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Case Study: Boiler Service in Dorset


Last week, a homeowner in Poole contacted me for his annual boiler service. I asked if there were any problems he had experienced that I should be privy to. He mentioned that it was taking much longer than usual to get hot water and after running a test, some radiators were not warming up a room sufficiently.  I assured him that I would be at his property within the hour to conduct the service and attend to any faults. 

I got to the client’s home in 45 minutes despite some light traffic. I started by running the boiler to pinpoint any issues and the first thing that struck me was the noise being produced. It was not very loud and might have even gone unnoticed but it was an indicator of a common problem for boilers.



 I also opened up the boiler to check the fan air pressure and the gas pressure. The fan air pressure was quite low and this might have been the cause of the sub-optimal operation. I looked closely at the spark electrodes and realized they had oxidized thus cleaning them would not help much. The best option would be a replacement. When I looked at the heat exchanger, I noticed there was limescale buildup which is why the fan air pressure had dropped significantly. Boiler repairs in Dorset often entail sludge or limescale removal due to the hard water in the area. I connected the boiler to a power flush machine which helped clear the limescale from the primary heat exchanger. The limescale in the plate heat exchanger was cleared using a chemical cleaning solution. After 3 hours, the entire process was complete and we fired up the boiler for a test. Not only had the “kettling” subsided, but adequate heat was coming from all the radiators in the property.


Boiler cost Bournemouth and Poole

Boiler installation cost Bournemouth and Poole

Getting a boiler can be a daunting process for homeowners, but we want to make it as stress-free as possible for our  Bournemouth and Poole residents. Some boiler installations are priced too low which leaves you questioning why they are so cheap, while others might try to rip you off. And as the price of purchasing and installing a boiler is one of the most important elements in deciding which supplier or installer you go for, we thought we should provide you with the average cost of boilers throughout the Bournemouth/Poole area.

The price of a standalone combi Boiler

These are typical standalone prices we have seen, based on local research and years in the industry.


  • A budget standalone Combination boiler such as an Ideal Logic Combi C24 is likely to start from £750 in Bournemouth. The warranty is an important factor to look out for and this type of boiler, as it only sits around the 2-year mark.
  •  A mid-range boiler such as Worcester Bosch Greenstar 28CDi Compact comes with a warranty of up to 10 years and prices start from £1000. 
  • A premium boiler with more output such as the Viessmann Vitodens 200-W B2KE 35kW starts from £1600 and also has a 10-year warranty. 

Poolecost of a boiler in bournemouth

Boiler prices in Poole are on average slightly higher but still reasonable. 

  • The budget boiler would for instance start at around £800, 
  • The mid-range boilers such as the Worcester Bosch Greenstar 28CDi Compact would start at £1100 – £1200
  • A Premium boiler such as a Viessmann Vitodens 200-W B2KE 35kW would start at around £1700.
In case you are wondering what a combi boiler is, this is an advanced boiler that works without a hot water cylinder, therefore, provides instant heat. It efficiently serves houses with up to 2 bathrooms and 10 radiators.

Standalone System Boiler Price

If you have a larger house with more bathrooms, then you might consider getting a system boiler. 



  • A simple standalone system boiler in Bournemouth such as a Baxi 618 18kW starts from £839 and comes with a 7-year warranty.
  •  A similar mid-range boiler with a 7-year warranty, such as a Vaillant ecoFIT Pure 618 starts at £1058. 
  • Premium boilers such as the Viessmann Vitodens 200-W B2HE 32kW with a 10-year warranty are likely to start from £1650. 


  • Once again, the boiler prices in Poole tend to be higher in most areas. For instance, a simple 18kW boiler such as the Baxi 618 18kW might have prices starting from £889. 
  • A mid-range boiler such as the Worcester Greenstar Life 35kW has a 12-year warranty and costs around £1357

Standalone Conventional Boiler Price

Conventional boilers are ideal for very large properties or where multiple bathrooms are often used simultaneously. 


  • Simple conventional standalone boilers such as a Baxi 430 Heat 30kW start at £800 in Bournemouth and comes with a standard warranty of at least 5 years. 
  • A mid-range conventional boiler such as a Worcester Bosch Greenstar 18Ri starts at £870 and comes with a 10-year warranty. 
  • A premium boiler such as a Viessmann Vitodens 100-W Compact WB1B 26kW with a 10-year warranty starts at £950 in Bournemouth. 


  • Most Baxi 400 Heat boilers range from £850 to £940 in Poole.  
  • A conventional boiler such as a Worcester Bosch Greenstar 18Ri starts at £900 and comes with a 10-year warranty.
  • A top tier Viessman boiler starts at £1105. It is unlikely to find such boilers priced above £1110.


Boiler installations prices in Bournemouth and Poole vary between £999-4000 depending on the project scope and the location. Typically installers will charge slightly more for Poole residents. Although at Senior Plumbing and heating we keep our prices consistent throughout.

We would typically suggest to stay clear of any installers which offer very cheap prices, as often they won’t have had the experience to make sure your boiler is going to be running as efficient as possible, which will only cost you more in the long run.

To give a rough ballpark of installation costs: 

  • Budget combi installations: £999-£1400 
  • Mid range combi installations: £1400-2200
  • Premium combi installations: £2200-3400

System or Regular boilers are going to be similar prices, but the job will vary greatly depending on the requirements. Typically they will range anywhere between £1,700 – £4,000.

What impacts the installation price 

  1. Flue exit – If you have a round horizontal flue, then you might not have a significant additional cost. If, however, your home requires a vertical flue or you need to brick up a square flue, then the costs might go up. If your project involves a flue alteration, then the cost in Bournemouth and Poole is likely to range between £300 – £500 depending on the scope. 
  2. If a replacement is taking place –  prices are likely to go up considering the labour your engineers will require in pulling down the previous boiler and installing the new one. 
  3. A boiler conversion – this could be costly, especially if the project involves decommissioning the previous boiler to install a different one. In this case, a new flue might have to be installed and some alterations involving the plumbing such as the feed tanks will have to be made. 
  4. Hot water cylinder installation – If you are upgrading from a Combi boiler to a Conventional or Regular boiler, then you might need a hot water cylinder for storage. Hot water cylinders in Bournemouth and Poole start from £300 with premium cylinders starting at £500. In both towns, it is very rare to find a cylinder priced above £1000. 

Hopefully this give you a good idea the rough prices installers and suppliers offer throughout Dorset and in particular Bournemouth and Poole. As stated previously, we never fluctuate on price, so if you want an upfront free quote for a top quality installation give us a call

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Customer story, Boiler repair in Bournemouth BH3

Last week, a customer from Bournemouth on Roslin Road (BH3), called up as they were having issues with their boiler. They were unsure if it was a boiler repair or boiler installation that they needed. On the phone, she informed me that they were experiencing a rumbling and whistling sound from their boiler. I asked if it sounded like the noise that a kettle makes and she said that it did. I knew from this that their boiler was kettling and this was what was causing the issues. 


I explained that the water inside your boiler should not reach boiling point. It starts to boil if the water passes through the flame too slowly. This is caused by a blockage in the pipework. You will hear the result of this when the boiler starts to make sounds that are similar to a kettle boiling. We booked her boiler repair service for the next day. 


When I arrived to inspect the boiler, I knew that there was a build-up of sludge blocking the system and raising the temperature of the water inside. This is most likely caused by a build-up of magnetite – an iron-based chemical that wears off the insides of radiators. To fix the issue, I took apart the heat exchanger and cleaned it to clear the blockage. The water then started to flow freely through the pipes and stay at the optimum temperature.

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Customer story, Boiler Service BH15

boiler service worcester

We always suggest an annual boiler service for the customer’s peace of mind. But it’s more than this; it can also prolong the life of your boiler. We installed a boiler in a house in Poole, BH15 two years ago. At the time, we suggested that they do a boiler service for their Viessmann boiler every year, to get the most out of their boiler and save them money in the long run. Last week we carried out their second annual service. 

When we got to the location, we checked for general leaks and damages – there were none. We then checked the controls and pipework and removed the case to check the main heat exchange. Our next step is to check the flues. Here, there was a little more build-up than we expected. We gave this a chemical clean to make sure that all is running smoothly. It was lucky that the customer got this service when they did as more build-up like this may have lead to a repair, or even an installation in a couple of years time. 


The whole process took under an hour. We booked them in for their next service in a years time. 


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Seven Most Common Boiler Repair Callouts

boiler repair bournemouth

Boilers are an integral part of creating a comfortable and cosy home. But just like any other system, boilers can experience faults. These faults call for professional boiler repair callouts. 

Modern-day boilers are programmed to give you an alert when they are experiencing a problem ensuring that you get professional boiler repair Bournemouth services. 

In this blog, we will discuss the most common boiler problems. 

Kettling boiler

If you have been hearing unusual noises from the boiler that sound like a whistling kettle, chances are your boiler is kettling. This problem occurs when sediments or sludge builds up in the boiler. 

The best way to solve the problem is to call a gas safe engineer to flush out the sediments and make sure your boiler is functioning efficiently again.

Boiler leaks

If your boiler is leaking, this is not a good sign. Boiler leaks can happen for different reasons, for example, broken pressure valve, broken pump seal, and more. 

Don’t attempt to repair the boiler leak by yourself. Always call a certified gas engineer Bournemouth for boiler repair services. 

No hot water or no heat

Your boiler is supposed to provide hot water and heat to your home. If it is not doing this, it can be due to a combination of problems. 

Calling a professional gas engineer is the best way to find the issue that is causing the lack of hot water. They will rectify it efficiently.

Reduced boiler pressure

Usually, your boiler must maintain water pressure between 1 and 2. If you notice the pressure drop below 1, this might be indicative of a bigger issue. 

Check for any water leaks to determine why your boiler is not able to maintain good pressure. Don’t hesitate to call a gas safe engineer for identifying and rectifying the issue. 

Switching off of the boiler

Does your boiler switch off itself? If so, it can indicate numerous issues such as sedimentation or reduced water pressure. These will need professional boiler repair services to sort.

Sometimes, your boiler might switch off if it is not responding to the thermostat. If this is the case, you can look for temperature settings on the thermostat, connection to the Wi-Fi, or just give a call to the professional to correct these issues. 

Cold Radiators

Your boiler is supposed to provide heat for your home. But, if you find that you have cold radiators, there might be a fault with your boiler. 

If you find that your radiator is cold from the bottom, the standard procedure is to bleed the radiator. Usually, you can do this procedure on your own but if you feel that you need expert assistance, don’t hesitate to call a professional.

If you find that some parts of your radiator are not heating, just balance the radiator. This can also be done yourself, but if you don’t feel confident, calling a professional may be the best solution. The professional will also give you a radiator balancing guide that will help you in the future if the problem arises again.

But, if you have tried bleeding and balancing your radiator but it still does not heat up, there could be an issue with your boiler. This could be due to the development of sludge. If this is the case, you must call a professional gas safe engineer and they will flush out the system to remove any sludge. This will start to provide heat to your radiators and the rest of your home.

Frozen condensate pipe

If you have a condensing boiler, it will have a condensate pipe. You can find it installed on the outside of your property but this makes the pipe prone to freezing. To avoid this, call a professional who will help you insulate the pipe to prevent it from freezing. This way your boiler can be up and running even during winters. 


These are the top seven most common boiler repair issues that require a call out to a professional company. If you want expert assistance, give us a call at Senior Plumbing & Heating. 

We are based in Bournemouth and Poole and have years of experience in tackling boiler issues and faults. We have a licensed and professional team of gas safe engineers who will ensure that your boiler is up and running in no time.

Apart from scheduled appointments, we also provide emergency callout services. We are available for our customers 24/7. Apart from boiler repair service, we provide regular boiler maintenance services and new boiler Bournemouth installation services too.

So, get in touch with us at Senior Plumbing & Heating now for efficient boiler repair callout services. 



How do boilers work?

Even though every home has a boiler, few people know how they work. But, this is a disadvantage if something goes wrong and you don’t know what has happened, or how to fix it. Learning about boilers can also be handy when you are wanting a new boiler installation – you will be able to know what type you want and what price range you will be looking at. This is why we thought we’d share some of our knowledge and give you the basics.

Ultimately, your boiler is what sends hot water through your pipes, into radiators and through your taps. They are therefore necessary for a warm house and hot water.  This is the basis for all boilers, but the way that they work and the different elements they are made up of differ.

Conventional or heat-only boilers

This is the traditional way that heating is provided in all homes before the 1970s. It is made up of a cold-water tank and a hot water cylinder. This is where the water is stored.

When your hot water is needed, you turn the thermostat on, turning on the boiler sending water to a pump. This then travels to a 3-port valve which tells the water where to go – either for hot water or heating. It then goes to either the radiator or the to tap and then back into the boiler in a constant circuit. 

The water comes from a tank in the loft; there is one tank for cold water and one for hot.

These conventional boilers can be fitted with an immersion heater as a back-up. This way, if there is not enough hot water, or your boiler has broken down and in need of a boiler repair, more can be heated and used. However, it does take time for the heater to warm up, which may cause an inconvenience.

Because the system needs two tanks, it can be problematic if in a smaller home, as the tanks take up valuable space.

System boilers

These work the same as a conventional boiler but saves space because all the parts of a conventional boiler are inside the system, making installation quicker and easier. This is also because there is no need for a separate cold-water tank. Not needing two different tanks saves storage space. Water is heated and stored in a tank, which is usually in the airing cupboard.

Water in this cylinder can be sent to many different sources, so you can use sinks, baths or showers at the same time. This makes system boilers ideal for larger homes. 

You are able to set timers for system boilers, so you can choose when you want to use the hot water. Like conventional boilers, if you need extra hot water, it takes time to re-heat the tank. 

Combi Boilers

Instead of having a heating system with a big tank, and an indirection boiler or a heating element inside, the combi boiler heats the water used to heat the house and the water used for washing at the same time.  It does this because there are two independent cylindrical heat exchanges – one linking to the radiators and one connecting to the hot-water supply.

The system contains a plate heat exchanger. This has a high heat recovery so it transfers heat from one body of water to another very quickly.  Cold water from cylinders enters the plate heat exchanger in pipes that run amongst each other and heats up. The two different sources do not mix. 

When you turn on the tap or its time for your central heating to be on, the boiler burns gas, causing the heat exchanger to heat up, heating either water from the water cylinder, or the one for central heating.

A benefit of using combi boilers is that you don’t have to heat up large amounts of water. Most system boiler tanks use 100L of water that store both. Combi boilers only use 35L.

Another advantage is that combi boilers do not time to warm up. This means that unlike conventional or system boilers, you can have hot water instantly.

Now that you know more about how the different types of boilers work, you can decide which type is right for you. So, if you are looking for a new boiler in Bournemouth call us today – At Senior Heating and Plumbing, we have a range of Viessman boilers . We also carry out boiler repairs and boiler services around Poole and Bournemouth, so give us a call for a free quote or advice.

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How Long Do Boilers Last?

There’s no denying the importance of boilers. In these cold and chilly winter months, they’re probably the most integral household feature – the heartbeat of your home. They keep the entire house warm, ensure rooms are cosy and welcoming, while pumping hot water to all of the radiators. 

Your boiler is the star of the show at winter. Such a key feature requires ongoing attention and a watchful eye. This is to guarantee your boiler is functioning to its optimum ability and not costing you excess amounts of money. It’s up to you to make sure yours is running in tip-top order – and one way of doing this is by working out how long your boiler is expected to last. 

So, how long can I expect my boiler to last?

Well, on average boilers last between 10 – 15 years. Of course, this is all dependent on the size of your boiler, its efficiency, and how well you look after it. If you’ve just installed a brand new boiler, you may be thinking: ‘great! I don’t have to worry about mine for another ten years.’ 

Unfortunately, this isn’t the case. As nice as it would be to close the door on your boiler and not have to worry about it for a few years, as a homeowner you can’t afford to do this. Boilers can be temperamental. We rely on them a lot, which means they go through a lot, and subsequently, a lot can go wrong. 

Boilers need attention. So, we recommend getting an annual check-up to make sure yours is in perfect condition and not costing you considerable amounts of money. 

How do I find a boiler that lasts longer?

Think of buying a boiler like buying a car. It demands plenty of research and thorough planning; you need to find one that’s perfect for you and your family, tried and tested. To help you find a boiler that’s guaranteed to last, we’ve put together a list of things you should do when you need a new boiler installation. 

  • Select a Boiler That’s Reliable and Efficient 

Look for well-known boiler brands that are proven to work. Unlike other things in life where you may choose to experiment or try the latest styles, it’s always best to stick with a tried and tested boiler. Brands like Worcester Bosch, Ideal and Vaillant are always safe options. 

These types of boiler have been around for years and are fit for homes of all shapes and sizes. Nearly all boiler engineers will also be familiar with these brands, making your installation a much smoother process. When it comes to looking for boilers that stand the test of time, stick to legitimate and trusted brands. 

  • Choose a Boiler Fit for Your Home 

It’s vital you pick a boiler that meets the demands of your home. When selecting yours, make sure you choose one with the right kWh output. This is very important, so pay close attention: 

If your boiler’s kWh output is too small, you’ll only put excessive pressure on the system and increase the risk of frequent breakdowns. On the other hand, a boiler that uses excessive boiler power will only see you use more energy than you need – expect your bills to rocket. 

When buying a boiler, make sure you consult with the engineers and choose one that’s perfect for your home. Consider the size of your home, the number of rooms and how often you’re likely to be using the heating. All of these will help you make a much more informed decision. 

  • Make Sure You Get a Gas Safe Registered Engineer to Install Yours

A boiler installation is not something you can afford to cut corners on. That’s why it’s essential you get a Gas Safe Registered Engineer to install yours. Boilers can be dangerous if installed incorrectly. If you go for an unregistered plumber, you risk your boiler leaking and potentially letting out carbon monoxide. 

Take the safe route and get a fully qualified engineer to fit yours for you. This will rule out all possible health risks and also save you considerable amounts of money down the line. 

  • Organise an Annual Service 

This is probably the most important thing of all. Think of it like a dentist appointment. As much of a hassle as they can be, we all need them. An annual service ensures that everything is in running order and safe. 

If you don’t arrange these check-ups, you risk a minor problem turning into a major issue. The smallest of leaks will only get bigger as time goes on – costing you serious amounts of money and increasing the chances of a carbon monoxide risk. The easy option: arrange an annual service. 

This is also the same for repairs. If you notice something is wrong, don’t wait around. 

When should you replace your boiler? 

As we mentioned before, the 10 to 15-year mark is usually the point when it’s time to get a new boiler. Even if yours appears to be performing as normal, it’s likely its efficiency rates have diminished over time. 

No matter how proud of your boiler you are, when they get to this age, they start to cost more money than they’re worth. A much better option is to look for a new one. 

If you’re unsure whether your boiler is on its way out and need help to make a decision, here are some tell-tale signs to look out for that suggest it’s time for a new boiler installation: 

  • Frequent breakdowns
  • Unusual noises 
  • Strange smells
  • Leaks 
  • Radiators taking a long time to heat up 
  • High energy bills 

Sadly, boilers don’t last a lifetime. The average lifespan is 10 to 15 years, but that’s not to say you can neglect yours until then. Boilers need regular attention to ensure they reach their sell-by date. If you think your boilers on the blink, please give us a call. 

We’ll provide you with a free no-obligation quote and send out one of our engineers to assess what needs to be done. 


How often should I get a boiler service?

How often should I get a boiler service? 

You’ve just installed your brand new boiler. A sparkling installation from start to finish, hassle-free and everything is going according to plan. You sit back content, knowing you don’t have to think about your boiler for another 10 years – you’ve made it. If only it was this simple. 

The fact is, boilers need regular attention. They play a major role in your home: the power station for both your central heating and hot water. Such an important feature needs checking in on from time to time. If you don’t, you risk spending considerable amounts of money much further down the line.

Boilers are like cars. We depend on them a lot, but the majority of people don’t have the faintest clue what goes on under the bonnet. This is why boilers need to be checked-up on by experts, who know what they’re doing. We advise all boilers to be serviced once a year by Gas Safe registered engineers. You may be thinking: ‘what’s the point?’ Well, there are plenty of reasons why, but we’ve decided to whittle them down to three – which hopefully should have some backing as we are experts in executing a boiler service Bournemouth.

Boiler Safety

As with all things, safety is paramount. Your boiler may be tucked away, out of sight. But when things start to go wrong, you’ll definitely know something isn’t right. There are a number of things that can be incredibly dangerous if you don’t have regular check-ups, like: 

  • Gas

Gas leaks are rare, but things like corrosion, poor installations, wear and tear or electrical issues, can all lead to the dreaded gas leak; running the risk of explosions and potential carbon monoxide poisoning. 

  • Water 

Your boiler usually contains water up to 70ºC. Any leaks or bursts can cause serious damage to both your home or people nearby. We don’t like to scare people – and more often than not these things rarely happen – but boilers need check-ups to rule out the smallest potential risks. 

  • Electricity

We recommend all boiler services check all electrical appliances associated with the boiler. If there’s an electrical issue, sparks may occur and as we know, sparks and gas are a no-go zone.

  • Efficiency

Nothing stays brand new forever. Boilers will gradually become far less efficient and effective overtime – but if you don’t check, you’ll never know. An annual check-up ensures your boiler is working to its optimal capacity; not costing you serious amounts of money.

  • Warranty

The average boiler warranty lasts up to 10 years. This is usually an agreement between the homeowner and the boiler installers, that if anything is go wrong in this time, they’ll send out a boiler engineer to fix or replace the problem. It’s a great deal, as long as you do one thing: get an annual boiler service. If you choose not to, then you risk breaking the terms of the agreement and losing out on your warranty.

It’s worth mentioning that electric boilers don’t require the same level of care, but you should still get yours serviced every once in a while. 

Good times to get your Bournemouth boiler service

Carrying out boiler servicing Bournemouth it is a quiet task during the summer months. So, we’ll let you in on a little secret as to why it’s the best time to get your boiler serviced.

  1. Installers and boiler engineers have more available slots in their diaries during summer. Hot weather and boilers simply don’t go, which means engineers have far more spare time.
  1. Getting your boiler serviced in the summer also means you can go into winter full of confidence, knowing your boiler isn’t about to breakdown at any moment. 

If this has inspired you to get your boiler serviced, then don’t hesitate to get in touch. As the number one heating engineer in Poole and Bournemouth, we can be round in a flash to undertake a full Poole boiler service for you – excuse the rhyme 😉!