Why You Should Power Flush Your Radiators?

Central heating offers a variety of benefits to every home. The most notable is that it provides hot water to the house. And, with help from the radiators, you also get a warm home safe from the biting cold. After using your central heating for some time, you might notice that the radiators are not as efficient as they were and, they might even have some hot spots.

That is when you need a power flush. However, while the power flush is the only alternative to getting rid of the sludge and scale that causes the radiators to be inefficient, most homeowners still don’t know why they need to have their radiators power flushed once in a while. Here are some of the key reasons why power flushing is important.

3 Reasons to Power Flush Radiators

To clear blockages and remove impurities

When you’re not using the central heating, the water is standing, and sludge settles. The narrow tubes in the radiators also cause sludge to settle and increase corrosion. As a result, over the years, a substantial amount of sludge and debris settles in the radiators hampering the movement of water.

This is why the radiators develop cold spots because the hot water is not able to get over the sludge. By power flushing, you can have these impurities removed and the blockages cleared allowing the water to circulate through the radiator with ease.

Restore efficiency

For the radiator to function, it relies on hot water circulating from the boiler and transferring the heat to the radiators which is then transferred to the room. When the radiator is clogged, hot water is not able to move around the radiator easily and efficiently. Because of this, most of the heat is lost before the water can go through the radiator.

If the waste and impurities have caused a blockage, then there’s no water going into the radiator at all. That means no heat can be transferred into the house. By clearing all the impurities and waste through power flushing, circulation of water can be restored. As a result, the radiators can get back to their job of transferring heat into the room before it’s lost.

To Save Money

Power flushing your radiators can also save you money. When your system is struggling to heat the house, a lot of heat is lost as the water strains to get to the radiator. As a result, you have to run your boiler for long hours which consumes more energy. Also, a lot of energy is wasted as water is trapped in between the blockages.

Once the radiators have been power flushed, the flow of water is restored. Your home gets warm faster and you will also notice that you don’t have to run your boiler for long periods. Because the transfer of heat is more efficient, you save money on your energy bills. Power flushing the radiators also reduces strain and pressure in the system reducing the chances of the system breaking down. So, you also save money on boiler repair costs.

Power flushing the radiators is a critical process in the maintenance and functioning of your radiators and central heating as a whole. It should be carried out once every few years. Not only will your radiators benefit from this process but you will too.

Why Should You Service Your Boiler

Buying a new boiler is financially intensive. While they are built to last over a long period, not paying proper attention to the boiler and having it serviced regularly can have catastrophic results including premature failure of the boiler.

It’s recommended to have the boiler serviced once a year. While the cost of having the boiler serviced is minimal, the trouble it can save you is unthinkable. Having your boiler serviced should be at the top of your priorities. If you’re not convinced, here is why you should take boiler servicing more seriously.

4 Reasons Why You Should Service Your Boiler

You have a better chance of catching boiler problems early

Most homeowners forget that boilers are not only in action during winter. A boiler works every day to provide your home with hot water. Each time you run the boiler, there’s a chance something could go wrong. Sometimes, you might not notice such problems until it’s too late.

By servicing the boiler at least once a year, you engineer can stumble and identify any potential problems with the boiler and have them corrected before they get any worse. The timely repairs will save you money and a lot of trouble. It will also ensure that when winter hits, you have a reliable and well-tuned boiler ready to take on the chilly weather.

Servicing is Cheaper than replacing the boiler

Servicing your boiler doesn’t cost as much as most people think. Without a doubt, the cost of servicing your boiler is only a fraction of replacing it. In addition to saving the trouble of having to replace the boiler, servicing also helps to notice fails and repairs early which cuts back on the cost of repairs.

Also, a properly maintained and regularly serviced boiler will help serve you longer. No matter which way you look at it, the cost of servicing a boiler is worth it and saves you a lot more than you spend.

You Stay Under Warranty

Some manufacturers require that your boiler is serviced once every 12 months for the warranty to stay active. If you fail to follow this requirement, there’s a fair chance that if the boiler breaks down, the warranty will be voided and you can’t get assistance from the manufacturer. That means you have to repair the boiler at your own cost.

It Can Save Lives

Sometimes, because of the benefits that a boiler has to offer, people overlook how dangerous it can be especially when it is not properly serviced. A lot of people are reported to go to the hospital because of carbon monoxide poisoning from a boiler leak. Some even die. When servicing the boiler, a Gas Safe registered engineer will check and fix any leaks or weak points in the boil. Such fixes could potentially save the lives of you and your family and make the boiler much safer to use.

There is a hound of benefits associated with a properly maintained and serviced boiler. A serviced boiler is more efficient and saves you money on fuel and at the same time, having your boiler serviced can help identify leaks and other problems early and reduce the cost of having the repairs done. It will also allow you to get more out of the boiler before you need to replace it.

Boiler Pressure Keeps Dropping to 0

Unfortunately, boilers losing pressure is a common problem especially in systems that are not properly maintained.

Boilers that are part of a sealed system require pressure (about 1.5bar) to function. To accumulate pressure, the heating circuit is sealed after the system is filled with water to a certain level. If water escapes from the system, the pressure reduces. If the pressure falls below 0.75 bar, the safety switch prevents the boiler from firing. This means no more hot water for you.

What Causes Loss of Pressure in Boiler?

There are several reasons why your boiler might be losing pressure. Regardless of what the reason could be, it should only be corrected by a qualified person.


The most common reason for pressure loss is leaking. The leak can be anywhere in the central heating circuit and identifying the source of the leaks can be difficult at times.

See Also: Boiler Losing Pressure No Leak

If you get in touch with us at 2 RED, our technician will take time to locate the leak. We don’t mind get on our hands and knees, feeling the pipework and the radiator and in tight spaces to find the leak. It is important to note that even the smallest leak can have a huge impact on the pressure level. Also, if the leak is not repaired, it only gets worse over time.

Burst or Discharged Expansion Vessel

Once water is heated, it expands. This increases pressure within the system. The expansion vessel is designed to accommodate the increase in pressure and prevent undue stress on the rest of the system.

The design of the expansion vessel includes a balloon that is pre-charged to 1 bar. In the course of time, the balloon loses the charge. This is easily corrected during the annual boiler service. If the balloon is allowed to lose all of its charges, it can burst which results in costly repairs and increased pressure in the boiler.

It is important for the expansion vessel to be kept functioning properly to allow for proper regulation of pressure. Get in touch with us today for proper boiler servicing and also to recharge your expansion vessel.

Faulty Safety or Pressure Relief Valve

In most cases, the failure of the safety valve or pressure relief valve is because of over pressurisation caused by the failure of the expansion vessel.

The safety valve Is designed to open automatically every time the pressure reaches 3 bar. Eventually, the valve might not close because debris from the system obstructing the valve. If the valve does not close properly, it can leak or weep to cause a pressure drop.

We can help correct the problem during boiler service by replacing the valve.

If you’re concerned about your boiler losing pressure, it could be because you don’t give it enough attention during servicing. For comprehensive and competitive boiler repair, get in touch with us today. We can guarantee an all-round check-up for your boiler and make sure that all the parts of your boiler receive the attention they need to keep working longer and more efficiently.

Boiler Working But No Hot Water

If your boiler is working but you have no hot water, there is a long list of items you can check to identify the problem and resolve it. You might find out that it is something you forgot to turn on. Because of this, it is best you do a quick preliminary check before involving any experts.

Flow rate

In cold weather, the flow rate of the water can deep. You might think your boiler is not working but the problem is actually the low flow of water over the heat exchangers. To know if this is the problem, you can run the hot water tap but only at a trickle. If the problem is the flow, it does not require immediate repairs. You might have to wait until the weather warms up a bit.

Check the boiler

If the water flow passes, you need to check the boiler. First, make sure that power is getting to the boiler and that it is working. Check the lights at the panel. Check the timer and other components and make sure they are working properly. Also, look at the pressure gauge to make sure nothing is wrong. If the pressure is fine, it should be at 1 bar.

See Also: Boiler Pressure Keeps Dropping to 0

You can also try to feel the pump. But, we strongly advise against taking the boiler cover off to check on the pump. This should only be done by qualified engineers who are trained and registered by Gas Safe.

Check the timer

Your boiler might stop working because the timer is wrong. Time could move forward or backwards and if there was a power cut, it could have reset the timer. Check the timer to make sure it is set up correctly. If it is not, you can adjust it and see if that fixes the problem.

Check thermostat and pilot light

If the thermostat is turned down or off, it can explain why you have cold water coming out of the taps. You might have forgotten to turn it back up when you came back home. Next, check the pilot light which should have a crisp blue colour. Once you have ascertained that these are working well, you can move to the next step.

Turn everything all the way up

Try to kick the water heater into action by turning up the radiator and the water temperature. If this does not work, check the expansion tank and the feed. If you have an open-ended tank, you can check the ball valve float to make sure it is not stuck.

Finally, if everything else fails, try switching the system off and on again to see if it is going to pick up. You need to give it a couple of minutes. This should reset the appliances and if there was something that was not working properly it should be able to work now.

Call in the experts

If all the checks don’t work, you can get in touch with us. We will send a qualified member of our team and a Gas Safe registered engineer to look at the system and get the hot water flowing again.

Ways to Ensure Your Boiler Lasts Longer

The life expectancy of your boiler depends on a variety of factors. If you have a traditional gas boiler then the average expectancy is between ten and fifteen years, but only if it is well maintained and you have it serviced annually. If you have an electrical boiler it will last between eight and ten years. If at all you have a superior quality boiler, it can last for twenty years with proper maintenance. To help ensure that your boiler stays working effectively for as long as possible, here are a few recommendations.

Buy a reliable boiler

To ensure that your boiler stays working for a long time, you have to start by buying a high-quality boiler. A high-quality boiler needs fewer repairs and is more likely to remain fault-free longer after being installed. If you choose the least reliable boiler brand then it is most likely to break down frequently making you use more money repairing it. If you’re not sure of the best boiler to buy, our experts at 2 RED can help recommend the best boiler based on your budget and needs.

Ensure all services are carried out by an eligible engineer

It is important to get the right person for the installation. You can get in touch with us for quality boiler installation services. Our engineers are highly trained and have many years of experience. By getting a well-qualified engineer to conduct the installation in your home, then you can rest assured that the job will be completed thoroughly and professionally. Having an unfit engineer install the boiler for you, can lead to problems like pipe leakages and damaged parts that are expensive to replace.

Monitor your central heating

Keeping an eye on your home’s heating could help you identify any changes or faults early on. This could help prevent any serious damage from happening. If you notice any problems, it is best to get a qualified engineer to look at the system to prevent the problem from worsening.

See Also: Boiler Working But No Hot Water

Adding water

Corrosion can reduce the life expectancy of your boiler. Corrosive elements which attack the equipment can significantly lessen the efficiency of your boiler to function effectively make it more prone to breaking down. Eventually, it will require you to replace your heating system. You can avoid this by adding water chemicals to your system which will keep the corrosion down. You can consult with 2 RED experts on the best additives for the boiler we can also help you add them.

Arrange repairs

Postponing your central repairs is never a good decision. Some problems such as a build-up of sludge in your system could aggravate over time. No matter how small the problem with your boiler is, overlooking it will only make it worse and more expensive to repair. It is best to frequently get it and maintained by our professional engineers. Some boilers have a ten-year warranty so you can call the company on a yearly basis. Upholding a healthy, efficient boiler by frequently repairing it, could help it last much longer.

To get your boiler to last for a long time, you will definitely need the help of a reliable boiler company like 2 RED and also make sure you buy a reliable brand.

Boiler Making Noise When Switched Off

For most homeowners, any noise from your boiler is a cause for alarm. No matter how little the noise is, whenever you hear it, you can’t help but keep wondering what could be causing and if it is dangerous.

One of the more concerning is noises is a buzzing or gurgling sound that comes from the boiler even when you have switched it off. It is more concerning because the boiler is off so you don’t expect any noises.

There are a variety of reasons that could be causing the noise. Our experts have diagnosed a number of cases and even though the findings are not alarming, you need to have the boiler checked either way.

Air in the system

The most common reason for the noises you might hear in your boiler after you have switched it off is air that is trapped inside the boiler. if the cause of the noise is the air, it will always sound like rushing water.

If air is trapped inside the system, once the boiler has been switched off, the air is going to be pushed around by the circulator. If the air has worked its way into the boiler, you will also hear some clunking noises.

See Also: Ways to Ensure Your Boiler Lasts Longer

Even though the situation sounds dire, the fix is quite simple. You could have the problem rectified by simply bleeding the system. If this does not help, then it might be a good idea to call in our experts at 2 RED to have a closer look at the system.

Faulty thermostat

The other reason your noise could be coming from your boiler when it is off as a result of a failing thermostat. Ideally, when you switch off the boiler, the circulating pump should continue running until the water cools to a certain temperature.

There is a thermostat that should notify the pump when to stop working. If the thermostat is not working properly, it will not relay the right information to the pump. As a result, you can hear noises coming from the boiler even when it is switched off. Our experts can help you identify the faulty thermostat and get it working properly again.

Faulty valve

A dodgy valve could also be to blame for the noisy boiler. Even though is slightly rare, a failing valve can also cause the circulating pump to keep working even when the boiler has been switched off. The movements of the pump could be what is keeping you up at night.

When it comes to boilers, you can’t help but think the worst of any unusual noises. You always want to know how serious it is and how soon you can have it looked at. Having the boiler and the central heating serviced regularly can prevent some of these noises. It can also help to identify failing parts and replace them in good time.

Even for the case of noises made by your boiler when it is switched off, our maintenance and service team can help avoid such incidence. For comprehensive service and maintenance of your boiler, give us a call today.

Boiler Losing Pressure No Leak

Most times, loss of pressure in a boiler is as a result of a leak. However, in some cases, your boiler might be losing pressure but, it doesn’t have a leak.

If this happens to be the case, then there is a list of problems you can check that will point you to what could be causing the loss of pressure. In most cases, it is best to leave this kind of work to the professionals. You can get in touch with us today and we will have a qualified engineer at your door in no time.

Faulty Pressure Relief Valve

Ideally, the boiler should operate between 1 bar to 1.5 bar. If there are problems with the boiler, it can go as high as 3 bar. The pressure release valve should notice this problem and open to release the extra pressure. If this valve fails, it can cause the boiler to lose more pressure.

Auto Air Vents

Over the years, your central heating can collect air pockets. To get rid of this air pockets, you can vent the radiators. The new combi boilers also come fitted with auto air vents that help to resolve the same problem. The auto air vents are usually on the inside casing of the boiler.

See Also: Boiler Making Noise When Switched Off

If the vent is faulty, it can cause the boiler to lose pressure. If you suspect this could be the problem, it is important that you let a trained and qualified person look at it for you.

Air in the Radiators

This usually happens after the central heating has been serviced. Air might have collected in the towel rails and the radiator. To fix this, you can use the bleeding key. All you need to do is open the vent slightly using the key. As soon as the air starts coming out, you will hear a hissing sound.

This needs to be done for every other radiator and towel rail in the house. While doing this, you might want to have a rug or towel to collect the water and avoid damage to the carpet.

Faulty Expansion Vessel

Another area of concern you need to consider when looking into why your boiler is losing pressure without leaking is the expansion vessel. The vessel needs to be re-pressurised every once in a while. If it is not, it could affect the pressure of the boiler.

Another cause of loss of pressure with regards to the expansion vessel is a faulty Schraeder valve which could be leaking causing loss of pressure. If you re-pressurise the expansion vessel and that does not take care of the issue, the next practical solution is to replace the valve.

Faulty Pressure Gauge

It is possible that your boiler is not losing pressure at all. Your pressure gauge could be faulty and giving you the wrong readings. As absurd as this might sound, it happens to be the case quite often. If all of these checks don’t identify the problem, then it could be the pressure gauge that is faulty.

It can be frustrating trying to understand why your boiler is losing water. With our experience and training, we can make the process of troubleshooting easier and more fruitful. We can also help carry out the necessary processes to resolve the problem.

Cost of Moving a Boiler

Are you thinking of moving and you would like to take your boiler with you? You must be wondering how much that is going to cost you. Is it cheaper to just buy a new boiler? well, unfortunately, there is no single figure to how much moving a boiler will cost you. There are many things that are considered and many factors that affect the cost of moving a boiler.


The first factor that has to be considered is how far you would like the boiler transported. This can cost you between £350 and over £750. If you’re paying £750 or more, the cost includes intensive pipework that will be done when installing the boiler at the new location.

Type of fuel

When considering the cost of moving the boiler, the pipework and the preparation required to move the boiler take much of the costs. The fuel does not matter. However, the weight of the boiler might be a problem. If you own an oil boiler which typically weighs over 100Kgs, it will require more people and logistics to move compared to a gas boiler. That means moving the oil boiler is going to be more costly.

Materials used and time taken

If the job takes more time and requires more resources to be completed, the cost will be higher. If you only need to move the boiler a few feet, it should not cost you much. However, if you want the boiler moved significantly like into the loft, upstairs, into the garage or another room, it will cost you more.


For boilers, only copper pipes can be used. They are not cheap. You will also need to pay for the fitting time as well. As the pipework is being done, other items like extensions and additional flues will also affect the cost of moving. It is worth considering the type of flue. For instance, for Worcester, the vertical flues cost £100 and each extension costs about £45-£55.

Additional work

There is more that goes into moving a boiler than just the pipework and the transfer. You have to consider other jobs like drilling holes for the pipes and flue, patching up the holes, lifting and relaying floorboards. All these are factors that will affect the cost of moving the boiler.

To put it in simpler terms, the more the work required to get the boiler working in its new location, the more it is going to send you.

See similar post: Symptoms of Faulty Boiler Thermistor

The fitter

It is worth mentioning that different fitters will also charge you differently. At 2 RED we give quotes before the actual job is done. It allows you to compare the prices with others and you can pick the most affordable.

Sometimes considering the cost of moving the boiler, it might be advisable to replace it instead. But, this is only advisable if the boiler in question is old and worn out. If the boiler is still new and under warranty, it is best to move it instead.

If you need help deciding on the best approach, get in touch with us today. Our qualified professional will give you professional and unbiased advice on the best way forward.

Symptoms of Faulty Boiler Thermistor

There are many different components in your boiler. Like any other piece of electronic, any piece can easily fail. The Thermistor is one of them. If you notice your boiler not being able to detect when to stop heating water or has problems with heat regulation, it is possible that your thermistor is not working. There are many problems that contribute to the failure of the thermistor. These include;

Limescale build up

Lime-scale builds up when you have hard water, the minerals in that water can cause problems for your boiler. The scale looks like white particles and can get attached to the heat exchanger. The symptoms of lime-scale build-up are noises. You might notice uncommon noises coming from your boiler. Normally you would expect to hear kettling or even whistling. Kettling is when your boiler makes banging or popping noises when turned on.

Boiler lockouts

Your boiler is normally fitted with an NTC thermistor. The flow pipe thermistor monitors the temperature of the water exiting the boiler. If the water temperature is too high, then it will lock out. The water temperature becomes too high when the heat exchanger develops lime-scale. The thermistor recognizes the water temperature is oddly high and shuts the boiler down.


Most boiler leaks are caused by corrosion. Corrosion occurs because the boiler is weakened due to the frequent exposure to water at varying temperatures. Corrosion weakens the pies and tanks over time, eventually leading to leaks. Failure to address corrosion issues as they happen could lead to extensive damage throughout your boiler. Usually, corrosion will prevent itself in a valve or pipe that is easily replaceable.

Excess heat

Usually, boilers overheat due to the failure of safety controls that maintain the gas and water supply, the temperature and the pressure. When the boiler starts to overheat, the interior components of the boiler are put under immense pressure and are likely to suffer from irreparable damage. This is a very dangerous condition for you and your family.

Dirty water when bleeding radiators

Bleeding radiators is when you let out air that has become trapped inside. Trapped air causes the radiators to have cold spots, reducing their efficiency. If you have bled radiators then you will notice that after the air is released, water is released. If the water being released is black, then that is a sure sign that your boiler thermistor has a problem. If it is not repaired quickly, the water can lead to blockage of your boiler.

See similar post: My Boiler is Making Banging Noises

Blocked or frozen condensate

If it is particularly cold outside, with visible frost, and your boiler is refusing to turn on, it could be a sign that your condensate is frozen or blocked. Frozen pipes are dangerous as they can cause major damage to your boiler. One of the symptoms is lack of running water out of the faucet. At times there may be an odd smell coming from your drain. If the pipes are blocked, the only way for the odour to escape is back up in the direction of your property.

Regardless of what the cause is, your thermistor needs to be replaced. It is important that this is done by a qualified person. Get in touch with us today and we can assist you to replace the thermistor and get your boiler working properly again.

My Boiler is Making Banging Noises

You have every right to be worried if your boiler has banging noises. In most cases, you must be worried if the problem is dangerous and what could happen.

Banging or popping noises from your boiler is not a normal phenomenon. If you notice such sounds, it is important that you get in touch with our professionals at 2 RED to come and examine the system.

To help you understand your boiler better, there are two main reasons why your boiler could be making the loud banging noises.

Delayed Ignition

There are two types of banging noises that can come from your boiler. The first is when the boiler is firing up. It happens only once and after the boiler has fired up, there are no more noises. This is usually associated with gas boilers and happens as a result of delayed ignition.

During ignition in gas boilers, a small amount of gas is injected into the combustion chamber, the gas is then ignited by pilot lights. When the boiler has a problem igniting, the gas injected into the combustion chamber accumulates. Once the pilot light ignites the gas, there is a mini explosion in the chamber. This is the banging noise you hear.

If your boiler has delayed ignition, get in touch with us today. We will send a technician to your location to identify the problem that is causing the delay in ignition.


The second and more concerning type of banging in boilers is recurrent. It is as a result of Kettling. In this case, the banging noise might also be accompanied by popping sounds.

Unlike in the case of delayed ignition which affects gas boilers, Kettling affects all kinds of boilers. Kettling happens when the heat exchanger in your boiler gets too hot. When the water touches the exchanger, bubbles rise and drift into cooler where they burst and create the popping sounds you hear.

Kettling is caused by a variety of factors. The most common is limescale which is common in areas with hard water. The limescale layer builds on the heat exchanger. It creates a barrier between the water and the exchanger. This makes water flow slower and the burner stays on longer.

Kettling can also be caused by low water pressure. If the water is flowing slower than it should, the burner gets hotter. Other factors include a bad thermostat or setting the water temperature too high on the boiler.

See similar post: Water Dripping from the Boiler

What should you do

Whether the banging happens during startup or it is recurrent, it is important that you have a professional look at your boiler. 2 RED offers a variety of services that can help solve any problems with your boiler including the banging.

Give us a call today and we will have a qualified technician at your door ready to assess your boiler and provide you with the most practical and lasting solution. It is important that the banging is addressed as soon as possible to prevent further damage and more costly repairs.