Top 10 Most Common Boiler Problems

By Katie Anderson on December 19, 2011

We don’t give much thought to our central heating system. We expect it to work when we need it, pumping out a continuous supply of heating and hot water. But if a fault develops, a broken boiler can cause untold misery to descend, throwing our hard working homes into chaos.

An expensive inconvenience at the best of times, the majority of boiler breakdowns occur during the cold winter months, when boilers – having been inactive for long periods – are forced back into life, essentially putting considerable strain on your central heating system as it works to heat your home during the winter.

While some common boiler problems can be addressed without the need to call in a heating engineer, others will require the services of a qualified and experienced professional. If in doubt, it’s always best to seek professional help from a reputable engineer.

From weird noises to drips and leaks, Boiler Guide counts down the ten most common boiler problems you should look out for:

  • No heat or hot water – potential causes include broken diaphragms and airlocks, failure of motorised valves, issues with the thermostat or low water levels.
  • Leaking and dripping – a variety of issues could cause your boiler to leak water. It will depend on where the water is leaking from to determine the cause.
  • Strange banging, whistling or gurgling noises – air in the system is a common cause, alternatively it could be that the water pressure is too low or it’s kettling. Pump failure, particularly in older systems, could also be responsible for strange banging noises.
  • Pilot light goes out – could be a broken thermocouple which is removing the gas supply to the pilot light, a draught blowing the pilot light out or a deposit built up in the pilot light.
  • Losing pressure – a water leak in the system is the most common reason for a loss of pressure. But it could also mean that the pressure relief valve needs replacing.
  • Frozen condensate pipeThawing a frozen condensate pipe should ideally be done by a qualified engineer.
  • Thermostat issues – if the thermostat is losing accuracy or turning the heating on/off when its not supposed to it might be time to invest in a newer, more energy efficient one.
  • Kettling – hearing a strange rumbling noise? When lime scale builds up on your boiler’s heat exchange you get kettling.
  • Radiators not getting hot – corroded pipework can cause sludge to gather in the system, preventing the free flow of hot water to the radiators. Chemically cleaning or flushing the system will remove these deposits.
  • Boiler keeps switching itself off – could be low water pressure, a problem with the thermostat or a lack of water flow due to a closed valve, air or the pump not circulating the water in the system properly.

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So that’s our rundown of the most common boiler problems. Of course if your boiler issues persist it might be time to invest in a boiler replacement. Arrange for your free no obligation boiler quotes and install a brand new A rated boiler.

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Boiler servicing can save lives

Regular servicing ensures your boiler is running at peak efficiency saving fuel and money but more importantly it could also spot the escape of potentially lethal carbon monoxide, which could just save your life.

Servicing typically costs between £50-£80 so what are you waiting for?

Every year Boiler Guide helps thousands of homeowners find reputable and rated heating engineers for new boiler replacements and service jobs. Here are just some of the recent boiler quote requests we received and sucessfully completed:

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Pontardawe SA8 - Current boiler: Ferroli Optima. 1996. in cloakroom. All copper pipes. water pressure drops continuously and miss firing. Benefits: childtaxcredit,workingtaxcredit-under16. earns: £6.5K call anytime
BS3 - Current boiler is a valiant - over 10 yrs old - all copper pipes. problems with the pressure and it is leaking water. Benefits: childtaxcredit,workingtaxcredit-under16 Earns less £15, 860k pa. Call anytime.
Filton BS34 - Current boiler worcester 24i - No heating or hot water. Boiler won\'t ignite Benefits: childtaxcredit,workingtaxcredit-under16 Earns less £15,860. Call anytime and leave a message.
OL8 - Current boiler is approx 9 years old, located in the kitchen, Worcester 35cdi (non condensing) Faults: pressure keeps going down Benefits: childtaxcredit,employmentsupport-under16 House hold income is below £15,860. Contact: anytime
Nunthorpe TS7 - Current boiler: Worcester 24i. 16yrs. king strange noise and pressure gage keeps rising. Benefits: childtaxcredit. Earns: £8,050K Call anytime
BS5 - Current boiler is approx 10 years old, Ariston micron genius 23 MFI, located in the bedroom. Faults: Not heating the water or heating. Benefits: working tax credit-disabled worker. House hold income is below £15,860. Contact: anytime

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