If your boiler isn’t running and/or the water is not flowing cold to the hot water outlet, the issue is most likely due to your boiler’s pressure being either too high or too low.
But, there’s many other possible causes , and this guide will discuss the most frequent in addition to the probable solutions.
There is no hot water in the combi boiler: The top reasons and fixes
In the event that your combi boiler isn’t heating up to provide hot water, here are the most frequently cited reasons that you might encounter, particularly if you discover that your heating system is functioning, but there is no hot water
The most frequent reasons that you do not get hot water coming from your boiler
- Pilot light is not illuminated (no flame means not hot water)
Boilers make use of gases (or oil) in order to do it requires an ignition pilot.
Pilot lights are small Olympic flames that carry the entire burden of a family’s comfort as well as wellbeing.
In extreme circumstances, this flame might be sparked or, more often simply fail to get it caught. This can lead to complete failure, meaning that you’ll have the boiler with no heat.
If you have older boilers you may be able to observe the light source within the frame of your boiler However, with more contemporary boilers you’ll get notified of the boiler’s failings via an error message in a depressing black and white screen.
Referring to the boiler’s manual, you can try to turn off that pilot light.
If this doesn’t work, you’ll need an engineer in heating to attend to your boiler that is broken – hopefully, you don’t require a replacement.
Fortunately, in the majority of cases this will be an easy DIY fix as well as it’s a simple (free) method to bring your boiler’s hot-water back.
Cost to repair (and get hot water again):
DIY: £0.00
Engineer: £75-£160
2 – Frozen pipes
If there is no global nuclear disaster it will only apply to winter weather conditions.
A condensate pipe connects our boiler to an exterior wall (or often an inside drain) and permits the ejection of water that has been condensed.
Because of the slow flow of the water, and due to the unpredictable nature of physics it can freeze at times.
If you notice the issue the boiler will stop working to protect you, and give the user no warm boiling water (or heating) in any way.
Fortunately, it can be repaired at home. You can melt the frozen region by covering the pipe with a cloth or pouring warm water on the condensate.
You’ll have to restart your boiler following this issue.
After this your boiler should now have its hot water again.
Cost to repair (and to get your hot water):
DIY: £0.00
Engineer: £50-£150
3 – Diverter valve that is not working properly
In every boiler is an inlet valve.
It’s an in-situ traffic director, which controls that water flow as an outcast member of the X-Men.
A malfunction of this device caused by corrosion of the system or the build-up of metallic over time, could allow only hot water to reach your radiators, and deplete the hot water supply. This would mean you will not get hot water comes out from the boiler.
In the absence of a possible error code change It’s not something you’ll be able to identify at home, and a heating engineer is needed.
The ideal scenario is a replacement of the diverter valve that could cost about £200 including labour expenses, however, you must consider the condition and age of your boiler prior to throwing repair funds at it.
Cost to repair (and get hot water):
DIY: Unattainable
Engineer: £180-£250
Four – Issues with pressure: over or under pressure
The most likely cause is the leak mentioned earlier, however, pressure imbalance or excessively high could cause the absence of hot water from your boiler.
If your boiler is not in pressure, it can generally be resolved with an easy top-up.
A boiler that’s over-pressurized may be addressed at home by the simple process of bleeding your radiator, but when that doesn’t fix the problem the problem is a damaged boiler part that needs an engineer in heating or a new boiler. This is the reason of your inability to get hot water.
It is also possible to look into a power flush in order to increase the efficiency of your water heating system and to prevent blockages.
Cost to repair (and get hot water):
DIY: £0.00
Engineer: £50-300
The absence of hot water from a regular or system boiler: The top reasons
Heating but no steam from the boiler could be more common when you use an old-fashioned or system boiler that is equipped with hot water heater.
1 – Thermostat/timer failure
If you’re proficient using your gadgets or keep an of your usage of energy then you’re likely to use your boiler’s timer to monitor when it’s operating.
A thermostat problem will create a problem in heating, and not hot water.
If your thermostat also functions as an alarm, then a flaw in it could cause your boiler to turn off completely, thereby depriving you of hot water , plunge you back into an age where that you’re blinded.
Cost to repair (and get hot water again):
DIY: £0.00
- Pipe leak or boiler
A pipe or boiler that is leaking is likely to cause pressure drops.
The leak could result in an insufficient pressure of water which can affect the flow of hot water the taps.
The general loss of the boiler’s pressure could be cured by filling your tank with water by hand, but if it is due to an issue with the water, it must be dealt with by a trained professional.
Cost to repair (and get hot water):
DIY: £0.00
Engineer: £100-300
- Failure of the energy source Electric or gas
An absence of gas or electricity for the boiler could be the primary reason for the lack of hot water. It could cause you to be classified as a sloppy sausage for Googling reasons why your boiler isn’t working.
This article won’t provide great details on how to determine whether you have electricity or gas however, you should first make sure that other nearby appliances aren’t affected for example, the gas cooker or lights. Don’t forget to make sure your boiler is on at first.
Cost to repair (and to get your hot water again):
DIY: £0.00 (unless you’ve failed to pay your energy bills)
Engineer: £50-300
- Inadequate water cylinder size
If you’re not receiving hot water from the regular or system boiler, it could be that the cylinder isn’t sufficient for the hot water needs of your household.
The sizes of cylinders vary widely, with smaller sizes being ideal only for homes occupied by two Hobbits with a lesser demand for hot water.
If you’re a fan of long showers to rid yourself of the sins of your bad boiler purchase choice or you’re part of a family of normal-sized people, then your hot water will be leaking out within a matter of minutes.
The only solution is to use less hot water, or a bigger tank.
Cost to repair (and to get hot water):
DIY: Unattainable
Engineer: £500-700 (+ fitting)
Is there no hot water coming out of your boiler? Here’s the conclusion of a skim-reader
If you aren’t getting hot water coming from your boiler is many possible causes, and can cost anything from nothing to the equivalent of a few hundred dollars, depending on the firm you contact to solve the problem.
One of the most crucial things to be aware of is that you’re not in hot water
- If you’re not receiving warm water out of your boiler, look into every fix that is free or DIY (mentioned earlier). After you’ve exhausted these methods, you should be aware of the most likely reasons your boiler isn’t functioning before getting help from a professional to ensure you’re aware of the amount you are supposed to pay and not what a spanner-wielding snob is planning to charge you on Friday afternoon.
- If your boiler is in need of an expensive repair, think about the condition of the boiler as well as the chance of experiencing further problems in the near future.
When your heating system is more than 10 years old and has issues due to corrosion or age like a damaged diverter valve or frequent leaks, you should consider replacing the boiler.