Common Central Heating Problems & How to Fix?

Up2Speed Marketing Ltd • July 2, 2025

We all rely on our central heating systems, and that makes it even more frustrating when a problem arises with yours. These problems often arise when you turn them on after long periods of disuse. To avoid problems, you should turn the heating on periodically throughout the summer so those periods of disuse aren’t as long.


We’re going to talk about what can be done to fix any problems you might experience with your heating system, as well as some of the most common problems that might cause those problems to begin with. So read on now to find out more. 

How to Fix Common Central Heating Problems

When it comes to fixing the central problems you’re facing in your home or commercial business, there are many ways to go about it. There are things you can do yourself, but there are many instances in which you should call the experts and let them take care of it instead. That’s always the case when the problem relates to something that you don’t really understand. You can carry out basic checks yourself but if further work is required, it’s best to let an expert take a look at it and perform the necessary work.

The Main Causes of Common Central Heating Problems

There are lots of potential issues that might be causing the central heating problems that you’re currently experiencing. We’re going to take a closer look at some of the problems that might be behind the negative signs your central heating is currently giving off.

Central Heating Diverter Valve Problems

If your hot water taps are only reaching a lukewarm heat and your bath and sink faucets are not running hot enough, it might mean that there’s a problem with the diverter valve in your central heating system. It’s a problem that’s very commonly experienced, especially with older boilers.

The function of the diverter is to get the hot water to your taps. It’s not the kind of problem that’s easy to fix by yourself, so it might be a good idea to call on someone with professional knowledge to assist you with it instead.


When you have a problem with your central heating system’s pump, it might be the case that there’s an underlying issue with the wiring. The pump might also have begun to corrode and as a result start leaking water. The only way you can really fix that kind of problem once it exists is to entirely replace the heating pump. It’s something that you can do yourself, but like many of the fixes and repairs here, it’s often better to trust a professional.

Central Heating Thermostat Problems

If you think your thermostat is broken, it might be because you’re noticing that the rooms in your home are overheating and the thermostat is doing nothing to stop it. It might also be the case that your water runs far too hot or that the tank is kettling, which means making a noise. Thermostat problems can be hard to pinpoint and explain, and that’s why it’s often best to get an engineer involved.

Central Heating Boiler Problems

There are many issues that could be behind the boiler problems you’re facing. Broken internal components often cause problems such as leaking and dripping. If there’s a leak around the pipes of the tank, it might also be the case that corrosion has set in or that something has been

fitted incorrectly. It’s best to call an engineer when it comes to boiler problems because you don’t want to take any risks. Boilers are often complex and difficult to fix if you’re not very familiar with their inner workings.

Problems with Cold Radiators

If you have a problem with your radiators remaining cold even after you’ve turned them on, it might be the case that there’s an underlying problem that needs to be addressed by a professional. But before you reach that stage, you should try checking the thermostat and make sure that everything is in the correct setting. You should also check the motorised diverter valve by turning it off and on again, as well as checking the system is being supplied with electricity. If there’s no electrical supply, a fuse might have blown.

Loss of System Pressure

There’s a pressure gauge on your boiler and this will tell you whether the system’s pressure is correct. If it’s telling you that there’s been a loss of pressure in the system, it’s up to you to find the problems and sort it before calling on a professional if you need to. It could be due to a water leak, so look for signs of that kind of problem. If the problems arose following maintenance work, you should tip up the system with water via the filling loop. Alternatively, you can call out a professional to do that for you.

The Overflow Not Stopping

When the over flow of your water tank is not stopping as it should, it’s usually a sign that there’s a problem with the tank’s ball-cock. The water tank is in your loft and feeds hot water that allows for heating in system and traditional boilers. One of the things you can try to do is unblock the ball-cock. It’s something that you can often do by yourself, and it’s worth giving it a try. By moving it and getting rid of the jam that’s causing the problem, you should fix the problem completely.


Don’t hesitate to get in touch with us here at Aquatek – Plumbing & Heating Services. We’ll help to get to the bottom of your central heating problems, and the cause and then carry out the repairs that need to be made. Our team is made up of experienced professionals who can carry out specialised work that you can rely on.


If you want to contact us, you can call 0800 328 4329 or 0208 229 6018. You can also book an appointment here on our website or send an email to info@aquatek.info.

Why is My Boiler Losing Pressure

By Up2Speed Marketing Ltd • July 2, 2025
One of the main calls that most plumbers receive every year, is the question ‘why is my boiler losing pressure?’. There could be many reasons as to why the boiler may be losing pressure, but the main factor in why it could be is that there could be a leak in the system somewhere. Some of the parts that could be leaking, could be the radiator valve, a pipe or something else that could be allowing the water to escape the system, then causing the loss of pressure within the boiler. However, they are not the only things that could cause a boiler to lose their pressure. There could be a problem with the valve on the boiler that could have possibly started to fail, in turn causing a drop in the pressure inside the boiler.

How Much does a Boiler Service Cost?

By Up2Speed Marketing Ltd • July 2, 2025
Boilers are built to last, with a life expectancy of up to fifteen years but as with anything, problems can and do occur. This is especially true overtime when it comes to older models. Parts can wear out, and eventually, need repairing or replacing completely causing you a number of problems along the way.

What Boiler Size do I Need?

By Up2Speed Marketing Ltd • July 2, 2025
Picking the right boiler for your home is very important. Whether you’re replacing one that’s broken or need to get a new one that works better for your property, it’s a task that needs plenty of research. Boilers aren’t cheap after all, and you want a central heating system that’s going to provide everything you and your household needs on a daily basis. But what boiler size do you need? Most of us will have little knowledge of the variety of boilers out there, let alone what each one can do to benefit the home. So with that being said, here are some tips on picking out a boiler size that’s perfect for your property.

Why is My Central Heating Noisy?

By Up2Speed Marketing Ltd • July 2, 2025
Central heating is something that shouldn’t be loud and obtrusive when it comes to the noise it makes. If your central heating has been well maintained, then you shouldn’t really experience anything too loud when it’s being used. However, there can be cases where your central heating is louder than usual or makes regular noises that might include banging, gurgling, or even dripping sounds. With that being said, here’s why your central heating might be noisy.

Bathroom Fittings Buying Guide

By Up2Speed Marketing Ltd • July 2, 2025
‘Bathroom fixtures, toilet fittings, bath and shower fixtures’ – you can see how these words can quickly become confusing bathroom terminologies when you are renovating your bathroom. Out of the many different terms, ‘bathroom fittings’ sounds simple enough, but what exactly does it mean? This guide seeks to help you understand precisely what bathroom fittings are and give you an understanding of some of the bathroom fittings lingo you may hear during your project.

How To Bleed a Radiator Without a Key

By Up2Speed Marketing Ltd • July 2, 2025
Winter is well and truly on our doorsteps, and we all need our heating systems and hot water to be running smoothly. So if you find that your radiators aren’t heating up correctly, the room feels cold even with the heating turned up, or the radiators you have are cold to the touch at the top, then the first thing to try is bleeding your radiators. When air becomes trapped inside the radiator, it can affect the performance of the unit and result in a partially heated or cold room. This occurs from time to time, but as it’s not every day, frequently people misplace or lose their radiator key. Before you give up, there are a few substitutes that you can use to get the job done.

No Water or Low Water Pressure?

By Up2Speed Marketing Ltd • July 2, 2025
Having low water pressure is an extremely annoying problem. Even worse is turning on a tap in your home to find out that you have no water. When this happens, you need to act fast to restore running water in your home. Low water pressure can do more damage than merely inconveniencing you. For instance, it can damage appliances like the dishwasher and the water heater. This is because these appliances require specific water pressure to work effectively. If they are continuously operating with low water pressure, they may get damaged, and you may even have to replace them. So, what causes low water pressure? And what can you do if you encounter this problem? Read on to find possible causes and practical solutions to your low water pressure problem.

How to Plumb in a Washing Machine or Dishwasher

By Up2Speed Marketing Ltd • July 2, 2025
A washing machine or dishwasher is not only convenient for the house, but they are also easy to use. These machines come in handy when it’s time to clean up the house and do laundry. Here is why: They eliminate physical effort where you don’t have to use your hands to wash clothes and clean dishes. It saves time since the machines perform all work, which includes cleaning and drying. So, you can multitask and finish on time. They perform quality work compared to using your hands, which can miss out on stains. They protect clothes from getting damaged while avoiding careless dropping of dishes. Washing machines and dishwashers continue to make life easy. That is, they provide new technological advancements with each new make. Such include different sizes to fit in different house spaces, while others provide a variety of setting options to choose from, where the type of cleaning depends on material and color of clothes or type of dishes. But without careful plumbing of the dishwasher or washing machine, it can be difficult to use them. The average time a person can take to install these machines is two hours. If you don’t know how to do it, consider hiring a plumbing specialist. Luckily, you can learn how to install a washing machine or dishwasher with this simple guide. These tips can help you avoid an additional fee for installation. Let’s dive in.

How to fix a toilet flush button – Replace toilet flush button

By Up2Speed Marketing Ltd • July 2, 2025
You never consider how to fix a toilet flush button until you break yours and you don’t have a choice. When you face a flushing problem in your toilet, it can cause some trouble and make your toilet impossible to use. This is always going to be an issue – you need to use your toilet, and you need to be able to flush it, too. Today, we’re going to talk you through how to fix a toilet flush button!

How to Fix a Dripping Tap

By Up2Speed Marketing Ltd • July 2, 2025
A dripping tap can drain your water reservoir and pockets, leaving you with a huge water bill. The leakage is not only annoying but also a costly and safety hazard. For those with handyman skills, fixing a leaking tap can save you money. Despite the different types of taps, the following are standard tools that you’ll need to get the job done: Flathead screwdriver Gaffer tape Shifting wrench Pliers or adjustable spanner The choice of a tap primarily boils down to your tastes, preferences, and budget. Differentiation is mainly based on mounting, design, spouting, and tap mechanism. Compression washer tap: Also known as a washer tap, a compression washer tap is a pillar tap with a handle for controlling water flow. This type of tap has a simple tap mechanism that only requires twisting to move the washer up and down. Ball tap: The controlling mechanism works by manipulating the internal hollow ball using the handle. Cartridge tap: Despite the twisting mechanism to control water flow similar to washer taps, cartridge taps have cartridges. The internal cartridge gives you greater flexibility for controlling water flow and temperature. Disc tap: This tap comes with disc ceramics for controlling water flow, which is achieved by manipulating and aligning the discs via the handle. Other tap types include a mixer tap, which is a single unit with two handles for hot and cold water. You can also opt for a monobloc tap, which has a single handle that turns either direction to control the water temperature. These types are based on the design and use disc, ball, cartridge, or compression mechanisms.
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