping noises
  2. Higher than average gas usage indicates the boiler is not performing efficiently
  3. The pilot light or flame is orange/yellow in colour, which should normally be blue
  4. Will show a high pressure instead of continuing at a steady pressure

Check the boiler pressure

There is a pressure gauge or dial with 1-4 bars showing. The boiler pressure for modern boilers should typical range between 1.0 – 1.5 bar. If it's lower than 1 bar, most sealed systems won't function due to boiler safety devices. Use your manufacturer's instructions to refill to restart your system if your boiler pressure is below this range. If your boiler pressure is showing the correct level, yet you are still having issues, you'll need to contact your gas supplier or a qualified Gas Safe engineer.

Check the power supply

If you check your electrical supply and find that although plugged in your boiler is not turning on, then you should contact your electricity supplier. Power cuts can cause the boiler's clock to reset and lose your chosen settings. If possible reset your boiler and then test it's working by asking it to turn your heating on in 10 minutes time and wait to check that it does so.

Check the gas supply

To find out whether your gas supply is working or not, simply check that the other gas appliances in your household are functioning as usual. If your appliances aren't working, you can check with your neighbour's on whether their gas supply has been affected as well.

You should contact your gas supplier in the event that your gas stopcock is on but no gas is showing through.

Check the water supply

Check that your water supply is still turned on, if not then contact your water supplier to help investigate.

Another common issue can be to do with the pilot light on a boiler going out. The pilot light goes out most commonly on old boilers and can happen for several reasons. You can firstly attempt to ignite the pilot light yourself by following the instructions usually found in your boiler manual or located on the inside of the boiler door. If the pilot light continues to fail to ignite, you'll need to call in a qualified Gas Safe engineer to detect why your boiler is not igniting.

Check the thermostat and programmer

Your central heating programmer should be in the ‘on’ position and your thermostats set above room temperature. If the system works based on a timer it may be that the clock has gone forward or backward and needs to be adjusted correctly. Where necessary, the timer may need adjusting when clocks go forwards or backwards.

Frozen Pipes

Due to the cold climate in the UK, it is incredibly common that the weather can affect your piping system and frozen condensation can easily cause a blockage in the system. This blockage can cause the water to fill up the boiler and prompt a breakdown.

Whilst we advise contacting a qualified Gas Safe engineer to assist you with frozen pipes, you can try using a hot water bottle or pouring warm water onto the end of the pipe then follow by turning the boiler on and off again.

Still broken?

If you've tried all of the above and you're the still experiencing a fault in your system, get in touch to arrange a visit from one of our professional Gas Safe engineers who will be able to diagnose the problem and advise on the best solution.

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[28] Exclusions apply. See

[79] 5% online discount is available to domestic gas and LPG customers who receive an online quote for all boiler brands excluding the Ideal Logic HE24, HE30, HO15 & HO18 and Worcester Bosch 25i ERP, 30i ERP, 15ri & 18ri boilers which qualify for the winter bundles offer. £50 additional discount available on all like-for-like system swaps and a £100 additional discount is available on conventional to combi, and combi to conventional boiler swaps. Online discounted price is only available for the duration of the 14-day quote validity which starts from the day the quote was given. Help-Link UK Ltd include a filter as part of your quote as this is highly recommended by the boiler manufacturer as a key component in maintaining boiler health, functionality and may potentially be looked upon favourably by manufacturers when assessing warranty work. This filter can be removed at the customer's request. Quote also includes a programmable thermostat for all combi boiler installations as this is a legal requirement as part of the Boiler + legislation introduced 6th April 2018, and cannot be removed from the installation unless; it is replaced with an alternative smart thermostat; or another energy saving measure as listed in the Boiler + legislation or if a smart thermostat already exists within the property. Alternative thermostats, including smart thermostats are subject to an additional charge.

Customers within the following postcodes will be subject to regional price variations which will mean a premium is charged: BR, CR, DA, E, HA, EN, IG, KT, W, N, NW, RM, SE, SW, SM, TW, UB, WC, WD, EC

Offer is not available to Help-Link UK Ltd or HomeServe group employees. This offer cannot be used in conjunction with any other offers. Help-Link UK Ltd have the right to withdraw or change the offer at any time. Online discount is automatically applied when the customer gets a quote using the online quote system at and as long as the customer meets all the above criteria.